[meteorite-list] Michael Cottingham's NWA 2690 - a Eucrite or a Howardite?
Hello All! Have you already seen Michael Cottingham's interesting NWA 2690 eucrite on EBay? He is still offering it at a 20% discount. Not only is it an interesting, aesthetically beautiful HED stone but its classification details are also a bit surprising or even somewhat puzzling! Even though it looks like a howardite, it's been classified as a eucrite. So far, so good. At the same time it is supposed to be paired with NWA 1929 which was classified as a howardite !? Michael speaks of an overlapping classification, so, if this classification and this pairing is not a typo, we would have an extremely interesting representative of the HED suite. Anyway, it's a beautiful eucrite-howardite, ... well worth a look! Best wishes and off to bed! Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Monthly Favourite - September 2007
www.meteorites.com.au/favourite/september2007.html This is surely an awesome CV3 chondrite that is full of surprises and I am glad I purchased 6 specimens, 4 of which have these DI's. Of special interest is the DI in Jeff's 1.55-gram complete slice. Like my 4.97-gram specimen, it shows a comminuted matrix of very small, distorted chondrules and mineral fragments and a medium-gray rim that maybe represents shock-melted material. This rim is virtually devoid of chondrules and only shows tiny mineral debris. Jeff, have you already emailed Ted Bunch? Does he have some thoughts on these DI's? BTW, my 11.51-gram NWA 3118 features one of the most massive CAI's (9.5 x 4 mm) I've ever seen in any of my carbonaceous chondrites with the exception of the ones Eric Olsen sold some time ago - NWA 2140 ... unfortunately not classified yet. One of the pieces from Eric has a CAI measuring even 9.5 x 7.5 mm! Another interesting feature of my 11.51-gram slice is that both chondrules + massive CAI show what is called preferred orientation and almost all these chondrules are - just like this CAI - slightly or perceptibly oval. Cheers, Bernd To: [EMAIL PROTECTED] meteorite-list@meteoritecentral.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Rocks From Space Picture of the Day - September 15, 2007
That has to be the coolest NWA 869 that I have ever seen. A fantastic example of the transition zone. Congratulations for discovering it. 869 is full of surprises. http://www.spacerocksinc.com/September_15_2007.html 869 is full of surprises ... I concur! One of my first pieces of NWA 869 (its weight ca. 110 grams) from Dean shows a similar albeit much smaller area (7 x 6 mm) where chondrules and chondrule fragments sit bumper to bumper Best wishes, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Dean's NWA 4755 diogenite
Hello folks, My 18.3-gram specimen of Dean's NWA 4755 diogenite was in the mailbox today and I can tell you it is a beauty! Thank you, Dean! Friday, August 31, I wrote it may be paired with NWA 3143. Now that I can see it in person beside my piece of NWA 3143, I'm pretty sure these two are paired. I also wrote that Dean's picture showed an area where beautiful hypersthene crystals met in triple junction. Now that I have this piece before me, a closer look through the micoscope reveals that this is one huge, green hypersthene crystal measuring 8 mm (!) in widest dimension. It almost looks like it was a Tatahouine inclusion. The Met.Bull. database describes NWA 3143 as having a translucent interior,...something I did not quite understand but my NWA 4755 from Dean clearly shows this phenomenon: when viewing it from a proper angle, you see what looks like a thin matte, silvery coating. BTW, Dean still has some smaller pieces for sale here: http://www.meteoriteshop.com/metsale/diogenite.html Best wishes, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Dean's NWA 4755 diogenite
Hello folks, My 18.3-gram specimen of Dean's NWA 4755 diogenite was in the mailbox today and I can tell you it is a beauty! Thank you, Dean! Friday, August 31, I wrote it may be paired with NWA 3143. Now that I can see it in person beside my piece of NWA 3143, I'm pretty sure these two are paired. I also wrote that Dean's picture showed an area where beautiful hypersthene crystals met in triple junction. Now that I have this piece before me, a closer look through the micoscope reveals that this is one huge, green hypersthene crystal measuring 8 mm (!) in widest dimension. It almost looks like it was a Tatahouine inclusion. The Met.Bull. database describes NWA 3143 as having a translucent interior,...something I did not quite understand but my NWA 4755 from Dean clearly shows this phenomenon: when viewing it from a proper angle, you see what looks like a thin matte, silvery coating. BTW, Dean still has some smaller pieces for sale here: http://www.meteoriteshop.com/metsale/diogenite.html Best wishes, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Dean's NWA 4755 diogenite
Hello folks, My 18.3-gram specimen of Dean's NWA 4755 diogenite was in the mailbox today and I can tell you it is a beauty! Thank you, Dean! Friday, August 31, I wrote it may be paired with NWA 3143. Now that I can see it in person beside my piece of NWA 3143, I'm pretty sure these two are paired. I also wrote that Dean's picture showed an area where beautiful hypersthene crystals met in triple junction. Now that I have this piece before me, a closer look through the micoscope reveals that this is one huge, green hypersthene crystal measuring 8 mm (!) in widest dimension. It almost looks like it was a Tatahouine inclusion. The Met.Bull. database describes NWA 3143 as having a translucent interior,...something I did not quite understand but my NWA 4755 from Dean clearly shows this phenomenon: when viewing it from a proper angle, you see what looks like a thin matte, silvery coating. BTW, Dean still has some smaller pieces for sale here: http://www.meteoriteshop.com/metsale/diogenite.html Best wishes, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Apology: Triple post
Oops, sorry for the triple post but I'm still fighting with my new notebook and its VISTA obstacles and traps :-( Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Michael Cottingham's Barwell auctions
Michael wrote: Over 2 grams of the BARWELL Meteorite Fall From England http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemrd=1item=200147010552 Hello List, I'd like to let you know that Michael has 18 Barwell items on EBay, 17 of them are Buy-It-Now items. Well, e...erh, he had 19 items but when I saw his competitive prices, the best price for Barwell that I have ever seen, I just couldn't, ... yes, you know what's coming now :-)...I just couldn't resist. I'm sure my Barwell thin section will be highly pleased about this new addition to my collection! Best wishes, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Dean's NWA 4755 Diogenite
Dean wrote: Here is my (Recycled but reduced price) Diogenite site: http://www.meteoriteshop.com/metsale/diogenite.html This will all get updated on my website next week but a 20% discount on anything of interest this weekend. Hello List, I presently have 9 different diogenites in my collection (Bilanga, Johnstown, NWA 1459, NWA 2286, NWA 3143, NWA 4302, NWA 4473, Shalka, and, Tatahouine), so I thought I might add a piece of Dean's NWA 4755 diogenite if the price is right. And, with a discount of 20%, I'd say that ca. $17/g is definitely a very good price. It looks like NWA 4755 may be paired with NWA 3143. I paid ca. $50 per gram for my 2.1 grams of that diogenite. What shall I say: I couldn't resist and purchased an 18.3-gram, regmaglypted, partially crusted (glossy, veiny crust!) piece of that NWA beauty! Close to the area where the fusion crust is intact, there is an area where the fusion crust has spalled off, and right there you can see beautiful hypersthene (orthopyroxene) crystals meeting in triple junction (120°). Furthermore, it looks like the two cut interior faces reveal the telltale cracks along a large pyroxene crystal but this may be an optical illusion. Thank you, Dean, for this one! I can hardly wait to welcome and ogle it! Anyone interested in acquiring a beautiful diogenite for their collection at a very fair price, don't miss out on this one. There are still a few very nice pieces at very affordable prices! Diogenitically Yours, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Close Proximity of Meteorite Falls
Maria inquired: Are there others that have fallen together like Saint-Séverin and Ensisheim? Another example, definitely a textbook example, is Wethersfield, Connecticut: Wethersfield (1971) - L6 - Fall, 1971, Apr 08 - Olivine Fa25 Wethersfield (1982) - L6 - Fall, 1982, Nov 08 - Olivine Fa25 Best wishes, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] (Not quite so) close a proximity of Meteorite Falls
Chassigny - SNC - Fall, 1815, Oct 03 (Martian + date!) Zagami - SNC - Fall, 1962, Oct 03 (Martian + date!) Bensour - LL6 - S3; W0 - breccia - fell February 11, 2002, 17:30, Morocco Kilabo - LL6 - S4; W0 - breccia - fell July 21, 2002, July 21, 19:30, Nigeria Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Some help with [Brenham] inclusions
Hello Mike M., Herman and List, Herman kindly wrote: I believe the long schreibersite inclusions are called 'richenbach lamellae', please correct me if I am wrong. I don't think we are looking at so-called Reichenbach Lamellae (= chromite laths surrounded by troilite / chromite = FeCr2O4). Wouldn't Reichenbach Lamellae be much thinner and (almost) straight, ... needle-like? But maybe it's Reichenbach Lamellae and schreibersite simultaneously. This has been observed in the Sychevka IIIAB iron, where troilite is intergrown with schreibersite and chromite within the Reichenbach lamellae of that iron. Best regards, Bernd To: [EMAIL PROTECTED] meteorite-list@meteoritecentral.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] NWA 2635 - Achondrite (ungrouped)
Tuesday, Aug 21, 2007, Michael (Cottingham) wrote: NWA 2635, Achondrite, Ungrouped. I have many pieces both up for auction and in my ebay store at what I think are Great Prices. Starting at $7.00 per gram, for a new Achondrite-Ungrouped! A little while ago this stuff ... was doing $50 to $100 per gram. I got a good deal on the Main Mass so I am passing it on to you! Hello All! I would like to confirm Michael's statement, confirm, ...especially regarding the price per gram he is asking. I bought a 2.41-gram slice from the previous owner(s) of this achondrite when it was still assumed it might be an H7 (!) chondrite and I paid $125 - this is about 52 dollars per gram. In other words, $7 per gram is an extremely generous offer for an extremely interesting achondrite! It's *not* an H chondrite even though it has H chondrite affinities. It's not a brachinite even though it contains about 70% olivine. So, what is it? Go, get one and look at it! Best wishes, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Re-2: Weston - TKW (in collections)
Here's another piece. Third picture down at: http://www.meteorite-times.com/Back_Links/2006/March/Accretion_Desk.htm Hello List, Just in case anyone is pondering over who Dark Matter might be: Of course, that's our very own Martin Horejsi! Martin, good to hear from you. I hope all is well over there! Best wishes, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Some help with [Brenham] inclusions
Mike wrote: a description of which inclusions and colors go with which elements. Hello Mike and List, Here is my take: The round or slightly oval inclusions are troilite (FeS), an iron sulfide - in meteorites the Fe:S ratio is almost ideally 1:1, one iron atom versus one sulphur atom. The elongated, skeletal, inclusion with that golden tint should be schreibersite crystals - chemical formula (Fe, Ni)3P. The silvery lining surrounding the troilite inclusions and also around these elongated schreibersite crystal aggregates is swathing kamacite. That's what meteoriticists call that thin rim that often surrounds troilite, schreibersite and silicate inclusions. This kamacite (nickel-iron with less than 7.5% nickel) is the first to form from taenite (nickel-iron with more than 25% nickel) during the primary cooling phase. Reference: BUCHWALD V.F. (1975) Handbook of Iron Meteorites, Volume 1, pp. 88-89. Best regards, Bernd P.S.: I've really enjoyed your and Ruben's Glorieta Expedition adventures in METEORITE; May 2007, Vol. 13, No. 2, pp. 15-18. Absolutely worth reading ! __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Weston - TKW (in collections)
George wrote: I can account for about 2.5 grams in several pieces. Hello Westoners and Listoners, .. and I can account for 1.11 + 0.34 gr in two partially crusted pieces purchased on EBay from Michael Cottingham! They have the telltale rusty look of the matrix - see also Martin Horejsi's and Mark Bostick's pieces in the Met.Bull. database! Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Nördlinger [Ries] Photos
Fred wrote: I am trying to put a display together on the Nordlinger-Reis crater for the Mineral Show here in Denver next month. I am looking for two photos for the display. One showing the walled town in the impact crater and another of Gene Shoemaker standing by the church made of impact breccia. Hello Fred and List, Correct spelling = Ries not Reis ;-) = Nördlinger Ries = While I can't come up with the desired photo of Gene Shoemaker standing by the church made of suevite (by the way the church has an official name, it's the St. Georgskirche or St. George's Church and its 90-meter high tower was dubbed the Daniel by the people of the town of Nördlingen), I will attach a photo in my private mail to you, a photo that shows E.C.T. Chao, Gene Shoemaker, and R. Dehm in 1983 standing in front of the Nördlingen townhall. The text says that these three celebrities did groundbreaking work and thus solved the Ries mystery. The photo was scanned from this booklet: KAVASCH J. (1985) Meteoritenkrater Ries - Ein geologischer Führer, p.32. KAVASCH J. (1985) Ries Meteorite Crater - A geological Guide, p. 32. Best wishes, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Rusting Gujba!
Ingo wrote: I think that the material is very different and that some pieces are more stable than others! Hello List, Yep, same old story we've been experiencing over the last 10 years. Alex Seidel kept telling collectors to beware of Brenham pallasites as they were rusters. I kept telling our List Community that *my* Brenham has been stable for more than twenty years now! There are probably several factors that influence a specimens's stability, among these not only preparation and preservation but also factors that influenced a meteorite's stability before it was picked up like exposure to weather, wind, rain, natural acids in the ground (just think of tektite grooves), burial depth, moisture, or whether the meteorite comes from deep inside a larger piece where it was protected against degrading effects, etc., etc. Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Perseids tonight
Darryl Pitt wrote: I hope everyone sees a great show tonight. .. and, please, don't forget to remember our late Darryl Futrell when you see one, some, several or a lot of these cometary messengers tonight or tomorrow morning, because August 13, 2001 is the day when Darryl left us behind with our - sometimes so very petty - quarrels and arguments. Maybe you would also like to remember Walter, Rebekah and Walter's wife Sabrina and include them in your well-wishing when you see some of these Perseid meteors streak across your sky. Donations are still welcome and sorely needed! Maria's PayPal address for your donation(s): [EMAIL PROTECTED] Catch a falling star and put in your pocket Save it for a rainy day! Best wishes, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] 22:10 CEDST - My First Perseid!
22:10 hrs Central European Daylight Saving Time I saw my first 2007 Perseid - a bright, thick, orange streak of light streaking N S almost overhead and relatively slow! Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] My second Perseid - 22:30 hrs
Much faster, much fainter, bluish-white and streaking N S below Arcturus! Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] 2007 Perseids
Hello All, After I had seen my first Perseid, I got mail from Alex (Alex I will get back to you tomorrow!) and he was not quite sure if I had really seen a Perseid. Well, it might have been a spoardic meteor but I have just checked back on one of my star charts. That bright, thick, orange streak went right through the keystone of the constellation Hercules, and, tracing back this flight path on my star chart leads me right to the constellation Perseus! In other words, I should have written NE SW instead of N S! Mea culpa! Anyway, what was much more perplexing , was (a) the color of the meteor, (b) its thick streak, and (c) its relatively low speed! Let's wait for the reports of the more experienced observers (Bob Verish, and others) as their observations may throw more competent light on what this year's Perseids are like! Perseidically yours, Bernd P.S: Weather conditions are deteriorating, hazy skies, seeing mediocre, a lot of humidity in the air now :-( __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Lightning, stars and a meteor
http://gallery.gmayfield.com/scenic/lightning_meteor81107 Hello Ginger, Good to know you are still out there! What a beautiful picture that is! Thank you for posting it, thank you for letting us know you are still around! Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Re-2: Walter's Bills and his Ebay Auctions
Anita kindly wrote: I second Bernd's (e)motion! I remember a time not so long ago I wrote to the list that my very first meteorite specimen, Allende, was stolen. I received free specimens and replies from all over the world. We've never met, but you have all touched my heart. It's time, for me at least, to return the favor. Thanks, Bernd for your gentle reminder that we are a great bunch of people with more than rocks in our hearts. Hello Anita and List, Thank you very, very much, Anita! There are now already more than 500 dollars because this gentle reminder fell on fertile ground! Thanks to you, Anita, thanks to all the other gentle people who have not only opened their hearts but also their wallets and their purses to help Walter, Little Rebekah and Sabrina get a bit closer to the bright light at the end of that fateful tunnel. But, I know we can do even better! So, please, let this patch of bright light turn into a flood of brilliant sunlight. Hello, you 850+ members, let's go for it, keep on donating and you will be surprised how good you will feel, how heartening it is to do something good. I know because that's how I felt last night when I read Walter's email to me and his words: Thank you very, very much. Best always, Bernd To: [EMAIL PROTECTED] Meteorite-list@meteoritecentral.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Walter's Bills and his Ebay Auctions
Hello All, .. and I really mean *all* of us! What happened to Walter earlier this year or to Elton a few days ago, is surely the last thing anyone needs. But, these things happen almost daily, unfortunately, ... and the consequences can be excruciating! It usually happens to others, not to us, ... so we think but it may be me or you or her next time. Fate is unpredictable - Walter surely did not expect to become involved in such an accident - nor did Elton! Yes, Maria, my heart is wrenching to see Walter's fine collection pieces go to EBay. They should stay where they belong, ... in Walter's collection! There are about 850 list members. Now, if just every second member decided to donate, say 10 to 20 dollars, a sacrifice that our wallets or purses wouldn't even notice (!), the net donation sum would amount to 4250 / 8500 dollars !!! Just consider how much (literally hundreds and hundreds of bucks!) some of us are prepared to bid on the unique, new eucrite - La Mancha - from Spain, on Mike's Cali chondrite, how much I personally paid for my beautiful, little piece of D'Orbigny that I recently purchased from Marcin, ... Well, considering such sums, it should be an easy sacrifice to help Walter keep his collection pieces, to help his family find the way toward the bright light at the end of the tunnel, because, remember: ** A friend in need is a friend indeed ** And, who knows, one of us might be the next one in need! * 110 * dollars already donated ... not too bad, I'd say. Keep them coming, these donations! 850 list members, ... 850 = eight hundred and fifty, ... and one of us, a long-time respected member of this community needs our help, 850 members who could and should have an open ear and an open heart !!! Now, Ladies and gentlemen, Donate, donate, donate, Let's go for it! Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Donations for Walter
Bernd, what address can I send a donation to? Mark Bernd, Where do I Paypal to? Thanks Nels Hello All! Donations toward helping Walter keep some of his meteorites (and help pay medical bills!) are being accepted via Paypal to Maria Haas's account at: [EMAIL PROTECTED] Snail-mail donations to 410 Spring Street, Saline, MI 48176 (Maria's private address) will work too. My Very Best, Thanks So Much, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Fw: all of recent fall in PA appears to be claimed by owner - Mr EMan
Original Message processed by Tobit InfoCenter Subject: all of recent fall in PA appears to be claimed by owner - Mr EMan (07-Aug-2007 14:45) From:[EMAIL PROTECTED] To: [EMAIL PROTECTED] (and 1 other) Bernd or Geoff, Could you please pass this through to the M-List. Elton sent me a message about his status. Elton believes he has reclaimed everything from his recent fall in Pennsylvania. thanx, John Divelbiss --- Dearest John, I am grateful for your offer but was able to get to my things today and these guys cleaned up everything plus some. The bin my collection was in was intact and unopened, so far as I can tell. It took two large U-Haul trucks to recover all the pieces. When I get back I'll start through the boxes. I have to catch a plane shortly and only have this internet connection for a moment. By way of favor please report for me, to the list, that the strewn field has been totally recovered, that I have been unable to reply to my emails but I will as soon as I can get caught up. Sincerest THanks, Elton __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Lost Meteorites(?) Announcing new Strewn Field in Pennsylvania
Lucky to still be a collector, Elton Happy and pleased to still have you as a collector-colleague and as a List member! Bernd To: [EMAIL PROTECTED] meteorite-list@meteoritecentral.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] No longer off-topic: The ugly weathered [NWA] chondrite
Hello All, Well, let me first of all state that there are no ugly meteorites because ugliness or beauty is in the eye of the beholder. O.R. Norton once called these NWA's ugly ducklings but, as Tom was once again able to prove: Sometimes it is a beautiful prince in disguise ;-) Reference: NORTON O.R. (2001) Ugly Ducklings of the desert (Meteorite Magazine, August 2001, Vol. 7, No. 3, pp. 22-23). Best regards, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] A double Heads-up for this year's Perseids
Hello All, Weather permitting, this year's Perseids (St. Lawrence Tears) will surely be worth watching as the maximum (August 13, 01:00 a.m. EDT or 05:00 hrs UT) will occur around the time when the Moon will be new. Watch out for these celestial messengers, and, maybe our late, astute defender of the lunar theory of tektites, Darryl Futrell, who passed away on Monay, August 13, 2001, will send us his heavenly greetings, on one of them. Best wishes, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Troilite in meteorites ... and in comets?
Hello List, Troilite (FeS) in meteorites, both in irons and in stones, is something we've long grown used to. But FeS in comets? Yes, that's right. If interested in reading about that, go to p. 17 of the September 2007 issue of Sky Telescope (should by now be in your mailbox if you have a subscription). An Italian team led by Marco Fulle (National Institute for Astrophysics, Italy) concludes that a faint arc detected in McNaught's tail is most likely iron atoms coming from fluffy bits of troilite (FeS). And, interestingly, this is not the first time that troilite has been found in a comet. Grains of this mineral have also been found in the samples returned by Stardust from the coma of Comet Wild 2! Troilitically Yours, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Spherulitic texture in meteorites
Hello Jeff P. and List, http://www.spacerocksinc.com/July_27_2007.html Jeff wrote: That's an unusual texture, I think the geologists call it spherulitic - indicative of rapid cooling. Here's an example of a similar texture in Apollo rock 60017: http://ser.sese.asu.edu/cgi-bin/DPSC_Data.pl?search=1rock=60017piece=; size=slide=coments= Anyone recall seeing another meteorite with that texture? The following meteorites are described as having similar textures: NWA 1000, a highly shocked eucrite: subophitic and slightly variolitic (fan-spherulitic) texture with laths of plagioclase (up to 4 mm long) and pyroxene (up to 5 mm). NWA 1240, an anomalous, unbrecciated eucrite: achondrite consisting of skeletal low-Ca pyroxene phenocrysts in a variolitic (fan-spherulitic) mesostasis of pyroxenes, plagioclase,...The rock resembles some Apollo 15 pigeonite basalts but mineral and bulk rock compositions indicate a relationship to eucrites. Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] NWA 4677 - Fred's New Anomalous Eucrite
Hello Eucrite Lovers and List, http://meteoriteshow.free.fr/meteoriteshow%20fra/pages%20navigation/pieces_en_vente-fra.htm http://meteoriteshow.free.fr/meteoriteshow%20angl/pages%20meteorites/NWA4677-classif.pdf Well, most slices of Fred's anomalous eucrite have been sold! I wonder if anyone of those collectors who bought this material from Fred (I am one of them - I purchased slices #008 and #014) thinks it is not only similar to Dhofar 007 (as will be reported in a future issue of the Met.Bull.) but that it *is* Dhofar 007. I don't think so because the matrix of NWA 4677 seems to be a different color and the plagioclase patches are huge (relatively speaking) especially in slice #14 (that's what prompted me to buy it!). Furthermore, there are those large clasts of comminuted material in Fred's anomalous eucrite - they are very prominent in most slices and I don't remember seeing them this distinctly in Dhofar 007. Best wishes, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Kamacite-Plessite Spindles
Hello Steve and List, What the hell are KAMASITE PLESSITE SPINDLES? Northwest Africa 0859 (AKA = Taza) is such an iron! Etched slices of the Taza plessitic octahedrite show such characteristic needles ... if that is what this dealer/seller is referring to! Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Baszkówka- Was: Cali chondrit e fell extremely cold!
Marcin wrote: I have information that Baszkowka was hot when it was found. See also: PILSKI A.S. et WALTON W. (1998) Baszkowka, Mt. Tazerzait, and Tjerebon - Chips off the same block? (Meteorite!, Vol. 4-1, 1998, pp. 12-15, p. 12): ... and at a depth of 25 cm he found something hard and *warm* But, we should keep in mind that this happened in mid-summer, on August 25, 1994, at 15:50 hrs (local time). The hot afternoon summer sun and, consequently, the hot soil will have played a crucial role! Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Re-2: Cali meteorite fall trajectory and offset ofdamage.
Chris wrote: The material evidence of the fall does suggest that the components still carried some of their original velocity, but I can't see any mechanism by which such small stones could retain that over 30 km of low altitude travel. Mike wrote: From all accounts, the body entering the atmosphere must have been very large indeed to cause explosions loud enough to shatter windows. Let's now combine both comments, which could mean that the Cali meteoroid: 1. still carried some of its original (cosmic) velocity 2. must have been very large, in other words, 3. the meteoroid's mass may have stayed intact down to a very low altitude 4. *exploded*, in the literal sense of the word, at a very low altitude 5. did not fall in free flight but was accelerated by its explosive energy .. and finally, that the Cali meteorite: 6. should be the very opposite of a friable meteorite: very solid, very coherent Best wishes, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Attempted robbery, I am coming home
Mike, Please come home safely and quickly for goodness sake!!! There are few things worth your life in this world other than family and friends! Forget meteorites, you and Robert get your butts home fast, safe, and sound PRONTO SUBITO!!! Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] (HA) = Humor Alert: Smallest Possible Earth Impact Crater?
.. with a strength beyond the *mere* weight of the material. OK, ... now I see why this structure is called Mere-wether ;-) Sorry, but I couldn't resist :-( Best wishes, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Fourth of July and Colby (Wisconsin)
I would like to wish all of our American list members happy, safe and peaceful Independence Day celebrations with the Colby (Wisconsin) L6 (S3; veined) chondrite. Two stones fell 1917, July 4th, 18:20 hrs after the appearance of a luminous meteor with a trail of black smoke, moving from NW. to SE., and detonations. Off-topic: Such a day brings back memories from my early childhood days here in post-war Germany. Chocoloate or chewing gum were something that we could only dream of. My mother's sister was going for a walk with me and when we were walking past the American military prison here in Mannheim, my hometown, there was a friendly smile from an American prison guard up on his watchtower and down came a bar of Cadbury chocolate and Wrigley's chewing gum. I will never forget these shining teeth (the sentinel was a black American!) and that friendly smile on his face and I think he is one of those to be blamed :-) for my life-long sympathy for everything American. Best Fourth of July wishes from Germany, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Re-2: Catalog of the recovered Bassikounou masses released
An astonishing, excellent piece of work! Thanks a bunch, Svend and Matthias, for a job very well done, Alex - Berlin/Germany Agreed! Ja, das stimmt! D'accord! D'accordo! Maybe this texbook example will help motivate every potential NWA finders in the future to document their falls/finds as painstakingly and as thoroughly as Matthias and Svend did! This would be of tremendous scientific value and would probably make many a scientist think twice before they say, think or write something like: Non-scientists and/or collectors are incapable of properly dealing with a meteorite fall/find. Best wishes, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] EBAY Slag for sale + grinded (slightly OT)
Mark M. wondered: Grinded? What the hell is grinded? Would that not be ground? to grind - ground or (Rare) = grinded Well, and if you want to know where I finded :-)) this piece of information: RANDOM HOUSE WEBSTER'S UNABRIDGED DICTIONARY Cheers, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Martin Horejsi
Hi List, Does anyone have any (hopefully good) news about or from Martin Horejsi ??? Best wishes, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Interesting Cohenite feature
Martin wrote: I found a very useful and ineresting picture in one of Marcin's auctions. http://cgi.ebay.de/ws/eBayISAPI.dll?ViewItemitem=110143358121 Note the left lower side of the etched surface. It's full of cohen- ite worms and note how limited the cohenite is to only this area. Hello Listees and Listoids, Cohenite = [(Fe,Ni,Co)3C] Buchwald writes about Morasko: Cohenite is common in some sections, absent in others ... Over an area of 4 x 3 cm^2, a total of 45 cohenite crystals, each typically 3 x 0.6 mm in size, was observed. They formed rounded bodies with reentrant angles and with 50-300 µ inclusions of kamacite, taenite and schreibersite. Buchwald about cohenite: Buchwald V.F. (1975) Handbook of Iron Meteorites, Vol. 1, Cohenite (p. 100): - cohenite is brilliant w h i t e - it is very hard, significantly harder than schreibersite - characteristic of group I irons (also occurs in other irons) Reference: BUCHWALD V.F. (1975) Handbook of Iron Meteorites, Vol. 3, pp. 836-838. Best wishes, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Zaklodzie in Ensisheim
Marcin wrote: In Ensisheim I have seen that some dealers sells polish meteorite Zaklodzie as Primitive Aubrite. I want to say that Zaklodzie is nothing less and nothing more than Ungrouped Primitive Enstatite-rich Achondrite. Mr Grossman confirmed that and say that sugestion for aubritic classification was a mistake in the past. Zaklodzie is one of only 3 enstatite achondrites. and, while we are at it: PATZER A. et al. (2002) Itqiy: A study of noble gases and oxygen isotopes including its terrestrial age and a comparison with Zaklodzie (MAPS 37-6, 2002, pp. 823-833): In addition, a comparison of the noble gas records, oxygen isotopic data, and terrestrial ages of Itqiy and Zaklodzie is reported. Zaklodzie is another ungrouped, anomalous enstatite meteorite, which was recently found in Poland (Stepniewski et al., 2000; see also Burbine et al., 2000). Similar to Itqiy, it is composed mainly of euhedral and subhedral enstatite, but unlike ltqiy, interstices are filled with plagioclase acting as a groundmass. Additional accessory phases of Zaklodzie are kamacite and troilite. Schreibersite was also identified. In general, the chemical composition and mineralogy of Zaklodzie display parallels to EL chondrites whereas its texture can be described as either highly metamorphosed or achondritic. Patzer et al. (2001b) concluded that owing to petrologic-chemical reasons both meteorites neither represent the same material nor that Itqiy was derived from Zaklodzie-like matter. This conclusion is here reviewed in the light of noble gases and oxygen isotope data. Best wishes, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Ensisheim 2007 photos and Saint-E xupéry's Little Prince
To whom it concerns ;-) I would like to thank all of you very much for those enthralling Ensisheim 2007 pictures. Surely, the next best thing to being there: the photographic impressions documented by Beata, Marek Wozniak Jan Woreczko! I do love the painting of the Little Prince (Le Petit Prince) by Antoine de Saint- Exupéry standing on his home asteroid B612. But let the author speak himself: I have serious reason to believe that the planet from which the little prince came is the asteroid known as B-612. This asteroid has only once been seen through the telescope. That was by a Turkish astronomer, in 1909. On making his discovery, the astronomer had presented it to the International Astronomical Congress, in a great demonstration. But he was in Turkish costume, and so nobody would believe what he said. Grown-ups are like that ... Fortunately, however, for the reputation of Asteroid B-612, a Turkish dictator made a law that his subjects, under pain of death, should change to European costume. So in 1920 the astronomer gave his demonstration all over again, dressed with impressive style and elegance. And this time everybody accepted his report. If I have told you these details about the asteroid, and made a note of its number for you, it is on account of the grown-ups and their ways. When you tell them that you have made a new friend, they never ask you any questions about essential matters. They never say to you, What does his voice sound like? What games does he love best? Does he collect butterflies? Instead, they demand: How old is he? How many brothers has he? How much does he weigh? How much money does his father make? Only from these figures do they think they have learned anything about him. If you were to say to the grown-ups: I saw a beautiful house made of rosy brick, with geraniums in the windows and doves on the roof, they would not be able to get any idea of that house at all. You would have to say to them: I saw a house that cost $ 20,000. Then they would exclaim: Oh, what a pretty house that is! Just so, you might say to them: The proof that the little prince existed is that he was charming, that he laughed, and that he was looking for a sheep. If anybody wants a sheep, that is a proof that he exists. And what good would it do to tell them that? They would shrug their shoulders, and treat you like a child. But if you said to them: The planet he came from is Asteroid B-612, then they would be convinced, and leave you in peace with their questions. They are like that. One must not hold it against them. Children should always show great forbearance toward grown-up people. But certainly, for us who understand life, figures are a matter of indifference. I should have liked to begin this story in the fashion of the fairy-tales. I should have liked to say: Once upon a time there was a little prince who lived on a planet that was scarcely any bigger than himself, and who had need of a sheep... Best regards, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] More on Etching Estherville
Mike wrote (in a private mail): The finer grains: ... Many are complete rice shaped grains and in the order of 1 to 2 mm wide. Any insights as to what these finer grains represent? Hello Mike (and List), Thank you for the attached image of your remarkable Estherville slice. As for the finer grains, they might represent grains of tetrataenite (nickel-iron with an extremely high nickel content of up to 60%) or maybe grains of cloudy taenite with a rim of tetrataenite. HUTCHISON R. (2004) Meteorites: A Petrologic, Chemical, and Isotopic Synthesis (Cambridge Planetary Science Series) p. 353: Taenite and tetrataenite are present in the interiors of [mesosiderite] metal grains. Cheers, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Etching Estherville - Addendum
Pinnaroo is another mesosiderite whose metal shows Widmanstätten structure as it also has a relatively high nickel content of 9.66% Cheers, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Etching Estherville
Hello Mike and List! I just obtained a nice slice with a bleb about 20mm in diameter and we etched this and a faint pattern is seen. Is it possible that this is a Widmanstätten pattern? See NORTON O.R. (2002) The Cambridge Encyclopedia of Meteorites (Cambridge University Press, p. 158): Remarkably some of the larger metal nodules when polished and etched show Widmanstätten structure typical of octahedrites. O.R. Norton also mentions a nickel content of between 7 and 10%, [which] is the nickel content of octahedrite meteorites. So no need to be surprised as Estherville has a nickel content of 9.0%. I am not sure if the metal melted and cooled properly to allow the kamacite and taenite to separate McSWEEN H.Y. (1999) Meteorites and Their Parent Planets (Cambridge University Press, Glossary, p. 212): The resulting mixture was buried deeply, so that slow cooling produced a Widmanstätten pattern in the metal. The cooling rates for mesosiderites .. are exceptionally slow, less than half a degree per million years. Best Estherville wishes, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Great Bear Lake
Hello Howard, Steve and List, All current information about Great Bear Lake can be found on page 222 of the Catalogue of Meteorites. Very interesting. Here is what I've found in my database but I don't know who this info comes from - maybe from Mark Bostick but I'm not sure: Paper: La Porte City Progress Location: La Porte City, IA Date: Thursday, August 26 1937 Meteorite on Ice Served to Smithsonian Institution Washington. - A stone from the sky, found on the ice near Great Bear Lake in northern Canada, has been added to the Smithsonian institution collection of meteorites. An Indian picked it up, wondering at its peculiar form and the fact that it was lying there on top of the ice, and brought it to the nearest mission. The meteorite is about the size of a walnut, and aside from the peculiar circumstances of its discovery is not remarkable. It is thought to be a fragment of a much larger celestial projectile now probably at the bottom of the water. Search for the parent body will be made next summer. A second meteorite recently received by the Smithsonian institution is the only one of its kind known to exist. It consists of the mineral known as Chladnite, in a form different from that recorded for any previously known meteorite. Regards, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] cleveland, ga
Hi AL, Harlan and List, There is a Cleveland, Tennessee, medium octahedrite ... .. AKA the Whitfield Iron (= Whitfield County) Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Hello Patrick, or ...
.. had I better say Mr. Pallasite?! ;-) Welcome to the List and bye-bye to your status as a lurker. It was delightful to visit your revamped website and anyone who is seriously and passionately into meteorites, can literally feel your enthusiasm while looking at your pics. Your website, and, the illustrious crowd you have assembled there (Bob Haag, Roman, Mike T., Mike F., McCartney, our own Stefan Ralew... just to name a few), are ample proof you got the meteorite bug ... a contagious disease as we all know ;-)) If I were you, I wouldn't take pictures of our beloved meteorites at an oblique angle because too many beautiful details just don't show. One example, your DHO 1180 (Lunar) probably of M.F. provenance - the oblique view doesn't do that lunar beauty justice. I, personally, would also prefer a millimeter (or centimeter) scale instead of a pencil to give people an idea how big my slice of XYZ is. One last comment - I hope you don't mind - subjective comments like nice crust have no scientific (and no real personal) value. *You* know the crust is nice, others, if they know anything about meteorites and their crusts, will instantly see how nice the crust is. Example: Your beautiful and impressive Holbrook specimen; it has a very nice shape, it is museum quality! Those in the know know, others wouldn't care because they do not see the inherent beauty of these celestial treasures! Best wishes from Germany, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Lunar Anorth(os)ites
Hi Dan, Mike J., Lunatic Norbert ;-), and List, Dan, welcome to the List, to the Listees, the Listoids, etc. Norbert already clued us in, Randy, the expert, may chime in soon, so here are some references that obviously prove both varieties do exist: 1. Anorthosite: (= granular plutonic rock composed largely of labradorite or a more calcic feldspar) HAWKE B.R. et al. (1995) Remote sensing studies of anorthosite deposits on the Moon (abs. Meteoritics 30, 518). PETERSON C.A. et al. (1997) Spacecraft and groundbased identification of lunar anorthosite (Meteoritics 32-4, 1997, A106). SHERVAIS J. et al. (1997) Petrogenesis of alkali-suite anorthosites and norites in the Western lunar highlands: Flotation cumulates from pristine KREEP, magma mixing and assimilation of older anorthosite (Meteoritics 32-4, 1997, A119). A.S.M. Arribas (1994) Some Remarks on Terrestrial and Lunar Anorthosite Textures and their Petrogenetic Significance (Meteoritics 29-4, 1994, A528). NORMAN M.D. et al. (2003) Chronology, geochemistry, and petrology of a ferroan noritic anorthosite clast from Descartes breccia 67215: Clues to the age, origin, structure, and impact history of the lunar crust (MAPS 38-4, 2003, pp. 645-661). 2. Anorthite: BORG L. et al. (1997) A relatively young samarium-neodymium age of 4.36 Ga for ferroan anorthite 62236 (Meteoritics 32-4, 1997, A018). BISCHOFF A. et al. (1997) Dar al Gani 262: The first lunar meteorite from the Sahara (Meteoritics 32, 1997, A013): Plagioclase in the bulk rock is anorthite (mostly An95). BUKOVANSKA M. et al. (1999) Dar al Gani 400: Petrology and geochemistry of some major lithologies (MAPS 34-4, 1999, A021): Two hornfelsic (granulitic) textures are present: (1) anorthite laths with interstitial olivine and pyroxene, no metals and troilite; and (2) pyroxene more frequent than olivine between anorthite laths. Best regards, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Allende - Rosetta Stone
Fred Olsen writes: I recall but can't give the exact source that the Allende meteorite was described as the Rosetta stone for the solar system. This was maybe twenty or more years ago. Allende my first and still favorite meteorite! Hi Fred and List, B. Mason (1975) The Allende meteorite - Cosmochemistry's R o s e t t a S t o n e ? (Accts. Chem.Res. 8, 217-224). Best wishes, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] More Rosetta References
MUMMA M.J. et al. (1993) Comets and the origin of the solar system - Reading the Rosetta Stone (In Protostars and Planets III, eds. E.H. Levy, J.I. Lunine, pp. 1177-1252, Univ. Arizona Press, Tucson, Arizona, USA). D.W.G. SEARS (1996) Is Kaidun really the Rosetta stone? (Meteoritics 31-5, 1996, 543). Best wishes, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Chondrule Bleaching in NWA 4781 (CH3)?
Hello John, Marcin, David and List, John wrote: I snapped a few pictures to show this meteorite's texture and variety. http://www.johnkashuba.com/Pages/Meteorite%20Pages/Pictures/NWA4781CH3.htm Thank you, John, for these wonderful snapshots! John also wrote: This IS a fun rock. -- It surely is! John then also wrote: small perfect chondrules -- Yep, most of them ca. 0.1 mm And furthermore: ... a little bleaching on a couple RP/C chondrules? Roll of drums: This afternoon, I took a picture at 56x and detected what might be interpreted as an incipient stage of chondrule bleaching in several of the RP (= radiating pyroxene) chondrules of my polished endcut. I did not find any C (= cryptocrystalline) chondrules with signs of bleaching though. For the list: Chondrule bleaching is the result of leaching by water having percolated through the matrix of this meteorite (such chondrules are better known as bull's eye chondrules) and is thus indicative of aqueous activity on this meteorite's parent body (or bodies). Best CH3 regards, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Marcin's CH3 chondrite
Hello List, I would like to direct your attention to Marcin's latest acquisition: NWA 4781, a rare and unique addition to the exotic group of CH chondrites (see David Weir's excellent website for more information on the CH-clan!). The NWA number is still provisional but will soon be official. This unique chondrite has been classified by two (!) different labs and both David and I had the pleasure to study pictures of this significant Hot Desert find before it was offered to the collecting community. Right now there are only six CH chondrites worldwide: Açfer 182 / 207 / 214 / 366 - Allan Hills 85085 and: NWA 4781 .. so I think that Marcin's $/gram price for such an ultrarare meteorite is more than very attractive: http://www.polandmet.com/_nwa4781.htm I've taken pictures of my 1.184-gram endcut (magnification:16x and 32x) just in case any potential buyers are interested in seeing its tiny chondrules (average mean diameter ca. 0.1 mm) up close. Best wishes from the proud owner of 1 + 1.184 grams of NWA 4781. Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Marcin's CH3 chondrite: Total number
Hello List, I just got mail from David that I should correct my statement that there are only 6 CH chondrites. The MetBull database says there are 19, even though many of them are paired. David has the total number at 13 but he also says that he could be off a couple either way. It is really high time I resume updating my databases ... something I haven't been able to do for several years now :-( Anyway, few people will be lucky enough to own a CH3 chondrite so do not miss out on this one. Best wishes, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Shergotty a eucrite ... not: Then and Now
Hello List, We all know that the acronym SNC stands for the three typical samples of the group: Shergotty, Nakhla, and Chassigny. But 135 years ago, G. Tschermak was still unaware of the exotic nature of these meteorites and grouped them with the eucrites. In 1872, he wrote: Shergotty, which I described several years ago, should also be included with the eucrites. It is a conspicuously granular rock consisting essentially of dull yellow-gray grains and prisms, which were found to be augite, and water-clear glassy grains and laths. The latter resemble no known mineral; I named this material maskelynite. The SNC's must have come from a different parent body - different from Earth, from our Moon, and from the parent body or bodies of the HED suite. This is reflected in the displacement of their oxygen isotopes when plotted in a diagram (see O.R. Norton's Encyclopedia of Meteorites, p. 157, Fig. 8,15). Another telling feature of the SNC group is their young crystallization ages - in other words they must have come from a celestial neighbor where volcanic activity was an ongoing process not too long ago. According to Susanne Schwenzer et al., the following observations are considered highly indicative of a Martian origin of the SNC meteorites: 1. SNC meteorites belong to one group, as proven by many chemical and isotopic investigations, pointing to a common parent body. 2. All SNC meteorites are differentiated magmatic rocks, with some of them showing volcanic textures. 3. The young crystallization ages of 1.3 Gyr, requiring a parent body that still shows igneous activity at such a late time in solar system history. 4. Direct evidence from Viking 1, when the concentrations and compositions of noble gases in the Martian atmosphere were measured and compared to those found in SNC meteorites in our collections. 5. The rovers Spirit and Opportunity found rocks on Mars with chemical signatures identical to those of some of the Martian meteorites in our collections (Bounce Rock, for example, has geochemical characteristics, such as the Fe/Mg ratio, consistent with that of shergottites). Reference: Schwenzer S. et al. (2007) Noble gases in mineral separates from three shergottites: Shergotty, Zagami, and EETA79001 (MAPS 42-3, pp. 387-412, Introduction). Best wishes, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] TAFASSASSET? Ay new info?
Hi Mike, Jason, and List, Apart from all the close matches and plots, I can definitely say that my Tafassasset thin section (that I purchased from Mr. Alain Weissler at the Ensisheim Show in 2004) does *not* look like a CR chondrite but rather like a primitive achondrite in cross-polarized light. Most olivine- and pyroxene crystals are *very* small - smaller even than the fine-grained texture of an acapulcoite but there are also some rather large pyroxenes (ca. 10-15 times the size of the average crystal size!) floating amid the surrounding sea of crystals. I will attach a picture of my Tafassasset TS in cross-polarized light in my private mail to Mike. Tafassasset TS (magnification = 32x) / Exposure: 1/6 Aperture: 2.8 / ISO 100 / Resolution: 2560 x 1920 Cheers, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Mbale
Hi AL, Martin and all, There was a good article about the fall in S T with good photos. Best regards, Bernd Sky Telescope, June 1983, pp. 96-97 Amateur Astronomers, Edited by Stephen James O'Meara On August 14, 1992, a daytime shower of stony meteorites rained down on Mbale, Uganda, and its surroundings. Clockwise from left: These Ugandan soldiers collected two fragments with weights of 6.2 and 3.0 kilograms, respectively. Three men from the tiny village of Malukhu found a 10.8-kg fragment that made an 85-cm-deep hole when it hit. A sample of meteorites recovered from the Mbale fall and outlying regions; the total weight of these fragments exceeds 40 kg. All photographs, unless credited otherwise, are by Jan L. Betlem, Mount Elgon Conservation and Development Project. The Day That Rained Stones On the afternoon of August 14, 1992, citizens of Mbale, Uganda, witnessed a large explosion in the sky, out of which emerged a shower of flaming meteorites. For minutes the fragments rumbled as they blazed smoky trails across the heavens. Villagers farther north thought they were being bombed by rebels, since conflicts were occurring only a few tens of kilometers away - in the direction from which the objects came! Adding to the confusion, the explosion produced a sonic boom that sounded like machine-gun fire. Minutes later stones showered the Earth. The next day Jan L. Betlem of the Mount Elgon Conservation and Development Project in Mbale informed the Dutch Meteor Society of the fall. On August 25th I arrived in Africa with fellow meteor-society members to interview eyewitnesses and study impact sites. Already the police had inherited a fine collection of fragments, one of which weighed about a kilogram. For a week we carried out fieldwork with geologists Thomas Schlüter and Erasmus Barifaijo (Makarere University of Kampala, Uganda) and local authorities. Police also assisted, leading us to several buildings hit by meteorites in Mbale's industrial area. During our inspection we also found several other impact sites. To date we know of about 50 impacts. Two major ones took place in the swamps south of a prison. In fact, four fragments fell near or hit the prison itself. The largest, weighing at least 10 kg, landed only one meter from a building near the prison and made a depression 80 centimeters deep. Two meteorites smashed into a railway station; one broke through its roof and shattered on the concrete floor. Another impact occurred at a Shell Oil Co. storage facility. The stone, weighing a few kilograms, fell atop an underground fuel tank; fortunately it produced a hole only a few tens of centimeters deep. Another major fragment weighing about 5 kg pierced the roof of a cotton factory, hit a machine, and shattered into several piece. Impacts were also reported at a coffee factory and a sewage works northwest of Mbale. Smaller fragments were found in Doko, about 5 km northwest of Mbale, where we recovered many stones weighing a few grams. As far as we know, no one was injured during the falls - incredible considering the dozens of meteorites that must have rained down on that densely populated area. A 4-gram fragment did hit a boy from Doko on the head, but he was not hurt. The meteorites speak About 300 kg of meteorites fell on Mbale and its environs. Although we probably recovered all of the major fragments, many of the smaller stones might still lie at the bottom of the extensive swamps surrounding the city; these might never be recovered. The weight of the collected fragments ranged from 0.1 gram to several tens of kilograms. The Mbale meteorites are now being studied in the Netherlands. Initial research by C.E.S. Arps, director of mineralogy at the National Museum of Natural History in Leiden, indicates that they are L6 type chondrites - stony objects low in iron with microscopic flecks of magnesium-iron silicates. Larger fragments show thin, annealed fractures, implying that the final breakup took place high in the sky. In fact, nearly all of the 300 recovered fragments have a black fusion crust. Eyewitness accounts of the explosion are sketchy, mainly because it occurred high in the sky near the Sun. We believe that the final breakup occurred about 10 km north of the major impact sites we inspected. The fireball's flight angle and duration, however, are still very uncertain. By weighing the fragments and studying the impact sites further we hope to learn more about the parent body's course. HANS BETLEM, Dutch Meteor Society, Lederkarper 4, 2318 NB Leiden, The Netherlands __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] High-titanium magma on the Moon
Randy wrote: Earth-based spectroscopy of the near side as well as whole-moon spectroscopy by the Clementine mission show that high-Ti basalts are really not so common on the Moon. Hello All, One such lunar high-titanium area was visited by the Apollo 17 astronauts in the Taurus Littrow Valley (Mare Serenitatis) where the astronauts took a core sample in an orange patch of soil on the rim of the 120 m diameter impact crater Shorty. The core sample is unique because it is composed completely of volcanic beads with only a minor lithic component in the top 8 cm. The volcanic beads consist of high-Ti orange glasses (9 wt% TiO2) and their crystallized equivalents (black beads). Reference: WEITZ C.M. et al. (1999) Ascent and eruption of a lunar high-titanium magma as inferred from the petrology of the 74001/2 drill core (MAPS 34-4, 1999, pp. 527-540). Best wishes, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Carsten's NWA 4679 and Marcin's MC036 CK chondrites
Marcin wrote: ... a big, pretty, complete, yelow, radiant chondrule...I must say that THIS one should not be here. This chondrule just not fit to this CK matrix. This kind of chondrule I can expect in L3 or H3 but in CK? Hello Marcin and List, These words remind me of what I wrote last March 04 about Carsten's NWA 4679 (CK4) - paired with Philippe Thomas's NWA 4425 - C3.8. If your MC036 chondrite happens to be paired with the other two CK's, my comment re: NWA 4679 might once again be of interest. Here it is: As such macrochondrules have not been observed in CK chondrites, I wonder where this huge 12-mm BO chondrule comes from. Maybe from the meteorite that collided with the CK parent body of NWA 4679? If so, was it an H, an L, or an LL chondrite? The sheer size of this macrochondrule speaks in favor of an L chondrite. Here is the URL for those who haven't seen this megachondrule yet: http://www.gi-po.de/ebayfolder/shop/carbopre/carbo.htm Best regards, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Kalahari 008 and weathering
Randy Korotev kindly wrote: ... but most brecciated lunar meteorites do contain grains of metal Hello Randy and List, Just a few examples: 1. DaG 262 contains metal particles (5-26 wt% Ni) 2. Lunar Soil 68501 contains metal* 3. DaG 400 contains metal that occurs in clusters associated with some troilite 4. DaG 996 contains FeNi 5. Dhofar 025 contains FeNi as an accessory mineral 6. Dhofar 301 contains FeNi metal (7-48 wt%Ni) 7. Sayh al Uhaymir 169 contains metallic iron *BECKER R.H. et al. (1994) Solar Wind Noble Gases and Nitrogen in Metal from Lunar Soil 68501 (Meteoritics 29-5, 1994, 724): The clean metal consisted primarily of more or less shiny spherical grains, which are presumed to be droplets formed from impact-produced melt ... Best wishes, Bernd To: [EMAIL PROTECTED] meteorite-list@meteoritecentral.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Angrite NWA 4590 auctions have ended now, ...
.. and I am glad I did not jump on the lower opening price so that the piece that was my perfect size has not been lost to another bidder! I received mine (1.024 grams) today. It sports patches of shiny, glossy fusion crust today and it is a pleasure to hold and a feast for the eyes to behold! Will have to wait for the weekend before I find some time to read the Lunar and Planetary abstract on NWA 4590 and look at this little gem under my stereo microscope. Wish I had a thin section of this gorgeous plutonic angrite. The mottled appearance of the NWA 4590 crystals in cross-polarized light resembles that of the NWA 3151 brachinite but the crystals are substantially larger in this *plutonic* angrite and there is much more plagioclase (almost pure anorthite): http://www.lunarrock.com/nwa4590/nwa4590xpl.jpg Best wishes, Angritically, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Happy Easter Everyone and Everywhere! ... RMR
*RMR = Remotely Meteorite-Related ;-) The Daffodils (by William Wordsworth) Composed 1804 - Published 1807 I wandered lonely as a cloud That floats on high o'er vales and hills, When all at once I saw a crowd, A host, of golden daffodils, Beside the lake, beneath the trees, Fluttering and dancing in the breeze. Continuous as the stars that shine* = RMR And twinkle on the milky way,* = RMR They stretched in never-ending line Along the margin of a bay: Ten thousand saw I at a glance, Tossing their heads in sprightly dance. The waves beside them danced; but they Out-did the sparkling waves in glee: A poet could not but be gay, In such a jocund company: I gazed - and gazed - but little thought What wealth the show to me had brought: For oft, when on my couch I lie In vacant or in pensive mood, They flash upon that inward eye Which is the bliss of solitude; And then my heart with pleasure fills, And dances with the daffodils. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Marcin's (a)chondrite
Marcin wrote: - I received from Morocco small eucrite. - dont really look like normal eucrite or amphoterite. - eucrite/howardite? - I not see any chondrules - even for LL chondrite this one have very little amount of iron - I cant see any troilite - strong feeling that this is not eucrite. http://www.meteoryt.net/ebay/MC032a.jpg http://www.meteoryt.net/ebay/MC032b.jpg http://www.meteoryt.net/ebay/MC032c.jpg http://www.meteoryt.net/ebay/MC032d.jpg http://www.meteoryt.net/ebay/MC032e.jpg Mike responded: - a very highly shocked LL6 - could also be a shocked Diogenite. - the veins similar to what I have seen in Diogenites - it looks to have a little more metal than I would expect. Hello Marcin, Mike, and List, No need to feel ashamed. There are several such unclassified specimens in my collection that have hitherto defied classification. One such stone (it also has these angular clasts that may be orthopyroxenes and it also has this bluish-gray texture) comes from the Hupés. It is cut in two halves, was part of the cherry-picked series and was sold as a possible achondrite. It too has a little more metal than one would expect in a eucrite or a howardite. I also purchased similar-looking stones from Dean and, again, I am still not quite sure if I am looking at LL6 or something achondritic (eucrite or howardite). First off your meteorite looks similar to Saint-Séverin and Ensisheim, which would make it an LL6 as Mike already stated but those angular clasts - if they are really orthopyroxenes - could also shuffle your stone into the howardite or diogenite group, both of which contain orthopyroxenes. I can't detect any plagioclase needles as would be the case for a typical eucrite but that may be a consequence of severe shock melting - again a detail Mike already mentioned. Best wishes, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] New Iron Contest
Anne's guess: Anomalous Ungrouped Iron Ingo's guess: IIICD iron Bernd's guess: Silicate-bearing IIE-ungrouped; artificially reheated Best wishes, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] NWA 1584 (LL5) and NWA 2826 (LL5)
Hello again, I just compared the Fa and Fs values - these are too far apart to make it likely that these two Hot Desert meteorites are paired: NWA 1584: Fa28.3; Fs25.2 NWA 2826: Fa22.8; Fs22.1 Best wishes, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Needle in a Haystack (again) - more photos
Mike B. wrote: Just received this world class meteorite from Svend. We've already seen pics, but (for those who care) I took some more including close-ups under natural light. It looks even more stunning in hand: http://img.villagephotos.com/p/2004-11/877141/haystack1.jpg http://img.villagephotos.com/p/2004-11/877141/haystack2.jpg http://img.villagephotos.com/p/2004-11/877141/haystack3.jpg http://img.villagephotos.com/p/2004-11/877141/haystack4.jpg http://img.villagephotos.com/p/2004-11/877141/haystack5.jpg So beautiful, so very, very beautiful! I like haystack4 in particular because of this neat contrast between the silvery FeNi enveloping those puzzle-like, golden troilite patches. Mike B. also inquired: Has anyone seen another example of a large shrapnel inclusion like this in a Chondrite? Well, not exactly shrapnel but similar-looking aggregates in my: 1. 40.5-gram slice: Slovak (H5; S3) - FeNi-troilite aggregate is 14 mm in longest dimension 2. 8.79-gram slice: Tanezrouft 080 [L(LL)5; S2; W2)] - 10 mm FeNi-troilite aggregate 3. 23.5-gram slice: NWA 4019 (AEUC; br;pm) - 10 mm triple FeNi-troilite aggregate Will send you pics in a private mail! Congrats + best wishes, Bernd To: [EMAIL PROTECTED] Meteorite-list@meteoritecentral.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Cool California Find
Jason wrote: Usually I don't post find images, but I thought this one from the day before yesterday was pretty cool. http://i50.photobucket.com/albums/f306/JUtas/DSCN2320.jpg http://i50.photobucket.com/albums/f306/JUtas/DSCN2315.jpg Congratulations! A beautiful, fully crusted, fresh-looking stone! What do you think it is? H5 or H6 maybe? Nothing to base my assumption on, ... only a feeling! Regards, Bernd To: [EMAIL PROTECTED] meteorite-list@meteoritecentral.com [EMAIL PROTECTED] __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Cosby's Creek, Tennessee
Hi Robin and List, Here is some interesting info from the Vagn Buchwald trilogy. Happy reading and enjoy! For me, if I were you, the most interesting comment by Buchwald would be this one: It probably burst in the atmosphere and produced a limited shower centered around Cosby's Creek So, maybe there is still something out there waiting for you to go for it! Best wishes, Bernd BUCHWALD V.F. (1975) Handbook of Iron Meteorites, Volume 2, pp. 500-502, excerpts: Cosby's Creek, Tennessee, U.S.A. / 35° 47' N, 83° 15' W; 450 m / Coarse octahedrite, Og. Bandwidth 2.5±0.8 mm / Neumann bands / Group IAB-MG / 6.67% Ni / 0.53% Co / 0.29% P 91.5 ppm Ga, 431 ppm Ge, 2.9 ppm Ir The greater part was forged, but about 100 kg fragments have survived in collections. History: A fragment of a larger mass, found about 1837 near Cosby's Creek in Cocke County, was described by Troost (1840) with an analysis. Further information was provided by Shepard (1842; 1847), and by Huntington (1888; 1894) who discussed the identity of a number of similar irons (Sevier County, Greenbrier County, Jenny's Creek, Wilson County, Waldron's Ridge, Smithville and Cosby's Creek), reportedly coming from different places in the Appalachian Mountains. Several of Huntington's suite of irons certainly do not belong with Cosby's Creek, such as Greenbrier County, Jenny's Creek, Waldron Ridge and Smithville. Black Mountain is probably a transported fragment of Duel Hill (1873), since the detailed structures, the general locality of find and the state of terrestrial corrosion are almost identical. According to Shepard the greatest mass of 700-800 pounds weight (another less reliable estimate: 2,000 lbs) was found on an offset of an eminence about 30 m above the bed of Cosby's Creek. It was an oblong, square block from which it was easy to detach fragments because of the violent, terrestrial corrosion that had taken place. The mass was placed upon what is here called a log-heap, where after roasting for some time, it developed certain natural joints, of which advantage was taken with cold chisels and spikes, for its separation into fragments. These were put into a mountain wagon, and transported 30 or 40 miles to Lary's forge in Sevier County and Peter Brown's forge in Greene County. The greater part was wrought into gun scalps (in Tennessee the forged iron bar, before being bored for a gun barrel, is called a gun-scalp - Huntington 1894), horseshoe nails and other articles of common use, but some remnants of the mass fell into the hands of Dr. Troost. Another mass weighing 112 pounds, which was found in the immediate vicinity of the larger mass by a mountaineer, apparently escaped the fate of the larger. It became known under the synonym Sevier County, was divided and went through several hands (Troost, Shepard, Heuland), before it ended up in various collections, the largest part presumably in the British Museum. Many descriptions were given in the nineteenth century, of which, in addition to the above mentioned, those of Reichenbach (1862a), Rose (1864a) and Smith (1876a) are noteworthy. Bergemann (1857) and Cohen (1900b) presented the first reliable analyses, while Farrington (1915) reviewed the literature. Description: Most specimens in collections are heavily corroded fragments with weights from a few grams to a few kilograms. The original surface has lost its regmaglypts and atmospheric sculpturing due to terrestrial weathering and is now covered with 1-3 mm thick adhering crusts. Most specimens appear to be broken fragments; concave smooth impressions of now lost troilite-graphite nodules, 2-5 cm in size, are often found in the fracture surfaces. Some specimens have a crust that indicates slight, artificial reheating, since the color and morphology resemble scale on mill products. Such specimens are probably surviving fragments of the larger mass that was heated in order to split it more easily. Undamaged specimens show a coarse Widmanstätten pattern with a bandwidth of 2.50±0.80 mm. The thinner lamellae are invariably associated with cohenite-rich patches. In the cohenite-poor regions grain growth has often wiped out the Widmanstätten array and created almost equiaxial ferrite grains 3-20 mm in diameter. Neuman bands are common. Cohenite is the dominant mineral in most sections. It occurs typically as 3 x 0.5 mm oblong, rounded, monocrystalline fingers and is occasionally clustered sufficiently to create rosette-like aggregates. Graphite is common, probably always associated with troilite. Smaller graphite and troilite nodules are frequently met with. Some appear to have been parallel, elongated cones of finger size that were easily detached from the matrix. Daubreelite frequently occupies 5-10% of the troilite nodules. Schreibersite is present as 10 x 1 mm skeleton crystals with cohenite rim zones. It further occurs as grain boundary precipitates and as inclusions in cohenite. Phosphides
[meteorite-list] NWA 1794 and Dean's BL NWA 1685 (provisional)
Hello List and BL lovers, Some of you will remember that the brecciated LL5 chondrite NWA 1794 (LL5; S2; W1; br) that has numerous light-colored clasts and interspersed medium and dark gray clasts in its darker parts of the matrix was thought by some of us to be paired with Dean's NWA 1685. My 8.5-gram slice of NWA 1794 (from the Hupés) can be seen on Jeff's website over the caption A similar meteorite, NWA 1794, but not BL (photo courtesy Greg Hupé). The magnified view (16x) was taken by me and shows the same field of view that is visible in Greg's picture, i.e. the edge or corner of that large, creamy white clast with these rusty areas. http://www.meteorites.com.au/oddsends/bl.html The crusts of NWA 1794 and NWA 1685 do indeed look similar, their matrix has that bluish tint (not easily visible in Greg's photo but more so in my 16x magnified pic and also if you look at my slice in person), both meteorites have those achondritic areas that are devoid of chondrules. On the other hand, Jeff K's picture of his NWA 1794 that you can see here: http://www.encyclopedia-of-meteorites.com/photos/nwa1794_meteoritesaustralia1.jpg .. looks totally different. Hmm, the BL mystery lives on and one ;-) Cheers, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Petrographic Thin Section Maker
Paul inquired: Can anyone recommend, off list if desired, one or more petrographic thin section lab(s), who make quality standard petrographic thin sections? Hi Paul and List, If *quality* is the key word, there is only one thin section maker: David Mann from New Mexico! He is the one who used to make David New's thin sections and thin section collectors like Alex Seidel, Mark Bostick, John Kashuba, and others know that these TS are beyond compare! Best wishes, Bernd To: [EMAIL PROTECTED] meteorite-list@meteoritecentral.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Petrographic Thin Section Maker
Capt'n Blood: I have never used ANY other thin section maker. Cost is way higher than others, but product is vastly superior...He also takes MONTHS to get things made ... Good things do take time, as we all know. A superior product even longer! Paul and others may also be interested in this piece of information: Our very own Steve Schoner has also started producing his own thin sections. So far I've only acquired one of these, the Potter TS + the 1.2-gram slice this TS was cut from. To be able to say how professional Steve's thin sections are, I would have to see several different TS, especially ones with lots of chondrules, or ones with colorful crystals (brachinites, acapulcoites, etc.), ones with a lot of delicate details, etc. But, maybe, Steve would like to chime in and share his perspective! As for Dean's TS, there was one advantage apart from the low price: the viewing area was usually enormous, sometimes almost too big - but some were of mediocre quality, others quite good whereas the ones David New sold were always of *superb* quality! There was someone else who used to offer thin sections, and again, the price was tempting. But when I complained about the proper thickness of several of these TS, the person I'm talking about was very upset and angry. I promised him I would apologize, even in public, if my complaint was unjustified. Soon after several of these TS were offered at reduced prices on EBay and the information was correctly given that these thin sections had not been ground to the proper thickness ... needless to say that I did not apologize! Best wishes, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Women in meteorites
.. and there is Twink Monrad .. and there is Anita Westlake .. and there is Jeanne Devon .. and there is Carine Bidaut .. and there is Dr. Monica Grady .. and there is Heike Kammel .. and there is Sarah Kennedy .. and there is Tracy Latimer .. and there is Ginger Mayfield .. and there is Teresa Moss .. and there is Sabine Valange .. and there is A Boy Named Sue Oops, sorry, that's a song once sung by the late Johnny Cash ;-) Best wishes, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Dirk Ross and his BLs for sale
Dirk kindly informed me: The first person contacting out of ...* bought them. *number of potential buyers deleted by me. *If* the respective collector/buyer/dealer wants to have their name added to my private list of BL owners, please contact me via the list or off-list. Best wishes, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] For the record: More on Dean's BL - TKW in collectors' hands
Hello BL owners and List, Of course I don't know how many BL owners there really are and how many of the original masses, cut slices, endcuts, individuals, etc. have changed owners (nor do I know whether any original individuals have been cut up and sold or traded) but the TKW in my personal files presently amounts to 11416.8 grams. There were two shipments (according to Dean). 1st shipment: 41 meteorites totaling 7.7 kg. 2nd shipment: ??? but substantially more than 3.5 kg because one list member then acquired about 3246 grams (this weight is included in the 11416.8 grams). My 251.3 gram piece that you can see on Jeff Kuyken's website (the upper two pieces) was part of this second shipment: http://www.meteorites.com.au/oddsends/bl.html Best wishes, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Dirk Ross and his BLs for sale
Dirk wrote: Anyone interested in purchasing a BL meteorite (purchased from Dean) I have *two* for sale: - BL20 370gr original weight - BL27 221gr original weight and: All *three* have been sold. Thank you to all who requested them. Well, congrats to all who managed to acquire these extraordinary BL meteorites! But: all three ... a typo or was BL #21 also sold? By the way, yesterday I meant to write but forgot that Mike Bandli's jet-black, thickly crusted NWA's are surely out of this world even though they are not BL's! Another special feature that helps recognize BL's as BL's is their pronounced thumbprints - so far only equalled (in my personal opinion) by the impressive thumbprints on Marcin's NWA 2826 (LL5) - they look very much like those of the BL's - I can hardly wait to look at my crusted fragment (132 grams) of NWA 2826 so I can compare its crust and thumbprints to the BL pieces I have. Bernd To: [EMAIL PROTECTED] meteorite-list@meteoritecentral.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Dean's BL chondrite - Black NWA 1685
Mike T. wrote: I would consider sending this off for classification if someone would recommend a good institution that would be willing to look at it. This new slice has both clasts. Hello Mike, Steve, and BL fans, Some interesting tidbits about Dean's BL chondrite because Steve wrote: As always nice info on this most extrordinary piece... I really like to keep this thread going... 1. Dean believes that they are all paired because they came in together in a single bag, they all looked the same and they also had similar magnetic qualities. 2. Bruno Fectay, on the other hand, was convinced that there were seven different chondrites in Dean's lot (three stones of them Taouz 002, LL6). 3. Dirk Ross was also sure there were at least 3 different meteorite types involved 4. In August 2002, Dirk called upon other buyers of Dean's BL: Anyone wanting their NWA from Mr. Bessey classified and compared with the one that I will classify, if interested please send 5-10 grams (enough for a thin section and representing the variation within their stone). This will tell us if they are all paired or not. Please include the BL#. Please contact me offline if interested. 5. Steve Witt saw less metal than in any other chondrite he had ever seen. He wasn't even sure if it was indeed a chrondrite. He couldn't detect any chondrules in his piece. 6. Jim Baxter about BL chondrules: Interestingly in contrast to your description mine has quite a few chondrules scattered in the matrix, a slight predominance of glassy over porphyritic 7. I responded: This afternoon I looked at my cut specimen under my MBC-10 microscope and after quite some time discovered what m a y be round or somewhat oval chondrules but I am not sure ... and if they are chondrules, only a few - 3 or 4. Only a thin section* would definitely clarify this. The chondrule presence or absence thereof is especially interesting as Jim Baxter's specimen has quite a few, readily discernible, scattered chondrules in contrast to my description. * Here is my thin section decription: Both in hand specimen as in thin section there are areas that are absolutely featureless, devoid of any chondrules (some chondrule-like features can be vaguely seen) or other inclusions, and look almost achondritic. The view under crossed polars is breathtaking: While there are chondrules and mineral components of various sizes in a fine-grained, almost opaque groundmass, the featureless clast in my TS shows an incredible, equi- granular structure without any fine-grained, interstitial groundmass ... as if it had been blown or swept away. Instead, hundreds and hundreds of colorful little crystalline pearls (of olivine and pyroxene) that look as if seen from a distance. 8. With regard to the wet look of the fusion crust, Steve Witt also wrote: In areas like concavities where the crust was protected it appears to be v e r y g l o s s y . Best, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] The Black NWA
No, Mike, this is not the real thing ;-) Especially this one: http://img.villagephotos.com/p/2004-11/877141/unclass-msb.jpg is not one of those BL stones that were found and marketed 5 years ago. The one above is probably one of Carsten's recent offers! The real stuff is here: http://www.meteorites.com.au/oddsends/bl.html Here you can also see a picture of one of my two thin sections that shows those countless colorful pearls I mention in my description of what I see in cross-polarized light. Cheers, Bernd To: [EMAIL PROTECTED] Meteorite-list@meteoritecentral.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Black NWA 1685
Hi Steve and List, How did this particular NWA get all this shiny black crust? This is one of the reasons why Dean's BL stone should really get classified officially! This somewhat wet look of the crust does remind me a little of achondritic crusts - eucrites, in particular, just think of Millbillillie or Stannern.. Equally interesting are those achondrite-like featureless areas totally devoid of any chondrules or larger matrix clasts. Instead, they literally consist of thousands of minute, colorful, marble-like silicates - mostly pyroxenes (judging from their colors). Best wishes, Bernd To: [EMAIL PROTECTED] meteorite-list@meteoritecentral.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Delay and porphyritic
What can be the reason for this messages to appear with a delay of 32h? AA porphyritic? Are you sure? The meteorites cool down in a single stage, I believe Hi Armando and List, No idea why there is such a delay! Furthermore, I do not know for sure about the porphyritic thing. This was not my personal comment but I only quoted from the article by Genge and Monica Grady. But Dr. Monica Grady is a List member, so, time permitting, Dr. Grady might perhaps find some spare moments to answer your question much more competently than I ever would be able to! Best wishes, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Fusion crusts on stony meteorites - NWA 2826
Hello Jim, John, Marcin and List, http://img.photobucket.com/albums/v614/CaneySprings/ http://img.photobucket.com/albums/v614/CaneySprings/ http://www.johnkashuba.com/Pages/Meteorite%20Pages/Pictures/NWA2826LL5.htm No matter what it is: fusion crust, impact melt, darker material, one thing is sure: It's one stunning LL5 chondrite with gorgeous crust and beautiful, well-developed thumbprints! John is such an experienced observer and photographer of meteoritic details that I have no problems joining his assessment: it does indeed look like matrix material surrrounded by fusion crust melt! Thanks for sharing ! Bernd P.S.: Marcin still has a few slices for sale but if you should have fallen in love with the 132 gram crusted fragment - too late because I have just bought it ;-) http://www.polandmet.com/_nwa2826.htm __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Fusion crusts on iron meteorites
Mike wrote: Crust is crust, soft, hard, it doesnt matter. It is a crust of material caused to be on the surface of the object by fusion. BUCHWALD V.F. (1975) Handbook of Iron Meteorites, Volume 1, pp. 49-50: While the fusion crusts on stone meteorites are usually the product of simple melting, the crusts on iron meteorites are complex, displaying mixed melts of fully and partially oxidized metal. The fusion crusts are the adhering remnants of ablated material from the last part of the trajectory left on the surface when the velocity decreased below about 3 km/sec., and ablation ceased ... The fusion crusts are, in principle, composed of an exterior, fully oxidized, rapidly solidified nonmetallic melt, and an interior only slightly oxidized melt. Regards, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Fusion crusts on stony meteorites
GENGE M.J. and GRADY M. (1999) The fusion crusts of stony meteorites: implications for the atmospheric reprocessing of extra- terrestrial materials (MAPS 34-3, 1999, 341-356): a) Fusion crusts develop on *all* meteorites during their passage of the atmosphere ... b) Most chondrite fusion crusts are porphyritic and dominated by olivine, glass and accessory magnetite whereas those of the achondrites are mainly glassy. c) Chondrite fusion crusts contain sulphide droplets with high-Ni contents (55 wt%). d) The partially melted substrate of OCs, underlying the outer melted crusts, are dominated by silicate glass and composite metal, sulphide and Cr-bearing Fe-oxide droplets that form as coexisting immiscible liquids. e) Enstatite chondrite substrates contain Cr- and Mn- bearing sulphides. f) The substrates of the CCs comprise a sulphide-enriched layer of matrix. The compositions of melted crusts are similar to those of the bulk meteorite. Differences from whole rock, however, suggest that three main processes control their chemical evolution: 1) the loss and reaction of immiscible Fe-rich liquids, 2) mixing between substrate partial melts and bulk melts of the melted crust, 3) the loss of volatile components by evaporation and degassing. Conclusions, p. 356: The fusion crusts of stony meteorites exhibit considerable variation with meteorite type and compositions and textures that are largely dependent on the bulk chemical and mineralogical properties of the meteorite. Four processes are important in the chemical evolution of fusion crusts: 1) the separation and reaction of Fe-rich sulphide, metal, and oxide liquids, 2) reaction with atmospheric O, 3) mixing of incompatible element-rich partial melts from the substrate with bulk melted crust liquid, 4) the loss of volatile elements by e v a p o r a t i o n and d e g a s s i n g. Best wishes, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Oakley Idaho Iron Meteorite
Jeremiah wrote: I was in the Smithsonian a few weeks ago, looking at their collection. I noticed a very large iron meteorite from Oakley Idaho, that was found in 1926. Does anyone know how I can find more details on it? That's very close to where my inlaws live. Its mostly farm land, and every field, has a large pile of rocks that's been plowed up. I was thinking it might be fruitful to serch those rock piles for more. Hello Jeremiah and List, Here's an excerpt from V.F. Buchwald. Cheers, Bernd BUCHWALD V.F. (1975) Handbook of Iron Meteorites, Volume 3, pp. 932-934, excerpts: Oakley, Idaho, U.S.A. (42°20' N, 113° 42' W; 2,000 m) Coarse octahedrite, Og. / Bandwidth 1.40±0.30 mm Neumann bands / Anomalous, judging from the structure (IIIF) 7.3% Ni, 0.28% P, 7.2 ppm Ga, 1.1 ppm Ge, 5.3 ppm Ir History A mass of about 113 kg was found in 1926 - 10 miles northeast of Oakley, Cassia County. It was lying on the surface of the ground on the west side of Harrison Mountain where it was discovered by two youngsters cutting cedar posts. The meteorite was acquired by the U.S. National Museum and was briefly described by Merrill (1927a), who gave three photographs of the exterior. Revised coordinates and an approximate altitude are given above. Collections: Washington (111.4 kg main mass), Calcutta (14 g). Description The mass is a triangular, domed shield with the average dimensions of 58 x 47 x 10 cm. Along one edge the mass tapers irregularly to a 1-5 cm thick wedge, while near its opposite end it attains its maximum thickness of 20 cm. The present weight is 111.4 kg, and as yet nothing has been cut from it. The finders had, however, broken about 1.5 kg from the thinnest part of the edge, leaving a 16 x 2 cm hackly fracture, and 420 g of this material went to the U.S. National Museum with the main mass. The surface shows three distinct morphologies, each of which is rather well developed ... the convex side was uppermost. The crown of this top side, about 25 cm in diameter and 10 cm high, is much less corroded than the skirt of the top side - probably because the crown was the only part that projected above the ground. The crown is covered with typical, angular ablation regmaglypts, 2-4 cm in diameter and 0.5-1 cm deep; and these are separated by rather smoothly rounded ridges. In a majority of the cavities a 0.1-0.4 mm thick fusion crust is preserved, indicating that hardly any material here has been removed through corrosion. The remaining part of the top side, which was covered by the soil, is considerably corroded. The fusion crust has disappeared and the regmaglypts have been severely altered ... Finally, the concave underside shows boldly carved, large regmaglypts. These are in the shape of shallow bowls, 8-20 cm in diameter and 1-2 cm deep, ... a 0.5-1 mm thick, warty or striated crust. Oakley resembles Cabin Creek, Hra- schina and Murnpeowie a great deal in the flight-sculpturing ... Oakley ... a coarse octahedrite with straight, long kamacite lamellae with a width of 1.40±0.30 mm ... The kamacite shows numerous sub- boundaries decorated with ... phosphides, and Neumann bands are also present. Taenite and plessite cover about 15% by area ... Schreibersite is present ... as rim zones around troilite. It is monocrystalline but brecciated. A small of ... rhabdites. Troilite occurs as irregular nodules ... Daubreelite is present ... The fusion crust is 1 mm thick and composed of layers of metallic melts ... Under the fusion crust there is a 2 mm thick alpha2 zone ... Oakley appears to be an anomalous meteorite ... Specimens in the U.S. National Museum in Washington: 111.4 kg main mass (no. 780, 58 x 47 x 10 cm) 15 g fragment, broken from the edge. To: [EMAIL PROTECTED] meteorite-list@meteoritecentral.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] The Sinnai Chondrite
Hello Matteo, hello List, In the latest issue of our METEORITE magazine, you'll find an article by Matteo (pictures courtesy of Franceso) about the Sinnai chondrite (Sardinia) that fell on February 19, 1956 in the early morning hours. It seems it is an H6 chondrite but could be anything: an H4, H4-5, H5, H5-6, or an H6 chondrite. My assumption is based on its Fa18 value, which is all we find in the literature. Reference: CHINELLATO M. (2007) The Sinnai Meteorite (Meteorite, Feb 2007, Vol.13, No. 1, pp.30-31). Well, Matteo, is anything going on, will it be re-analyzed, did you advise the local authorities to have it re-analyzed? If not, will you consider doing so? In this article you conclude: From the analytical results, one comes to the conclusion that the Sinnai meteorite is an H6 chondrite even though the analysis, occurring a long time ago in 1956, could stand to be repeated now with more modern methods. Inquiring minds ;-) Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] St. Paddy and Kaffir
Much like the word kaffir is, so I hear, a serious slur in some parts of the world while it is just a plant name in the US ... Random House Webster's Unabridged Dictionary: Disparaging and Offensive. (in South Africa) a black person: originally used of the Xhosa people only To: [EMAIL PROTECTED] meteorite-list@meteoritecentral.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Reprise + finale: The red skein of aggressiveness
Mike Farmer wrote: Bernd, I respect you and your opinion, but do not single me out... Hello Mike and List, I got some ayes, I got some flak - even from my Pauline, which is quite normal because there are always two sides to a thing: it takes two to tango. Let me first of all congratulate Mike on his latest find: this extraordinary pallasite - I criticized you so I should also be able to congratulate you on this latest meteoritic feat! Mike is a top-notch meteorite dealer, a top-notch meteorite collector, Mike is a top-notch meteorite hunter, ... his impulsive, eruptive aggressiveness can be quite bothersome! But: He is *NOT a thief, he never stole a meteorite nor ever will - I own an Ourique piece plus a thin section - both from Mike as so many other specimens in my collection and there would be quite a few meteorites missing in our and UoA's collections if Mike Farmer had not been there right in the adventurous footsteps of Bob Haag! I didn't like Armando's latest post in response to my post very much because I did not mean to demean Mike's merits as a collector-hunter-dealer, I was solely referring to his unbridled aggressiveness - no matter what triggers his eruptions, ... the first thing he does, he goes boom! So, I do hope that if ever Mike and I meet in person, either in Ensisheim or in Tucson some day, that we will enjoy a couple of beers, talk meteorites and other things and maybe smile about things we said even though we were serious when said what we said! Best regards, Bernd To: [EMAIL PROTECTED] [EMAIL PROTECTED] meteorite-list@meteoritecentral.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] The red skein of aggressiveness
How much I wish we would have held our horses instead of spitting venom, but this discussion has once again reached a point that makes it hard, at least for me, to keep my mouth shut. Mike, no hard feelings, but though there is no doubt about your efforts and your untiring enthusiasm and though we all know you are willing to risk money and health when it comes to meteorites, Armando does not basically complain about Ourique or any other meteoritic deeds of daring but about your unbridled, hard to stop aggressiveness. Here are a few - just a few(!) comments, excerpts from mails (part of them to be found in the archives), the Matteo-Farmer diatribes are not included, though they are still painfully ringing in most list members' ears (let alone the T-shirt affair). May 2000: Art expelled Mike Farmer for undue behavior on the list. Dec 2000: it was Mike Farmer who started the below the belt campaign. Sep 2001: I think nobody wants to tell Mike Farmer who the...in question is for fear that Mike will rake [him/her] ... over the coals. Aug 2002: As long as he and Mike Farmer don't start slinging mud at one another. The next round has just started :-( You're right about the Farmer-Bessey mudslinging. It really does get out of hand and soils both their reputations when they resort to name-calling. Nov 2002: I agree completely. He seems to type first and think later, and in the meantime 500 people have to read his emotional outbursts. Sep 2003: one of the most aggressive characters is and always has been Mike Farmer. Oct 2003: a few days ago I finally blew up at Mike Farmer for his swearing on the list Nov 2003: we had to wade ankle-deep through the Farmer/Casper diatribes Feb 2004: I've also seen and read Casper come and go, bashing Mike Farmer, when Mike was not so established as he is now - and unfortunately Mike seems to be doing the very same thing now. Mar 2004: I'm afraid Mike is a loose cannon who tends to release his mouth before his brain is fully engaged. Mar 2004: I can see why it is impossible for some List members to express their thoughts. It is no fun getting caught up in a Farmer argument. I must admit, it is hard not to respond to some of his attacks. Just as long as he gets the last word ... Mike Farmer: Anyone selling NWA 987 and saying that there were more stones is full of crap. Apr 2005 (?): the dirty laundry just aired between Farmer and Casper. Regards, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Steve Arnold's Impressive Gao Collection
Knock, knock ! You seem to be building quite a collection of Gao! Go get 'em! The next step in his obsession -- head for the strewn field. Hello Steve and List, First off: I must also admit that this is becoming a very impressive, an awesome collection of Gao meteorites! Sincere congratulations! The next best step after displaying them for all of us to see, would or could now be to study them, to compare them, to look at their respective fusion crusts, to describe their individual characteristics, to do a little research on their different degrees of weathering (and maybe even shock stage[s]), the thickness or thinness of their fusion crusts, and so much more and then share your observations with the List. This would give them a life. Of course, you might also consider constructing a special Gao info page: dates of fall / find, classification, history, repositories, strewn field parameters, scientific papers / articles, and, and, and, ... The next step in his obsession -- head for the strewn field. .. Well, why not!? Gao instead of London if the risks involved are not too high! He would surely come back with some personal finds or purchases. Such specimens have an even higher, personal value! Best regards, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Bernd Pauli's Gaos
Bonjour, Salut, Hello, Zelimir wrote: I bet you also got one Here's what I got - Please enjoy (reading about them)! Gao-ishly, Bernd 1. Gao-Guenie (H5 or H4-5): - thin section: shows fusion crust and shock veins - several (radiating) pyroxene chondrules - pyroxenes outnumber olivines. - crusted individual, two perfect chondrule pits (chondrules missing) - 2.65 g - lenticular dome-shaped frothy vesicular oriented individual, distinct rollover lip - 4.1 g - cut slice / brownish matrix / abundant metal / crust / brecciated - 8.5 g - triangular crusted individual with window showing several chondrules, one side warty - 23.26 g - showpiece purchased from Michael Cottingham: a fully crusted individual, shallow regmaglypts on one side and flight marks - 194 grams 2. Gao-Guenie (imb): Trapezoidal endcut. FeNi flakes close to stream channels preferred orientation. Delicate black veinlets traverse the melt flow. On one side there are remnants of ordinary Gao matrix texture. A few small troilite patches visible - 2.18 grams 3. Gao-Guenie (CR): Oval fragment with large chondrule that contains intrachondrule aggregates - 0.2 gram __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Who's still got their first meteorite?
Jerry Flaherty writes: My first was a generous gift of a 6 gram Gold Basin from John Blennert. None could be more exciting in anticipation, reception and examination. Hello Listees and Listoids, Like so many others, I have to find my first own meteorite yet. But the first meteorite I purchased was a 15-gram cut + etched Mundrabilla slice from Walter Zeitschel - see Meteorite Times interview, May 2002, Vol.1, No.2. Of course, I still have this Little Australian. P.S.: If you are interested in more What was your first meteorite?, the Meteorite Times Magazine interviews (Meteorite People) are an excellent source because virtually all of those interviewed were asked this question! P.S.S.: Speaking of John Blennert's generous gifts, I would like to add that one of my most beautiful Gold Basin meteorites is such a generous gift from John. He sent it (two of them,...to be exact!) in May 1999 and it arrived just a few days after my 54th birthday anniversary. It weighs a whopping 76 grams, it still has traces of its original black fusion crust beneath a thin layer of caliche, and it is definitely flight-marked. Another meteorite that will never leave this collection! Best wishes, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] My Wedding Day Anniversary Meteorite Fall: Jilin
Happy Birthday, Jilin! Jilin, H5; S3 Fell 1976, March 08 Time: 15:00 hrs 11 masses individually recorded Several explosions during flight Three distinct fireballs E-W strewnfield AKA: Kirin Mass: About 4 metric tons Largest individual 1770 kg excavated at a depth of ca. 6 meters. Best wishes, Bernd Bernd Pauli Meteorite Collection: - 35.8-gram slice with abundant FeNi and troilite + shock veins - thin section: barred olivine chondrule shows thick outer igneous rim and thinner inner rim with skeletal olivine set in black glass __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Auckland Meteorite Photo
Tim Heitz inquired: Dean, how many grams is it? Do they have any idea what it is? Hi Tim and List, It's about 1300 grams and you can find photos and other recovery details in this article by our Joel Schiff in his quarterly, issue no.3, vol.10, August 2004, pp. 21-22. Here's an excerpt regarding any idea what it is: The meteorite has not yet been scientifically analyzed yet. I checked it with a magnet and it is only slightly magnetic. The matrix is light gray ... I felt it was an ordinary chondrite, possibly L6 or LL6. (by Joel Schiff). Regards, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] 3-4-07 Update and Thanks!
Sabrina and Rebekah most kindly informed us: ... two more surgeries down the road, but he seems to have made a huge turn for the better. Great news! Wonderful news! Whoever you believe in, .. let's continue to keep Walter, Sabrina, and Rebekah in our thoughts and in our prayers! Bernd + Pauline (celebrating their 39th wedding anniversary on March 08 :-) To: [EMAIL PROTECTED] meteorite-list@meteoritecentral.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Carsten's NWA 4679 CK4
Hello List, I'd like to forward a mail I received from John Divelbiss re: Carsten's new CK4 chondrite. John is one of those who are having problems sending posts to the List but some of us, especially the owners of this unique CK4 chondrite, will find John's comments very interesting! Best wishes, Bernd Hello Bernd and Carsten, First off I want to congratulate Carsten for coming up with this beauty. It really is a unique meteorite. Also, I must tell you how surprised I was at the size of slice I received. A 1 mm thick, 7.9 gram slice is BIG ! Yes, Bernd the 7.9 g slice (#6) is mine now. I must tell you that my interest in that slice was the darker, less feature- less areas...in particular the different colors/hues that you noted. In person those hues and shapes are even more distinct. To me it is melt material, and not a clast or clasts. I have many melts in my collection, and I believe this qualifies as one too. The darker, what I'll call black, material with the triangular wedge is almost featureless. The features I do see seem to be what is left of chondrules and/or CAI's that have been melted. In almost all cases these small spots are white or light brown. Many of the nice chondrules/CAI's in the meteorites normal texture near the darker melt areas also seem to have melted rims around them too, which to me also suggests that this meteorite has been heated by impact. Are we sure we are not looking at a unique CK 4-6 impact melt? With the 6 being the darkest areas, and the in between 5 areas being the brown hued material at the edge of the meteorite in my slice where the remaining features in it are more numerous and more distinct than the black 6 area, yet different and less distinct than the areas with the nice shaped chondrules and CAI's in the bulk 4 area. Carsten...whoever (scientist) is looking at this meteorite is going to have a lot of thinking to do to come up with a final report/analysis about this extraordinary find. John __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Not Proud of Tom
Slight correction :-) = may [tom tom] rest in p i e c e s . Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Happy Birthday Bruderheim
Bruderheim, L6, Alberta, Canada Fell 1960, Mar 04 Time: 08:06 UT TKW 303 kg A bolide was observed by many witnesses and about 303 kg of fragments of the shower were recovered over an area 3 km across. R.E. Follinsbee, L.A. Bayrock (1961) The Bruderheim meteorite fall and recovery (J. Roy. Astron. Soc. Canada 55, 218-228). Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] NWA 4679 Molten Chondrule?
I purchased a 4.0g part slice of NWA 4679 from Carsten Giessler a couple of weeks ago and would appreciate any comments on this unusual looking chondrule. The piece I bought is visible at the bottom of this page: http://www.gi-po.de/ebayfolder/shop/carbopre/carbo.htm The feature I'm referring to is at the top left corner of the piece in Carsten's image. I've tried to get a close up, apologies for the quality: http://www.zen98648.zen.co.uk/temp/nwa4679_closeup_small.jpg The larger chondrule is about 2mm diameter. The smaller one has a pale (bleached?) outer layer and is darker inside. The small chondrule has an appearence suggesting is has melted and flowed around the outside of the larger chondrule. The darker central region is distorted into a tear-drop shape. Hello Matt, Carsten, and List, No direct answer but, ... Here is what I wrote to Carsten and to Christian after I had thoroughly looked at my 8-gram part slice and at all the other slices that Carsten offered in his presale campaign: As such macrochondrules have not been observed in CK chondrites, I wonder where this huge 12-mm BO chondrule comes from. Maybe from the meteorite that collided with the CK parent body of NWA 4679? If so, was it an H, an L, or an LL chondrite? The sheer size of this macrochondrule speaks in favor of an L chondrite. Looking at slice #10 and at slice #11, I noticed the chondrules seem to have a preferred orientation as if matrix and chondrule material had been solidified when still in a half-molten state. If that is true the dark, quasi chondrule-free areas that Carsten describes as clasts might be material that was molten on impact (or some other scenario) and we might be looking at an impact-melted CK4 (CK3.8 - according to M. Denise) if such a thing exists. Furthermore I noticed that these chondrule-free clasts have different hues. Within that area in slice #6 - let me just call it river of melt for the moment - you can see such color shades on the left in Carsten's picture #6, no.2: a triangular, somewhat darker clast (in the picture that clast looks like the contraction cracks in the fresh fusion crust of a meteorite) seems to be wedged into this river of melt. As for your droplet chondrule, maybe it is an intermediary type: half chondrule, half CAI. The late R. Hutchison mentions chondrules that are texturally and mineralogically intermediate between ferromagnesian chondrules and CAIs. Such chondrules have igneous textures and may be of droplet or clast type. Well, igneous again points toward something that solidified from a melt. I'm really looking forward to hearing more about NWA 4679 from professional meteoriticists! Cheers, Bernd To: [EMAIL PROTECTED] meteorite-list@meteoritecentral.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
