Re: [meteorite-list] Gold Basin - A Difficult Meteorite to Find
Wow...I have 2 pieces of the first rares USA meteorite...I am very lucky!! Matteo --- [EMAIL PROTECTED] wrote: Hey Walter, You had better jump on that monster of a specimen. It may be the last you ever see of this hard to come by meteorite, Gold Basin. Bid high and bid often. LOL ;-) Best Regards, Paul In a message dated 7/6/2002 10:09:51 PM Eastern Daylight Time, [EMAIL PROTECTED] writes: Hello Everyone, Was I the only one who didn't know that Gold Basin Specimens are very hard to come by...? A HREF=http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemitem=2119268225;http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemitem=2119268225/A -Walter = M come Meteorite - Matteo Chinellato Via Triestina 126/A - 30030 - TESSERA, VENEZIA, ITALY Email: [EMAIL PROTECTED] Sale Site: http://www.mcomemeteorite.com Collection Site: http://www.mcomemeteorite.info International Meteorite Collectors Association #2140 MSN Messanger: [EMAIL PROTECTED] EBAY.COM:http:[EMAIL PROTECTED]/ __ Do You Yahoo!? Sign up for SBC Yahoo! Dial - First Month Free http://sbc.yahoo.com __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] nwa869
Hello all The problem for me in this meteorite is the inclusions find into, many have strange inclusions type diogenite - I have a slice where is visible a many similar Bilanga piece type material - others have big white inclusions, others black rounded or spot inclusions and etc... who analyzed this meteorite probably find problems for the classification for this inclusions, and the type change - L6, L3/4.4, etc... - this meteorite is many strange and probably is good study very well this, in the NWA 900 slice visible in the Norton Book, the inclusions is many similar to the Zagami matrix and have a probably melt, for the moment the meteorite is under study in Germany and I waith the analysis for see what is it. Regards matteo --- John Divelbiss [EMAIL PROTECTED] wrote: Al, Your point is well taken on the source aspect of this discussion. As with any type, no matter the name or number assigned to it...there is good chance they are from the same asteroid. HED's from Vesta, etc. I just looked at the group I have and quite frankly it is not easy to say they are different materials. Even under the scope. Yet I see the reports of L4 or L5 for NWA 869, L6 for 787, now L3.4/4 for 900, and similar suspicions for 995 (not 905 that I listed in earlier message). Thin sections of each one may help...but as Dean has stated, his section may have thrown off the evaluation of his sample relative to its true petrologic type. All this makes me wonder about the process and accuracy of identifying a particular fall or find. As I understand it, the boundaries between H's and L's can be somewhat blurred when metal and iron contents are in the transition percentage levels. All the more bewildering. I'm glad I'm not assigning these things. How does one know when he or she has got it right? Personally I'm going like them all for being rocks from space. With that in mind is seems silly to argue between one fall or # versus another with mine is different than yours... when at first look they do not appear to be any different. I will however be cautious of paying too much for so called petrological type of 3's and 4's when it isn't obvious. I'll stick with do I like it or want it or not, relative to the price it is offered at ?. Thanx again Al for response, John Divelbiss - Original Message - From: almitt [EMAIL PROTECTED] To: John Divelbiss [EMAIL PROTECTED] Cc: Matteo Chinellato [EMAIL PROTECTED]; dean bessey [EMAIL PROTECTED]; [EMAIL PROTECTED] Sent: Saturday, July 06, 2002 6:07 PM Subject: Re: [meteorite-list] nwa869 Hi John and all, Many of the parent bodies have yet to be identify to the many of the meteorites we have accumulated here on Earth. However there are some suspect parent bodies which have been identified by spectral matches to the asteroids and meteorites. One such match is asteroid Hebe for the H type chondrites. It is obvious from looking at Hebe's surface that it has a variation in spectra as the asteroid rotates representing the different metamorphism (classes) we see from the change in olivine to pyroxene ratio. No doubt the asteroid had a large enough impact at one time to knock it apart allowing the more differentiated classes to show up on the outside, and some of the outer part of the asteroid became buried in the interior as it reassembled into a rubble pile asteroid. It isn't uncommon for H type chondrites to have brecciation of various different classes all in one meteorite. A good example of this is Zag (H3-6) and Noblesville, Indiana an H4 chondrite with H6 clasts. Probably why we get so many of the H type chondrite material now is we are living at a time when the results of the impacts which have been migrating to us over the eons have finally made their way to fall at a constant rate. If we lived in a different time many years from now or very long ago then perhaps and most likely we would sample some other type of meteorite falls. Perhaps it wouldn't be uncommon for some rare type meteorite (to us) to fall at a regular more consistent rate. How does this tie into NWA 869. As stated earlier we don't know all of the parent bodies yet (a good reason for funding to NASA to build a craft to visit as many asteroids as we can) However there is one asteroid of about 7 km in diameter that resides in the main belt and may be related to the L type chondrites and a possible parent body though a very weak link. Asteroid 3628 Boznemcova exhibits spectral qualities to the L's and LL's. It is obviously too small to be a complete asteroid and has been suggested it is a fragment of a much larger asteroid. Perhaps this might be what is left of the NWA 869 and other L type meteorites and why we sample a steady rate of L type chondrites. Beside these parent bodies, we are fairly sure of the Vesta and HED type meteorite
Re: [meteorite-list] cumberland falls
Hi Steve, If you try using a google search (http://www.google.com), I'm sure you will have no problem finding all the meteorite specimens you are looking for. Rob Elliott (http://fernlea.tripod.com/sale1.html) has just updated his site and has some very nice Cumberland Falls pieces. Cheers, Jeff Kuyken I.M.C.A. #3085 www.meteoritesaustralia.com - Original Message - From: Steve Arnold, Chicago!!! [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Sunday, July 07, 2002 12:56 AM Subject: [meteorite-list] cumberland falls Hi list. It seems like I'm looking for everything. Well not true, only things that tickle my fancy. I'm looking for a nice 2 to 4 gram slice of CUMBERLAND FALLS! Does anyone have any forsale or trade??? Please let me know! Have a great day from the Windy city! = Steve R.Arnold, Chicago, IL, 60120 I. M. C. A. MEMBER #6728 The Midwest Meteorite Collector! Collecting Meteorites since,June, 1999!!! __ Do You Yahoo!? Sign up for SBC Yahoo! Dial - First Month Free http://sbc.yahoo.com __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Ebay Experiment II
Hello all at 3 hours my acapulcoite experiment ended, now the price for gr. is $119,23, not many for a acapulcoite when is ended this auction I no put others pieces for sale why I have received a email from Germany where have found strange features in the thin sections and the meteorite is under others analysis if you want the auction is here http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemitem=2117815320 Regards Matteo = M come Meteorite - Matteo Chinellato Via Triestina 126/A - 30030 - TESSERA, VENEZIA, ITALY Email: [EMAIL PROTECTED] Sale Site: http://www.mcomemeteorite.com Collection Site: http://www.mcomemeteorite.info International Meteorite Collectors Association #2140 MSN Messanger: [EMAIL PROTECTED] EBAY.COM:http:[EMAIL PROTECTED]/ __ Do You Yahoo!? Sign up for SBC Yahoo! Dial - First Month Free http://sbc.yahoo.com __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] cumberland falls
In a message dated 06/07/02 15:58:39 GMT Daylight Time, [EMAIL PROTECTED] writes: I'm looking for a nice 2 to 4 gram slice of CUMBERLAND FALLS! Does anyone have any forsale or trade??? Please let me know! Have a great day from the Windy city! Hi Steve Arnold in Chicago. I fly into the Windy City next Wednesday afternoon, and by sheer good luck, I also have a lot of Cumberland Falls slices on my site at www.meteorites.uk.com Next week, all Chicago-bound Cumberland Falls specimens are hand delivered by international courier (me!) at no extra charge. How's that for service??..damn, we're good!! ;-) Cheers, Rob. www.meteorites.uk.com Fernlea Meteorites, The Wynd, Off Dickson Lane, Milton of Balgonie, Fife. KY7 6PY United Kingdom Tel: +44-(0)1592-751563 Fax: +44-(0)1592-751991 Email: [EMAIL PROTECTED]
[meteorite-list] Summers last Ebay thin section sunday
I am going travelling next week and the only ebay auctions that i still have running is the thin sections that will end in a couple hours. Attractions include bilanga still at only $20 and a very paltry $45 for a ureilite and also I have an EH3, Messossiderite and Hvittis EL6 at around $20 and somehow my kansaz CO3 which should be worth well over $100 is only bid at $13. There is a CR2 also at only $24 and some LLs. See my user id amunre or click here: http://cgi6.ebay.com/aw-cgi/eBayISAPI.dll?MfcISAPICommand=ViewListedItemsuserid=amunreinclude=0since=1sort=3rows=200 Cheers DEAN _ You dont have to go to NASA to get a Rock from outer space. Or even from the Planet Mars or the Moon. You just have to visit the Meteorite Shop. www.meteoriteshop.com _ Join the worlds largest e-mail service with MSN Hotmail. http://www.hotmail.com __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Personal Collection sale - ad
Hi all, Having an opportunity to purchase something (non-meteoritic) I have wanted for a long time, I have put up for sale several of my best pieces from my personal collection. These represent the best examples of their respective material that have passed through my hands in the past 10 years or more. These include not necessarily large, but definitely spectacular specimens of Ibitira, LA 001, Shergotty, Thiel Mountains and one of the end pieces of the Haxtun (H/L4) stone. If you are not on my list are interested in at least seeing some VERY fine specimens, contact me off list and I will happily send you the list and URL for the photos. (who knows, I might even consider a lower offer on one of these if my asking price is not met, since, for me, this is like making a trade). RSVP if interested. Thanks for your time, Michael PS: (Since some friends have inquired, I will say there is not a serious problem - this is just about something I want, thank you.) -- Worth Seeing: - Earth at night from satellite: http://antwrp.gsfc.nasa.gov/apod/image/0011/earthlights_dmsp_big.jpg -Earth - variety of choices: http://www.fourmilab.ch/earthview/vplanet.html -- FREE COLLEGE MONEY CLICK HERE to search 600,000 scholarships! http://us.click.yahoo.com/iZp8OC/4m7CAA/ySSFAA/jFYolB/TM -- Michael Blood Meteorites, Didgeridoos Insects in Amber for sale at: http://www.michaelbloodmeteorites.com/ __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] nwa869
I have received the just analysis of my pieces, is L3.8-L6 (breccia) Regards Matteo --- E.P. Grondine [EMAIL PROTECTED] wrote: Hi Al - I don't know if it can be claimed at the present time that these particular asteroids are the parent bodies. It may simply be that the parent bodies are similar in composition to these particular asteroids, in other words that there may be 2 or more asteroids of roughly the same type of composition. ah well, some year it will all be clear... ep --- almitt [EMAIL PROTECTED] wrote: Hi John and all, Many of the parent bodies have yet to be identify to the many of the meteorites we have accumulated here on Earth. However there are some suspect parent bodies which have been identified by spectral matches to the asteroids and meteorites. One such match is asteroid Hebe for the H type chondrites. It is obvious from looking at Hebe's surface that it has a variation in spectra as the asteroid rotates representing the different metamorphism (classes) we see from the change in olivine to pyroxene ratio. No doubt the asteroid had a large enough impact at one time to knock it apart allowing the more differentiated classes to show up on the outside, and some of the outer part of the asteroid became buried in the interior as it reassembled into a rubble pile asteroid. It isn't uncommon for H type chondrites to have brecciation of various different classes all in one meteorite. A good example of this is Zag (H3-6) and Noblesville, Indiana an H4 chondrite with H6 clasts. Probably why we get so many of the H type chondrite material now is we are living at a time when the results of the impacts which have been migrating to us over the eons have finally made their way to fall at a constant rate. If we lived in a different time many years from now or very long ago then perhaps and most likely we would sample some other type of meteorite falls. Perhaps it wouldn't be uncommon for some rare type meteorite (to us) to fall at a regular more consistent rate. How does this tie into NWA 869. As stated earlier we don't know all of the parent bodies yet (a good reason for funding to NASA to build a craft to visit as many asteroids as we can) However there is one asteroid of about 7 km in diameter that resides in the main belt and may be related to the L type chondrites and a possible parent body though a very weak link. Asteroid 3628 Boznemcova exhibits spectral qualities to the L's and LL's. It is obviously too small to be a complete asteroid and has been suggested it is a fragment of a much larger asteroid. Perhaps this might be what is left of the NWA 869 and other L type meteorites and why we sample a steady rate of L type chondrites. Beside these parent bodies, we are fairly sure of the Vesta and HED type meteorite connections as well as the Martian (SNC), and lunar meteorite to Moon connections. It's what makes reading about and research on meteorites so exciting and trying to figure out all of the complicated puzzles they present to us. --AL Mitterling __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list __ Do You Yahoo!? Sign up for SBC Yahoo! Dial - First Month Free http://sbc.yahoo.com __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list = M come Meteorite - Matteo Chinellato Via Triestina 126/A - 30030 - TESSERA, VENEZIA, ITALY Email: [EMAIL PROTECTED] Sale Site: http://www.mcomemeteorite.com Collection Site: http://www.mcomemeteorite.info International Meteorite Collectors Association #2140 MSN Messanger: [EMAIL PROTECTED] EBAY.COM:http:[EMAIL PROTECTED]/ __ Do You Yahoo!? Sign up for SBC Yahoo! Dial - First Month Free http://sbc.yahoo.com __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] nwa869
Hi John, Probably in the past when ordinary chondrites were classified by oxidized iron to iron metal percentages there was no doubt room for more error. Today using the microprobe for chemical analysis, scientists are looking at about ten different items and trace chemical signatures to distinguish the minute variation of the common chondrites. To further help this out and isolate it more, the shock metamorphism is also taken into consideration. Although no process is perfect I think there is a pretty good handle on being able to distinguish individual falls these days using the processes stated. Also weathering comes into play on these. With that said, I would think the bigger problem on a fall coming out of the Sahara desert is whether some nomad decided to throw (or perhaps the rocks just get mixed up in camel transit) into the lot and so we have a mixture of different falls stated to be from one fall. As with meteorite dealers it is a matter of trust on whom you are dealing with and if they are being honest with you or not. This isn't meant to be a grind to those going over there an collecting these items. I don't think it is always a good idea to go by looks on meteorites (I have many in my collection that are similar in appearance but from discrete falls and finds) and until a detail analysis is done then it is really hard to say. As a rule with time when these meteorites are looked at they may refine the classification. With the break up of Hebe and back into a rubble pile we sample a variation of classes in a single chondrite sometimes. I trust the researchers to be able to distinguish the bulk matrix of these finds and produce a accurate classification. It is to their own advantage when they do research on these to know the accuracy of classification on the meteorites they are dealing with so they don't go the wrong direction on understanding them. All my best! --AL John Divelbiss wrote: I just looked at the group I have and quite frankly it is not easy to say they are different materials. Even under the scope. Yet I see the reports of L4 or L5 for NWA 869, L6 for 787, now L3.4/4 for 900, and similar suspicions for 995 (not 905 that I listed in earlier message). Thin sections of each one may help...but as Dean has stated, his section may have thrown off the evaluation of his sample relative to its true petrologic type. All this makes me wonder about the process and accuracy of identifying a particular fall or find. As I understand it, the boundaries between H's and L's can be somewhat blurred when metal and iron contents are in the transition percentage levels. All the more bewildering. __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] nwa869
Hi Al and list, Thank you again for being attentive to my ramblings. You and countless others are close to, and more informed of the process and the expertise given to the analysis of meteorites. I did not mean to trivialize this process...and if I did offend anyone, I'm sorry. My nature, being a mechanical consulting engineer, is to evaluate all situations with a bit of skepticism and caution. It comes through on occasion with my meteorite collection. So does my ignorance on the subject, but I'm learning. As far as looks go when evaluating a particular piece, or when comparing one to another...well that's all I've got, and the word of the seller and it's evaluator. In the case the NWA's, the collection process as you mentioned makes the identification process that much harder to be sure of a given class/type. In the case of 869 and all its brother and sister #'s...I would like to see a concerted effort to nail this one down. The wonderful 900 slices from Matteo deserve it, along with the unique 869 pieces Dean and Mark have seen and offered with nice C clasts and brecciation, the same for 995 slices sold last winter, and let us not forget the beautiful slices of 904 and others (787 I believe) from the Hupes. All of these, and others as Matteo suggested deserve an opinion of are they from the same fall or source?. I would appreciate it, and I'm sure many others would also. How it would get done is a mystery to me. Maybe it could be project for a university to study and comment on. How about it Ron? Well I'm going to stop embarrassing myself on this one. Thanx all for reading. Any identification information on any of the mentioned #'s would be appreciated along the way. Thanx in advance. John - Original Message - From: almitt [EMAIL PROTECTED] To: John Divelbiss [EMAIL PROTECTED] Cc: Matteo Chinellato [EMAIL PROTECTED]; dean bessey [EMAIL PROTECTED]; [EMAIL PROTECTED] Sent: Sunday, July 07, 2002 8:23 PM Subject: Re: [meteorite-list] nwa869 Hi John, Probably in the past when ordinary chondrites were classified by oxidized iron to iron metal percentages there was no doubt room for more error. Today using the microprobe for chemical analysis, scientists are looking at about ten different items and trace chemical signatures to distinguish the minute variation of the common chondrites. To further help this out and isolate it more, the shock metamorphism is also taken into consideration. Although no process is perfect I think there is a pretty good handle on being able to distinguish individual falls these days using the processes stated. Also weathering comes into play on these. With that said, I would think the bigger problem on a fall coming out of the Sahara desert is whether some nomad decided to throw (or perhaps the rocks just get mixed up in camel transit) into the lot and so we have a mixture of different falls stated to be from one fall. As with meteorite dealers it is a matter of trust on whom you are dealing with and if they are being honest with you or not. This isn't meant to be a grind to those going over there an collecting these items. I don't think it is always a good idea to go by looks on meteorites (I have many in my collection that are similar in appearance but from discrete falls and finds) and until a detail analysis is done then it is really hard to say. As a rule with time when these meteorites are looked at they may refine the classification. With the break up of Hebe and back into a rubble pile we sample a variation of classes in a single chondrite sometimes. I trust the researchers to be able to distinguish the bulk matrix of these finds and produce a accurate classification. It is to their own advantage when they do research on these to know the accuracy of classification on the meteorites they are dealing with so they don't go the wrong direction on understanding them. All my best! --AL John Divelbiss wrote: I just looked at the group I have and quite frankly it is not easy to say they are different materials. Even under the scope. Yet I see the reports of L4 or L5 for NWA 869, L6 for 787, now L3.4/4 for 900, and similar suspicions for 995 (not 905 that I listed in earlier message). Thin sections of each one may help...but as Dean has stated, his section may have thrown off the evaluation of his sample relative to its true petrologic type. All this makes me wonder about the process and accuracy of identifying a particular fall or find. As I understand it, the boundaries between H's and L's can be somewhat blurred when metal and iron contents are in the transition percentage levels. All the more bewildering. __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] nwa869
Hi John, I don't think your post should offend anyone and in my opinion is a very relevant question and I wish more people would post along such lines. Until we learn about something then we have to ask questions and anyone putting another person down for asking a GOOD question along these lines forgets they at one time didn't know the answer to the question either! The true nature of science is to ask questions and see if something has been addressed or not. My hopes are that you will continue to ask and good threads as this one continue on for those wanting to learn. I myself have to be humble with the many gifted, and knowledgeable people on the list. Hopefully we will always have someone that will be able to address an issue. Two good books that help out enormously are The Cambridge Encyclopedia Of Meteorites by O. Richard Norton. I am just getting into reading my copy and can see from what I have read and what I have check out, is a wealth of information contain in this book. You are doing yourself an injustice by not having a copy. I am seriously thinking of buying another copy to make sure I am never without it. It is proving to be another fantastic book by Norton. Certainly a work of art more than a book with information. One other book that I always like to recommend is Meteorites and their Parent Planets by Harry McSween Jr. This book gets down into the nitty gritty of meteorites also and helps with the understanding of classification and possible parent bodies. --AL Mitterling __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] nwa869
Hi Al, John and List, Al alluded to something which I would like to expand on and which I think may be a source for at least some of the problems associated with multiple pairings and classifications. Let's take a certain strewn field, a geographical location where meteorites have been found and continue to be found (okay, I admit - I am thinking of NWA). Multiple individuals are finding meteorites. Finder A may find x number of stones, then Finder B etc. and they are being sold to dealers J, K and L. Any given number of resellers get involved. Eventually the individual collector ends up with a given individual, slice, or fragment. All along this path, a given stone has had the opportunity to be typed and assigned a real number or name by the NomCom committee or given a temporary number by someone, then perhaps classed by researchers, perhaps with a number or name change. To be honest, I am surprised that more confusion does not exist with regard to pairings and perhaps it is a testament that there are not many such instances that the system works. Perhaps. -Walter --- Walter Branch, Ph.D. Branch Meteorites 322 Stephenson Ave., Suite B Savannah, GA 31405 USA www.branchmeteorites.com - Original Message - From: almitt [EMAIL PROTECTED] To: John Divelbiss [EMAIL PROTECTED] Cc: Matteo Chinellato [EMAIL PROTECTED]; dean bessey [EMAIL PROTECTED]; [EMAIL PROTECTED] Sent: Sunday, July 07, 2002 9:45 PM Subject: Re: [meteorite-list] nwa869 Hi John, I don't think your post should offend anyone and in my opinion is a very relevant question and I wish more people would post along such lines. Until we learn about something then we have to ask questions and anyone putting another person down for asking a GOOD question along these lines forgets they at one time didn't know the answer to the question either! The true nature of science is to ask questions and see if something has been addressed or not. My hopes are that you will continue to ask and good threads as this one continue on for those wanting to learn. I myself have to be humble with the many gifted, and knowledgeable people on the list. Hopefully we will always have someone that will be able to address an issue. Two good books that help out enormously are The Cambridge Encyclopedia Of Meteorites by O. Richard Norton. I am just getting into reading my copy and can see from what I have read and what I have check out, is a wealth of information contain in this book. You are doing yourself an injustice by not having a copy. I am seriously thinking of buying another copy to make sure I am never without it. It is proving to be another fantastic book by Norton. Certainly a work of art more than a book with information. One other book that I always like to recommend is Meteorites and their Parent Planets by Harry McSween Jr. This book gets down into the nitty gritty of meteorites also and helps with the understanding of classification and possible parent bodies. --AL Mitterling __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] (no subject)
DOES ANYONE HAVE ANY CAT MOUNTAIN AT ALL. ALL I'M LOOKING FOR IS AT LEAST 1 GRAM OR MORE TO BUY. PLEASE LET ME KNOW. = Steve R.Arnold, Chicago, IL, 60120 I. M. C. A. MEMBER #6728 The Midwest Meteorite Collector! Collecting Meteorites since,June, 1999!!! __ Do You Yahoo!? Sign up for SBC Yahoo! Dial - First Month Free http://sbc.yahoo.com __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Honduran moon rock
Check this out,lol http://www.nftext.com/fpweb/fp.dll/$arigeneral/htm/x_dv.htm/_ibyx/chris/_svc/news/_Id/789528125/_k/r7LCJysC5s5R4Hlt
[meteorite-list] A fellow with a rock.
Forwarding this so that someone in the UK can give the fellow a hand. -Robert Beauford : ) [EMAIL PROTECTED] Hi,just wondered if you could give me some advice.I recently dug up what I have been told is a meteorite.Its almost spherical and weighs around 2-21/2 lbs in weight.I was just wondering if you would know any websites located in the UK that I could contact about my find so I could find some more info.Thanks very much for your time. Regards Andy __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
RE: [meteorite-list] nwa869
Hello list, Walter makes some key points here, and it should be pointed out that the NWA situation is not unique in these problems. (Ironic that we refer to finding so many meteorites in such a short time by so many people that we can't keep accurate track of them all as a problem.) NWA is just such a large region, lacking named features even if people would tell us where exactly all the pieces were found, and worked by so many people, the difficulties are magnified. For example, the reason we have Wellman a, Wellman b, etc., and Pampa a, Pampa b, etc., is that it is not uncommon to find distinct meteorites within another's strewn field. Nuevo Mercurio (b) was originally probably just considered by it's finder to be another Nuevo Mercurio ordinary chondrite. It later turned out to be a urelite. Roosevelt County in New Mexico is a prime example of small scale version of what's happening in NWA, with the advantage that more accurate locations of finds have come from Roosevelt County than NWA, which helps sort out pairings. Look at the other stones coming out of the Gold Basin strewnfield. Calcalong Creek was thought to be just another Millibillille by the person who originally picked it up off the ground, and David New had found other new meteorites in batches sent to him from older finds from Austrailia, though at the moment I don't remember which ones. Another problem is testing a representative sample size. In very coase grained breccias, you might need to slice a fairly large sample to see a different variety of clast. Glorieta Mtn can be a beautiful pallasite, but most of it looks like an ordinary iron, and I've seen pictures of sections over 12 across with no hint of olivine. You don't necessarily know how big a sample needs to be to be representative of the meteorite, unless you slice up and sample the whole thing. You can pretty easily decide that the original sample wasn't representative when something new is suddenly found in an old fall though. It is difficult enough to get samples through the labs these days at all, let alone with trying to send multiple samples of what people believe to be one fall to a lab to try to err on the side of too much material. There may be something to the fact that they are coming out of NWA as well. I would imagine if someone found a stone in Roosevelt County tomorrow, near a known find or not, he or she would have a sample sent to a lab for pairing or a new id. Perhaps with all the activity in NWA, and the fact that many of these meteorites are not tested at all, a stone found similarly near a known meteorite in NWA may be more likely attributed to another stone of the same fall than a hypothetical new stone in Roosevelt County. That would be hard for any of us to know for sure. It appears to me from my casual observation of the literature and internet reports that most every stone from Antarctica, unless obviously associated with another stone by very close proximity, pieces fitting together, etc., eventually get their own analysis for id and pairing information. The difficulties in id and pairings in NWA are not unique, though the size and scope of the difficulties may be. My thoughts on the topic . . . . Frank Prochaska -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Walter Branch Sent: Sunday, July 07, 2002 5:43 PM To: almitt; John Divelbiss Cc: [EMAIL PROTECTED] Subject: Re: [meteorite-list] nwa869 Hi Al, John and List, Al alluded to something which I would like to expand on and which I think may be a source for at least some of the problems associated with multiple pairings and classifications. Let's take a certain strewn field, a geographical location where meteorites have been found and continue to be found (okay, I admit - I am thinking of NWA). Multiple individuals are finding meteorites. Finder A may find x number of stones, then Finder B etc. and they are being sold to dealers J, K and L. Any given number of resellers get involved. Eventually the individual collector ends up with a given individual, slice, or fragment. All along this path, a given stone has had the opportunity to be typed and assigned a real number or name by the NomCom committee or given a temporary number by someone, then perhaps classed by researchers, perhaps with a number or name change. To be honest, I am surprised that more confusion does not exist with regard to pairings and perhaps it is a testament that there are not many such instances that the system works. Perhaps. -Walter --- Walter Branch, Ph.D. Branch Meteorites 322 Stephenson Ave., Suite B Savannah, GA 31405 USA www.branchmeteorites.com - Original Message - From: almitt [EMAIL PROTECTED] To: John Divelbiss [EMAIL PROTECTED] Cc: Matteo Chinellato [EMAIL PROTECTED]; dean bessey [EMAIL PROTECTED]; [EMAIL PROTECTED] Sent: Sunday, July 07, 2002 9:45 PM Subject: Re: [meteorite-list] nwa869
