Re: [meteorite-list] Mars Rover's Meteorite Discovery Triggers Questions
Howdy, This is sort of touching on my post the other day; but if the atmosphere is so thin and the meteor retains a lot of velocity, then I would presume the angle of descent would not alter as significantly as it does on Earth either! Everyone is assuming a somewhat vertical impact, but if this meteorite hit at a 'relatively' shallow angle then it may have bounced, ricocheted or rolled across the ground (for a considerable distance) before coming to a stop. A shallow angle through the atmosphere may also go 'some way' to explaining the regmaglypts with a longer burn time. Cheers, Jeff Kuyken I.M.C.A. #3085 www.meteorites.com.au - Original Message - From: Matson, Robert To: meteorite-list@meteoritecentral.com Sent: Friday, January 21, 2005 5:34 AM Subject: [meteorite-list] Mars Rover's Meteorite Discovery Triggers Questions Hi All, One error I noticed in this report: http://www.space.com/missionlaunches/mars_meteor_050120.html Agee pointed out that running across a meteorite on another planetary body would be a first. No meteorite was ever found on the Moon - even with all the survey work done there by both robots and humans, he said. I thought two meteorites were found by Apollo astronauts -- Hadley Rille (an EH chondrite) and Bench Crater (CM1). I think there are two paradoxes to be solved with this fairly large iron meteorite. The first is explaining its size in conjunction with its apparent low level of weathering. Presumably a basketball-sized object made of nickel-iron passing through the thin atmosphere of Mars is going to create a crater or bury itself in a pit. How long will it take to exhume such a meteorite under typical Mars weather conditions? A hundred years? A thousand? Tens of thousands? And how much weathering will take place in that time? Perhaps the first thing to compute is the minimum impact velocity, which when coupled with the local surface hardness should give some idea of what happened at the time of impact. If I can find (or someone can provide) standard atmospheric profile data for Mars, I can estimate the minimum impact velocities and ablation percentages for preatmospheric iron meteorites of various masses assuming grazing incidence and an initial cosmic velocity equal to Martian escape velocity. The actual impact velocity for the Heat Shield Rock will certainly be higher, but at least we'll have a ballpark idea of the minimum impact velocity. The second paradox is the meteorite's shape -- is the (current) Martian atmosphere thick enough to produce the deep regmaglypting we see? My intuition is to guess that it isn't. If today's atmosphere couldn't do it, could the pockets have been created by a combination of atmospheric passage and a long period of weathering? If the answer is still no, then the iron must have fallen a very long time ago when the Martian atmosphere was thicker. But if the atmosphere was thicker, then wouldn't the weathering rates have been higher? Perhaps the solution is that the meteorite fell a very long time ago when Mars' atmosphere was thick enough to produce good regmaglpyts, but that the ground was soft enough that the meteorite buried itself, prolonging its lifetime by reducing the weathering rate. Eventually it became exhumed by erosion/deflation, and whatever weathering rind it had acquired over the millenia was quickly (in terms of geologic time) dust-blasted away exposing bare metal in a now very dry atmosphere. --Rob __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ 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 - Friday, January 21, 2005
ROCKS FROM SPACE PICTURE OF THE DAY: http://www.geocities.com/spacerocksinc/January21.html __ 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 - Friday, January 21, 2005
ROCKS FROM SPACE PICTURE OF THE DAY: http://www.geocities.com/spacerocksinc/January21.html __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Meteor Impact Theory Takes a Hit
What was the Cretaceous-ending event that wiped out the dinos 65 million years ago? It is doubtful it was a single giant meteorite blast in Mexico. Evidence also points to the Chicxulub impact being part of a multiple impact part of history, and also that it was well over a quarter of a million years BEFORE the end of the Cretaceous period. That paints a very different puzzle than a massive earth scalding. One must be very careful about jumping on the bandwagon and not keeping ideas in perspective. Scientists, great scientists, not unlike listmembers tend to fall in love with their own theories after being subjected to fame (press recognition for nice work), fortune (grants, grad students, publications, etc.). Because a great theorist who backpeddles loses a great deal of face. The Permian case has always been far more tenuous. For example, most certainly the meteorite impacts at the time of Chicxulub had a lot to do with the ending of the Cretaceous period, (but...), the difficulty and absense of finding graveyards of scorched or sufficated dinosaurs still relegates this to the brilliant theory department. I am to believe everything I read, then the sexy Single Impact Era Ending Event theory proponents usually mention Chixulub translates to the Tail of the Devil or something similar, perhaps in some Judeochristian sense, or some similar absurdity, the point being how things are interpreted has a lot to do with who is doing the interpreting. I don't believe Chicxulub means that, yet it is all over becausae so and so said it, and it is a good point to me to realize the importance of separating a good theory from a good proof. So while I am a strong proponent of the meteorite shaking up the equilibrium NEAR the end of the Cretaceous, the open mind is important, not to just become a yes person for suggestive theories and group think. For example I do believe in the tektite origin theory which has tektites as terrestrial impact products. I think that is a much more advanced theory and more convincing. But there are still some doubts that have been pointed out in the past from other listmembers and authors, so its nice to be on alert to see how this will eventually shake out and see perhaps what additional factor not contemplated may need to be incorporated into the theory. If you like doing jigsaw puzzles, you probably can relate to that one piece that seems to fit so well before the puzzle is completely finished. Only to find after pondering too long, that the piece in fact doesn't go there, and in a flash you see it goes upside down somewhere else, and suddenly all the other pieces fall right into place without further efforts. Saludos, Doug En un mensaje con fecha 01/20/2005 9:23:57 PM Mexico Standard Time, [EMAIL PROTECTED] escribe: I remember the more than 10 years it took to swing opinion on the Cretacious-ending event. We had all the same but, but, but proposals. We were told that the number of species of dinosaurs had been declining for millions of years --- they were going to die off anyway and that big rock was just a coincidence! __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Looking for Bluff(b)
Hi all, I am looking for a slice of the Bluff (b) meteorite. Anyone able to help me ? Cheers, Christian IMCA #2673 www.austromet.com Christian Anger Korngasse 6 2405 Bad Deutsch-Altenburg AUSTRIA email: [EMAIL PROTECTED] __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Mars Rover's Meteorite Discovery Triggers Questions
The first meteorite found on Mars - Heat shield rock - really raises questions. Based on its size I estimate it is approx. 6-7 liters in volume or around 50 kg mass. The smallest craters on Mars are just a few m in size, e.g. Fram 8 m, but there are smaller ones. Has anyone a clue what the size of the projectile would be to create one of the smaller craters on Mars, e.g. of 5 m diameter? On Earth, as a rule of thumb 1/20 of the crater diameter might be used, this would be just 25 cm for a 5 m crater. Am I totally off? Then why did Heat shield rock not explode upon impact? It actually looks quite nice and undamaged. Might this be an indication for a thicker atmosphere at the time of fall? Maybe the ratio between small impact craters and meteorites can be used to deduce the relative amounts of time Mars had a thin atmosphere as today, or a thicker one... Beda -- * Dr. Beda Anton Hofmann Curator, Earth Science Department Bern Natural History Museum Bernastrasse 15 CH-3005 Bern, Switzerland Phone +41 31 350 72 40 FAX+41 31 350 74 99 e-mail [EMAIL PROTECTED] http://www.nmbe.ch/ * __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Mars Express Images: Fractures of Claritas Fossae
http://www.esa.int/export/SPECIALS/Mars_Express/SEM5K681Y3E_0.html Fractures of Claritas Fossae European Space Agency Mars Express 20 January 2005 These images, taken by the High Resolution Stereo Camera (HRSC) on board ESA's Mars Express spacecraft, show Claritas Fossae, a series of linear fractures located in the Tharsis region of Mars. [Image[ Map showing Claritas Fossae in context The HRSC obtained these images during orbit 563, with a resolution of approximately 62 metres per pixel. The image shows a region centred around latitude 25° South and longitude 253° East. Claritas Fossae is located on the Tharsis rise, south of the three large volcanoes known as the Tharsis Montes, and extends roughly north to south for approximately 1800 kilometres. The linear fractures of Claritas Fossae have widths ranging from a few kilometres to 100 kilometres, and the region is about 150 kilometres wide in the north and 550 kilometres wide in the south. [Image] Colour view of Claritas Fossae These fractures are radial to the Tharsis rise, consistent with the idea that they are the result of enormous stresses associated with formation of the 8-10 kilometre high Tharsis rise. Faults running east to west are also visible in the colour image and may have a similar origin. In the east of the colour image, a prominent linear feature with a dark shadow is visible. This is most likely a normal fault, the eastern edge of a 100 kilometre wide graben. A graben is a block of Mars's crust which has dropped down due to an extension, or pulling, of the crust. This graben is characterised by a smooth surface and the difference in height between the edge of the graben and the plains east of the normal fault is roughly 2.3 kilometres. Alternatively, this feature may have resulted from surface collapse due to magma withdrawal. [Image] Black and white view of Claritas Fossae The smooth surfaces in the image suggest this terrain has been resurfaced by lava flows. The observation that the lava flows have covered some of these faults, particularly in the west and north-east of the image, suggests that Claritas Fossae is older than the surrounding terrain. The outline of a crater with a diameter of 50 kilometres is visible in the centre of the image. The softened appearance of the crater, and especially the observation that fractures extend across the crater, suggest this crater pre-dates the formation of the fractures. South of this crater, a faint outline is visible with a diameter of 70 kilometres, which may be another ancient crater. [Image] Close-up of Claritas Fossae morphology West of these two craters, there is a small region with an interesting morphology, shown in the close-up image. These features seem to be weakly influenced by the north-south fractures. While the cause of emplacement of this terrain is still unclear, collapse of the surface due to the removal of subsurface ice might be responsible for these features. By supplying new image data for Clarita Fossae, the HRSC camera allows improved study of the complex geology and history of the area. The stereo and colour capability of the HRSC camera provides scientists with the opportunity to better understand the Red Planet's morphology, the evolution of rocks and landforms, and helps to pave the way for future Mars missions. [Image] Claritas Fossae in 3 D The colour images were processed using the HRSC nadir (vertical view) and three colour channels. The perspective views were calculated from the digital terrain model derived from the stereo channels. The 3D anaglyph image was created from the nadir channel and one of the stereo channels. Stereoscopic glasses are needed to view the 3D image. Image resolution has been decreased for use on the internet. [Image] Perspective view of Claritas Fossae, looking south-east. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Science Article: Rock Cracks Point North...
Folks, Stumbled upon this article that will undoubtedly be of interest to a number of you. Fascinating theory. Many of the desert and dry lakes hunters can put it to the test. Have any of you noticed this phenomenon? I see no reason why, over time, the process wouldn't apply to a meteorite just as well as any terrestrial rock. It could take millenia for the process to work depending on the how dark the rock is, as well as its chemical contituency. Jerry http://www.livescience.com/forcesofnature/050121_rock_cracks.html __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Mystery Light Seen Over England
http://www.shropshirestar.com/show_article.php?aID=28540 Experts join debate on mystery light Shropshire Star (United Kingdom) January 21, 2005 Astronomical experts have joined forces with puzzled Shropshire residents in a bid to identify the mysterious beam of light spotted in the county's skies. People across the county stopped in their tracks as a massive beam of light lit up the early morning gloom on Tuesday. But no-one could explain what caused the eerie light which disappeared three seconds later. Now county residents and top boffins have drawn up a list of possible explanations for the phenomenon, including an iridium flare, a burning meteor, a bright search light, aircraft landing lights or even a UFO. Sue Oliver, 37, of Briarwood, Brookside, Telford, saw the beam of light at 6.40am while walking her dog at nearby Nedge Hill. She said though she does not usually believe in weird happenings, after seeing the light she thought it could have been a UFO. Montgomeryshire MP Lembit Opik, who has campaigned to raise awareness of the risk of a meteorite or comet hitting the earth, claimed the light was most likely to be an iridium flare, which can illuminate hundreds of square miles and would look like a bright light. But Kev Wildgoose, from the Shropshire Astronomical Society, disagreed and said with 40 years of experience he did not believe it was an astronomical sighting. I'd be more inclined to identify it as an aircraft, perhaps a bright search light, he said. People in Lancashire also reported sighting something strange in the sky on Tuesday. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Mars Rover's Meteorite Discovery Triggers Questions
Hola Beda, List, Good points. Also to consider is that Heat Shield Rock, a piece of nickel-iron steel weighs in weight, just slightly more than quartz does on Earth, the equivalent of about 2.9 g/cc density for comparison. So the 50 kg is the equivalent mg' of 18.8 kg - but still with the tensile strength of steel to maintain cohesivity upon impact. (More mass for the money on Mars for curators and collectors) That is less gravitational weight than most equivalent STONY metetorites sizes on Earth, less than typical basalts, due to the Martian gravity. This, to some appreciable extent offsets for the thin ~1% Martian (vs. Earth) atmosphere. A 1 km/sec (2237 mph) velocity should be survivable for a decent sized iron, though another point to bring up is that meteorites landing on Mars would all exhibit higher shock levels, especially veining, fractures in olivines, etc... And the entry angle as mentioned of course would be more important, as well as shield vs. aerodynamic nosecone shaping... The Martian soil looks like a softer landing than the Sahara sands... Saludos, Doug PS On Earth, ~50 kg Cabin Creek probably fell at ~300 mph (134 km/hr), while a nosecone would be up to the ~700 mph range (312km/hr). En un mensaje con fecha 01/21/2005 9:55:49 AM Mexico Standard Time, [EMAIL PROTECTED] escribe: The first meteorite found on Mars - Heat shield rock - really raises questions. Based on its size I estimate it is approx. 6-7 liters in volume or around 50 kg mass. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] AD: Meteorites and reprints for sale
Hello list, just for your info: I have a few reprints and some meteorites on ebay.com and a few on ebay.de (Germany). Maybe there's something you like;-)! Please go to : http://search.ebay.com/_W0QQsassZpema9 Have a nice weekend! Peter Marmet (pema9) http://www.marmet-meteorites.com/ PS.: List members have 30% off on all prices on my Meteorites for Sale - pages (until end of January)! __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Chondrule Question
Hello List, The following pictures are of an unclassified NWA with what I am assuming is a weathered armored chondrule. I have a lot of OC's with varying degrees of weathering and chondrules poking through the desert varnish that are not weathered like this one. I am wondering why this particular chondrule weathered to a pinkish color. Any ideas? At 10x: http://pg.photos.yahoo.com/ph/dragonsoup_maria/detail?.dir=4ccf.dnm=437a.jpg.src=ph At 60x: http://pg.photos.yahoo.com/ph/dragonsoup_maria/detail?.dir=4ccf.dnm=107b.jpg.src=ph Looking forward to Tucson, Maria __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Heat Shield Rock and DRPA 78001
Hello list, for those who enjoy viewing some selected meteorite pictures I have uploaded another series of images to my gallery page including Karkova, ALH81005, Norton County and Heat Shield Rock: http://www.niger-meteorite-recon.de/en/meteoriten_galerie.htm While loading the image of the Heat Shield Rock I felt reminded to Derick Peak 78001 by the striking surface similarities. Both irons seem to show a similar weathering pattern. On DRPA 78001 the ablation process in the glacial environment caused heavy abrading of the protruding burrs and edges while the inner regmaglypts remained sharply defined. To me it seems that Meridiani Planum Heat Shield Rock shows comparable signs of mechanical ablation. But I am not really convinced that what we see is the result of sand blasting alone. I rather tend to believe that fluvial transportation of the meteorite was involved or at least temporary flooding of the find location. thanks for your comments Svend www.niger-meteorite-recon.de __ Verschicken Sie romantische, coole und witzige Bilder per SMS! Jetzt bei WEB.DE FreeMail: http://f.web.de/?mc=021193 __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] AD - Ben Guerir - SLICES
Hello List I have pleasure to announce that I add tooday slices of Ben Guerir. This is really amazing meteorite. For me, at first look it is similar to any eucrite. Ofcourse without iron. My second observation was that this meteorite is vey similar to Lampiayrie, fall from Burkina Faso. The same big dark inclusions, similar looking matrix. If anyone is interested please take a look. www.polandmet.com PS. Im verry surprised that noone offered slices from this meteorite early. -[ MARCIN CIMALA ]-[ I.M.C.A.#3667 ]- http://www.Meteoryt.net [EMAIL PROTECTED] http://www.PolandMET.com [EMAIL PROTECTED] http://www.Gao-Guenie.com GSM +48(607)535 195 [ Member of Polish Meteoritical Society ] __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] A Comet Strikes the Earth by H.H Nininger.
Hello List, I recently just won the Nininger book called A Comet Strikes the Earth for $15.00. I was just going to check with you all to see if that was a good deal. It was written in 1951 and it is a Soft Cover book that is in good condition. Does anybody else have this book?. Thanks, Mark A. Massey = test'; __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] JOB POSTING - METEORITE PHOTOGRAPHER
Is anybody in Toronto looking for a part time job - maybe once a week for the next 3 or 4 weeks. Must have a functional knowledge of how to use a digital camera and photo editing software. Job basically entails taking hundreds of photos and editing them so that they are ready to use on ebay. Paying CDN$10 an hour. Particularly interested in people who can work weekends like a sunday. If anybody is interested email me off list Sincerely DEAN __ Do you Yahoo!? Yahoo! Mail - Easier than ever with enhanced search. Learn more. http://info.mail.yahoo.com/mail_250 __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] NICE ACHONDRITE SALE - PART TWO
In yesterdays sale of my new achondrite (Eucrite or Howardite) that I had one of the items #15 that wasnt sold and I cut it up. See here http://www.meteoriteshop.com/sales/janachondritesale2.html Some really nice photos here on these lovely slices. I also had picked out four premium uncut examples that I never included in yesterdays sale also and have those four included also. I have them premium priced but well worth it and still way lower than other dealers have offered this for. Unlike yesterday when I had to go to the airport to get a package just after I posted the sale I should be around the next couple hours for if anybody wants to make a purchase an dbe able to keep the site updated from sales. And as with yesterdays sale a big 25% discount of my prices for anything of interest. Paypal preferred form of payment. Sincerely DEAN __ Do you Yahoo!? Read only the mail you want - Yahoo! Mail SpamGuard. http://promotions.yahoo.com/new_mail __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] A Comet Strikes the Earth by H.H Nininger.
Hi MArk and list, I've heard of it and remember seeing the cover, didn't it come with a very small piece of Canyon Diablo? Probably rusted to heck. I think I remember that right... Regards, Tom On Fri, 2005-01-21 at 17:13, Mark A. Massey wrote: Hello List, I recently just won the Nininger book called A Comet Strikes the Earth for $15.00. I was just going to check with you all to see if that was a good deal. It was written in 1951 and it is a Soft Cover book that is in good condition. Does anybody else have this book?. Thanks, Mark A. Massey = test'; __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Cassini Spacecraft 'Sandblasted' by Dust from Saturn System in 2004
Office of News Services University of Colorado-Boulder Boulder, Colorado Contact: Mihaly Horanyi, (303) 492-6903, [EMAIL PROTECTED] Jim Scott, (303) 492-3114 Jan. 19, 2005 Note to Editors: Contents embargoed until 1 p.m. EST on Wednesday, Jan. 19. Cassini Spacecraft Sandblasted By Dust From Saturn System In 2004 New results from the Cassini mission indicate the spacecraft was pelted with sporadic bursts of interplanetary dust as it approached Saturn last year, according to a University of Colorado at Boulder space scientist. Mihaly Horanyi of CU-Boulder's Laboratory for Atmospheric and Space Physics said the dust particle bursts grew more frequent and intense as the Cassini spacecraft closed in on the planet from 40 million miles away in early 2004. Horanyi, also a CU-Boulder physics professor, said the dust might have escaped into space from the planet's outer A ring or perhaps its icy moons, Dionne and Rhea. A paper on the subject was published in the Jan. 20 issue of the journal Nature. In addition to Horanyi, authors include Sascha Kempf, Ralf Srama, Stefan Helfert, Georg Moragas-Klostermeyer and Eberhard Grun of Germany's Max Planck Institute, and Marcia Burton and Mou Roy of NASA's Jet Propulsion Laboratory. Prior to 1993, researchers believed such interplanetary dust particles were made up of primitive material originating from interstellar space, asteroid collisions or from comets whizzing through the solar system, Horanyi said. But in 1993, Horanyi and colleagues found that peculiar bursts of microscopic dust observed streaming from the Jupiter region by the Ulysses spacecraft were emanating from the volcanic plumes of Io, a moon of Jupiter. That was the first indication that dust can escape from planetary systems, he said. The dust particles escaping from the Saturn system also are microscopic in size, ranging from one-tenth of a micron to one-hundredth of a micron, he said. Grains larger than that would be dominated by the gravity of the planet, while smaller grains would be dominated by the electromagnetic fields. Only those within these size limits can escape the system. The dust detector aboard Cassini collects electrical signals from each grain of dust it traps, allowing scientists to infer the mass and speed of the particles, he said. The energetics of the dust particles indicate that the A ring of Saturn is a good candidate for the origin of the dust, Horanyi said. The burst-like phenomenon of dust grains -- which were traveling at an astounding 60 miles per second -- was due to the planet's magnetic field and the solar wind bending the dust trajectories as they streamed from the Saturn system, he said. The dust is probably coming from the Saturn system at a fairly constant rate, but the spacecraft was not always in the right place to detect it, he said. Horanyi also is a member of a CU-Boulder team that has designed and built a dust detector to fly on NASA's 2006 New Horizons mission to Pluto. The New Horizons instrument, designed and built primarily by students, is expected to provide new information on the structure and early formation of the solar system. An identical instrument also built by LASP will be launched in September 2006 on the Aeronomy of Ice in the Mesosphere, or AIM, mission to monitor the dust influx into Earth's atmosphere, he said. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] mars iron classification
Looks like some traces of widmannstaetten pattern on day 352 of the microscopic imager - http://marsrovers.jpl.nasa.gov/gallery/all/1/m/352/1M159431474EFF40DPP2936M2M1.JPG anybody want to try for a visual classification from millions of miles away? __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] A Comet Strikes the Earth by H.H Nininger.
Hi Mark, That sounds about right to me. I came across about a dozen or so or these about 5 or 6 year ago and sold them for about $15.00 each. I think the earliest copyright date I have seen is 1942. One is also part of my recently obtained Meteorite Crater Study Kit. Nininger also published two other boklets, Chips from the Moon and Ask a Question about Meteorites, both of similar size and format (minus any tektite and meteorite specimen) and both collectable. -Walter Branch - - Original Message - From: Mark A. Massey [EMAIL PROTECTED] To: Meteorite-list@meteoritecentral.com Sent: Friday, January 21, 2005 5:13 PM Subject: [meteorite-list] A Comet Strikes the Earth by H.H Nininger. Hello List, I recently just won the Nininger book called A Comet Strikes the Earth for $15.00. I was just going to check with you all to see if that was a good deal. It was written in 1951 and it is a Soft Cover book that is in good condition. Does anybody else have this book?. Thanks, Mark A. Massey = test'; __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
RE: [meteorite-list] mars iron classification
I doubt many on Mars Opportunity have some Nitol for etched the meteorite. Matteo From: Jeff Pringle [EMAIL PROTECTED] To: meteorite-list@meteoritecentral.com Subject: [meteorite-list] mars iron classification Date: Fri, 21 Jan 2005 17:57:04 -0800 Looks like some traces of widmannstaetten pattern on day 352 of the microscopic imager - http://marsrovers.jpl.nasa.gov/gallery/all/1/m/352/1M159431474EFF40DPP2936M2M1.JPG anybody want to try for a visual classification from millions of miles away? __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list _ Ricerche online più semplici e veloci con MSN Toolbar! http://toolbar.msn.it/ è GRATIS! __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
