[meteorite-list] Rocks From Space Picture of the Day - January 18, 2005
http://www.geocities.com/spacerocksinc/January18.html __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] AD - Mediocre Ebay Auctions ending
Hi All... I have some nice specimens ending tonight on ebay. Take a look, or not, your choice. Item #6504993945 Incredibly thin slice of the most important Martian meteorite to come out of Oman. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemcategory=3239item=6504993945rd=1ssPageName=WDVW Item #6504996498 Seldom offered NWA 2046 Martian meteorite. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemcategory=3239item=6504996498rd=1ssPageName=WDVW Item #6504974583 Sikhote-alin with a natural hole weighing 125 grams. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemcategory=3239item=6504974583rd=1ssPageName=WDVW BUT WAIT, THERE'S MORE !! Go to this link and see a complete list of auctions and don't forget to bid high and bid often as I am still trying to raise money for my Tucson show expenses. You wouldn't want to see me dumpster-diving like last year would you? http://members.ebay.com/ws/eBayISAPI.dll?ViewUserPageuserid=catchafallingstar.com Thanks for looking Jim Strope 421 Fourth Street Glen Dale, WV 26038 http://www.catchafallingstar.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] AD - Benguerir eBay auctions ending tonight
Hello list, Just a quick note to tell you that I have got some wonderful fragments of fresh Benguerir meteorite on eBay ending tonight. No rust stains and no reserve price. http://www.stores.ebay.fr/meteoritica Average shipping delay for the US is 5 days ! http://members.ebay.fr/aboutme/stellardust/ Thank you and good luck ! Best wishes, Philippe Thomas http://www.meteoritica.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] NPA 08-14-1950 Pingualuit Crater Found
Paper: The Daily Gleaner City: Kingston, Surrey, Jamaica Date: Monday, August 14, 1950 Page: 4 (of 16) Meteorite Crater 2 1/2 Miles Wide The northwestern tip of Quebec, just south of Baffin Island, is flat, sudden tundra sprinkled thickly with little lakes. Most of them are irregularly shaped. But Prospector Fred W. Chubb noticed, while poring over an aerial photograph, that one lake was almost round and surrounded by a wall of rock. Chubb showed the photo to Dr. V. Ben Meen, director of Torontos Royal Ontario Museum of Geology and Mineralogy. Last week Dr. Meen returned from a quick air visit to the lake and reported it was almost certainly a meteorite crater. (there was no lava or other signs of volcanic activity, and the biggest yet discovered. The lake in the crater (still frozen at the end of July) is 2 1/2 miles across, compared with Arizona's famed meteorite crater, which is four-fifths of a mile across. Its level is about 80 feet above that of other small lakes in the vicinity and around it is a ring of shattered granite that rises 550 feet above the tundra. The rim is lowest in the northwest side, which suggest that the meteorite came from that direction and hit the ground obliquely. 3,000 Years Ago Dr. Meen found no meteoric iron, only a reddish rock that might prove to be a peculiar stony material of which some meteorites are made. But there was plenty of other evidence that some enormous body had buried itself in the earth: shattered blocks of stone from football to freight-car size, and concentric circles in the granite around the crater, like ripples stirred up by a pebble dropped into still water. Dr. Meen estimated that the meteorite must have fallen at least 3,000 years ago, since there are no Indian or Eskimo legends about it. He named it Chubb Crater after the sharp-eyed prospector, and promised that a full-dress expedition would report on it within a year. - Time Magazine (end) Thanks Charles for pointing out the name change of that crater. Strange that they chose to re-name a structure, already in many scientific papers, and more so that they chose a name most of us will have to guess at pronouncing. Those that didn't look over Charles' website should really do so. Great photography Charles! http://www.ottawa.rasc.ca/astronomy/earth_craters/index.html Clear Skies, Mark Bostick www.meteoritearticles.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] NPA 06-29-1951 Meen to Explore Pingualuit Crater
Paper: Sheboygan Press City: Sheboygan, Wisconsin Date: Friday, June 29, 1951 Page: 3 Will Explore Barren Crater Site In Far Northern Canada Washington, D.C. - The National Geographic society and Toronto's Royal Ontario museum today announced a joint expedition to far northern Canada to explore the recently discovered Chubb crater - a giant depression in the earth that closely resembles craters on the moon. Dr. Gilbert Grosvenor, president of the society, disclosed that Dr. Victor Ben Meen, 40, noted Canadian geologist and director of the museum, will lead the expedition. The party will leave by air in mid-July for the barren crater in northern Quebec between Hudson bay and Ungava bay. The scientists expect to land on a nearby ice-free lake and make camp as near the boulder-strewn crater as is possible. Then for the next month, using the most modern scientific instruments including mine detectors, they will search for the search of Chubb crater's origin. Some of the highly specialized equipment required by the expedition was secured through the cooperation of government agencies with Dr. Lyman J. Briggs retired director of the U.S. Bureau of Standards and chairman of the National Geographic society's committee on research. Dwarfed A-Bomb Explosion Dr. Meen believes the Chubb crater was made by a plunging meteorite which exploded between 3,000 and 15,000 years ago. If it was a meteorite, Dr. Meen said, the explosion easily dwarfed the noise and destructive power of the present-day atom bomb. It blasted a round hole over two miles wide and hundreds of feet deep. It raised a rim around the hole averaging 400 feet high. The shock smashed far into bedrock and granite over the surrounding countryside as ridges splash marks - much as a blot of ink leaves splatter marks. Dr. Meen had a preliminary look at the crater last year when he surveyed the area in the company of Frederick W. Chubb, a prospector for gold and diamonds who first spotted the deeply gouged scar, and for whom it is named. Its appearance suggested a tilted cup with one side considerably higher than the other. We started up the 25-degree slope of the rim. Dr Meen recalled. It seemed to be a jumbled heap of fragments of granite. At length, after a climb of nearly 300 feet, we set foot on the top and looked down into the crater. We were so awed by what we saw that I don't believe we spoke or even shook hands. Hundred of fed beneath us lay a perfectly circular lake, cupped in a crater whose walls rose steeply in a slope of 45 degrees. No sound broke from the stillness except the continuous grinding of ice on the water far below and the wind blowing across the crater rim. From where we stood, said Dr. Meen, it was more than 11,000 feet to the opposite side of the rim We were looked down into what may well be the greatest crater of its kind anywhere in the world. (end) __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] NPA 11-07-1951 Meen Proves Pingualuit Crater
Paper: The Hopewell Herald City: Hopewell, New Jersey Date: Wednesday, November 7, 1951 Page: 6 (of 10) Returning Scientists Prove Meteor Gouged Chubb Crater Dr. Victor Ben Meen, geologist who returned to his Toronto home August 23 after four week at Canada's Chubb Crater, has reported finding conclusive evidence that the crater was caused by a meteor smashing into the earth from outer space. Proof of the crater's meteoritic origin had been sought for nearly a month by Dr. Meen, leader of the National Geographic Society-Royal Ontario Museum Expedition working at the crater site on the sub-Arctic wasteland of northwestern Quebec. A prime objective of the expedition, the evidence establishes the crater as the largest known meteor-gouged scar on the face of the earth. Only at the 11th hour of the field visit, Dr. Meen reports, did the big, round, lake-filled hollow in the hard granite of the peninsula between the Hudson and Ungave Bays surrender its centuries-old secret. Three week' work with mine detectors and other specialized equipment had produced nothing conclusive, judged by exacting scientific standards. As the vanguard of the region's sub-zero winter weather began to close in, the expedition scientists intensified their magnetometer survey of the seven-mile-round crater rim. In the final 48 hours before their flyaway, August 22, they came dramatically upon the presence of a magnetic anomaly under the eastern portion of the pushed-up crater rim. A magnetic anomaly, Dr. Meen explains, is a scientific term for a magnet-indicated underground metal-bearing mass. In the glacier-scoured, granite region of the Chub Crater, it constitutes proof of iron-bearing meteoritic material. (end) Clear Skies, Mark Bostick Wichita, Kansas http://www.meteoritearticles.com http://www.kansasmeteoritesociety.com http://www.imca.cc http://stores.ebay.com/meteoritearticles PDF copy of this article, and most I post (and about 1/2 of those on my website), is available upon e-mail request. The NPA in the subject line, stands for Newspaper Article. The old list server allowed us a search feature the current does not, so I guess this is more for quick reference and shortening the subject line now. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] NPA 10-10-1951 PingualuitCrater Deep Mystery
Paper: Hopewell Herald City: Hopewell, New Jersey Date: Wednesday, October 10, 1951 Page: 7 (of 10) Chubb Crater Deep Mystery Origin Still Unknown To Science Expedition CHUBB CRATER, the big scar two miles in diameter mysteriously gouged in the hard granite of Quebec's sub-Arctic north, has a greatest depth of 1,350 feet. Thus the depth of the lake-filled wonder as well as its diameter is more than twice that of Canyon Diablo Crater in Arizona. Cut in comparatively soft sandstone and limestone, the Canyon Diablo cup is 575 feet deep and four-fifths of a mile in diameter. It held clear title as the world's largest known crater of meteoritic origin prior to the recent discovery of Chubb Crater. Meteor Fragments Sought Data on the depths of Chubb Crater, not previously plumbed by man, were sent by air to Washington by Dr. V. Ben Meen, Toronto geologist and leader of the joint National Geographic Society-Toronto Royal Ontario museum expedition, which took the field in the Crate area late in July. Meen's soundings showed the Crater's lake to be 850 feet at its deepest, making it one of Canada's deepest lakes. The rocky, sloping rim rises as much as 500 feet above the lake level in the northeast sector. Still a mystery, however, is now the unique crater originated. Scientists of the expedition are continuing to concentrate efforts in the hunt for metal-bearing meteorite fragments that would constitute adequate geological proof of meteoritic origin. Signs of volcanism (volcanic formation) are absent, and Dr. Meen is still convinced that a meteor from space blasted the deep hole 30 to 160 centuries ago, pushing up its high rim, and scattering granite rocks for miles around the barren peninsula between Hudson and Ungava Bays. (end) Clear Skies, Mark Bostick Wichita, Kansas http://www.meteoritearticles.com http://www.kansasmeteoritesociety.com http://www.imca.cc http://stores.ebay.com/meteoritearticles PDF copy of this article, and most I post (and about 1/2 of those on my website), is available upon e-mail request. The NPA in the subject line, stands for Newspaper Article. The old list server allowed us a search feature the current does not, so I guess this is more for quick reference and shortening the subject line now. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Double postings?
I've been getting two copies of many (all?) of the messages lately, often seperated by several hours. Is everone else? __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Ensisheim circular
Hello List, The latest (full) version of the circular for Ensisheim-2005 (in English) is ready. It can be soon consulted on the web site of Meteorite (www.meteor.co.nz). A few prints (folded circulars) will be available in Tucson as well. Those from the List who wish to receive the circular personally as attachment, please contact me off list. Note that regular dealers who attended the show last year or those who are on my mailing list, will automatically start to receive the circular as attachment in the forthcoming days, along with an official invitation to confirm (or cancel) their coming in 2005. Happy hunting in Tucson to all! Cordially, Zelimir Prof. Zelimir Gabelica Université de Haute Alsace ENSCMu, Lab. GSEC, 3, Rue A. Werner, F-68093 Mulhouse Cedex, France Tel: +33 (0)3 89 33 68 94 Fax: +33 (0)3 89 33 68 15 __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] IAU Symposium 229: Asteroids, Comets, Meteors
http://www.on.br/acm2005/ IAU Symposium No. 229 Asteroids, Comets, Meteors August 7-12, 2005 Buzios, Rio de Janeiro, Brazil The IAU Symposium 229: Asteroids, Comets, Meteors (IAUS229-ACM2005) will focus on all aspects of studies on asteroids, comets, and meteors, including observations, theories of origin and evolution, discoveries, astrometry, dynamics, internal structure, mineralogical composition, space missions, laboratory studies, classifications, and databases. Presentation and discussion of results from space missions are expected too. IAUS229-ACM2005 will be the ninth of the international series of ACM conferences, first held at Uppsala (Sweden) in 1983. The spirit of ACM conferences is to welcome researchers from all nations interested on asteroids, comets and meteors studies to a gathering where ideas can be openly shared and discussed. The hallmark of these meetings is a wide international participation that is representative of the broad international character of the field. Conference Schedule and Format Registration for the conference is expected to start on Sunday, August 7th, at late afternoon. Scientific sessions will start on Monday, August 8th, in the morning. The conference summary and closing address is programmed on Friday, August 12th, after the last oral session. The format of the conference will be organized on the basis of 3 plenary oral sessions per day, with a duration of 1h 30m each. Two of these sessions will be distributed in the morning, from 09:00 to 12:30, with a half-hour coffee break. The third session will occur in the afternoon, from 14:00 to 15:30. This will allocate time for some 15 invited talks of 30 minutes each, and about 90 contributed talks of 10 minutes each. Only plenary sessions will be programmed, since parallel sessions would be incompatible with the interdisciplinary spirit of the meeting. Poster presentations will be exposed during the whole meeting. Dedicated sessions for posters will be scheduled on three days (Monday, Tuesday and Thursday) after the afternoon plenary session. We expect that most communications will be in poster form. Contact Daniela Lazzaro / Fernando Roig Observatório Nacional Rua General José Cristino 77 20921-400, Rio de Janeiro, RJ BRAZIL Phone: +55 (21) 3878-9175 Fax: +55 (21) 2589-8972 E-mail: [EMAIL PROTECTED] __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Bright Meteor Sighted Over England
http://www.eveningleader.co.uk/ihome2/detail.asp?storyid=32992catid=%201officeid=1 I SAW A METEORITE FLYING OVER WREXHAM Evening Leader (United Kingdom) January 18, 2005 A BEWILDERED man claims he saw a meteorite with a bright blue tail racing across the sky over Wrexham. Paul Davies, of Rhosddu, was enjoying a break with four colleagues at Kellogg's, Wrexham Industrial Estate, at 4am on Friday when two of them spotted a ball with a flaming tail shooting across the night sky. Mr Davies said it was the strangest thing he had ever seen and watched in awe before it disappeared in a flash. He said: The only way I can describe it was a ball moving across the sky, obviously under the cloud cover because it was so plain. It was moving so fast it was unbelievable and it was gone in half a second. It went across the sky with this fabulous bright blue trail behind it. It was a very short trail and looked intensely hot. I would love to find out what it was. Met Office spokesman Wayne Elliott confirmed it was a meteorite, known more commonly as a shooting star. He said the brightness creates an illusion that it is close to the earth, but in reality it is much further away. He said: They enter the outer atmosphere fairly regularly and every once in a while there is an absolutely fantastic one. Illusion It burns very brightly and some go quite slowly. It would have burnt up by the time it reached the atmosphere. It was just an illusion, the bright ones you can see through the clouds. In August there is a well-known meteor shower with one or two a minute, but it is amazing when you see one on its own. He added that meteorological movements are not registered or logged. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Today's P.O.D.
Hi All, If you haven't checked it out yet, take a look at today's Rocks from Space P.O.D.: http://www.geocities.com/spacerocksinc/January18.html A big, beautiful Gibeon courtesy of Jim Strope. Looks like a Vulcan or Klingon hand-to-hand-combat weapon... --Rob __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Today's P.O.D.
http://www.geocities.com/spacerocksinc/January18.html A big, beautiful Gibeon courtesy of Jim Strope. Looks like a Vulcan or Klingon hand-to-hand-combat weapon... -- Rob To me it immediately looked like a horse's or a pig's skull :-) Anyway, it is a very interesting piece that also raises questions about its history -- was it part of a larger mass, did it enter the Earth's atmosphere as an independent piece, does it have a distorted Widmanstaetten structure, a heat-affected rim, etc. (Of course, it would be a sin to cut and etch it!) Best wishes, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Today's P.O.D.
Here are some more photos of todays Gibeon Picture of the Day for your viewing pleasure: http://209.238.151.128/gibeon5200b.JPG http://209.238.151.128/gibeon5200c.JPG http://209.238.151.128/gibeon5200d.JPG Jim Strope 421 Fourth Street Glen Dale, WV 26038 http://www.catchafallingstar.com - Original Message - From: [EMAIL PROTECTED] To: Meteorite-list@meteoritecentral.com Sent: Tuesday, January 18, 2005 2:20 PM Subject: [meteorite-list] Today's P.O.D. http://www.geocities.com/spacerocksinc/January18.html A big, beautiful Gibeon courtesy of Jim Strope. Looks like a Vulcan or Klingon hand-to-hand-combat weapon... -- Rob To me it immediately looked like a horse's or a pig's skull :-) Anyway, it is a very interesting piece that also raises questions about its history -- was it part of a larger mass, did it enter the Earth's atmosphere as an independent piece, does it have a distorted Widmanstaetten structure, a heat-affected rim, etc. (Of course, it would be a sin to cut and etch it!) Best wishes, Bernd __ 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] Metal Chunk on Mars Confirmed as Meteorite
http://www.newscientist.com/article.ns?id=dn6899 Metal chunk on Mars confirmed as meteorite New Scientist January 18, 2005 The Opportunity rover has found the first meteorite on the surface of Mars, scientists confirmed to New Scientist on Tuesday. Scientists first spotted the unusual pitted rock sitting by itself near the rover's discarded heat shield earlier in January. An instrument that measures thermal emissions scanned the rock from afar and it appeared to be made from metal, suggesting it was a meteorite. Then, on 15 January, Opportunity extended its instrument arm to the rock. It used its Mossbauer spectrometer to confirm that the rock was made of iron and nickel, showing that it must indeed be a meteorite that had fallen from the sky. This is a wonderful surprise, says the rovers' lead scientist, Steve Squyres, at Cornell University, New York, US. I didn't see this one coming. Prior to the NASA mission, engineers had not foreseen the need to test the rovers' grinding tools on meteorites. In recent days, Honeybee Robotics, which made the grinding tool, conducted the first tests on an iron-nickel meteorite borrowed from the American Museum of Natural History in New York. After an hour of grinding, one-quarter of the grinding head had worn away. For that reason, Squyres said they would not use the real tool on the Martian meteorite. The tool is usually used to remove the dust and outer layers of rocks to unmask their underlying features. Moving on The concentration of meteorites on the Meridiani plains - where Opportunity has roamed since January 2004 - will reflect how active the surface processes are, as these would cover the rocks from space. If researchers can find more meteorites, they may learn more about the erosion and movement of surface materials. Opportunity will now head south, where many small rocks litter the surface. On the other side of Mars, Opportunity's twin rover, Spirit, has not seen any rocks that appear to be meteorites. But only about 2% of the meteorites found on Earth are made of iron and nickel - the rest are made of rock, making them harder to discern against a background of other rocks. Squyres told New Scientist that the rovers may already have passed meteorites without knowing it. There're so many rocks there, Squyres says, I don't think we've really gone through our images. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Ad - Meteoritelab Auctions Ending - Great Material
Dear List Members, We have several great auctions ending in just a few hours. Many are still bargain priced at just 99 cents. Be sure to check out the following link because there are some very cool offerings: To see these officially classified items please click on the link below and go to Go see all current items for sale by this member: http://members.ebay.com/ws2/eBayISAPI.dll?ViewUserPageuserid=meteoritelab True bargains can always be found on our ebay auctions because there are never reserves and most items are started out at just 99 cents. Thank you for looking and if you are bidding, good luck. Adam and Greg Hupe The Hupe Collection Team LunarRock IMCA 2185 [EMAIL PROTECTED] __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Organic Molecules Transport Strongest Spectral Signature of Interplanetary Dust Particles
http://www.llnl.gov/pao/news/news_releases/2005/NR-05-01-02.html Lawrence Livermore National Laboraty News Release Contact: Anne Stark Phone: (925) 422-9799 E-mail: [EMAIL PROTECTED] FOR IMMEDIATE RELEASE January 13, 2005 NR-05-01-02 Organic molecules transport strongest spectral signature of interplanetary dust particles LIVERMORE, Calif. - Carbon and silicate grains in interplanetary dust particles are helping scientists solve a 40-year-old astronomical mystery. Using a transmission electron microscope, researchers from Lawrence Livermore National Laboratory have detected a 5.7-electron volt or 2175 Å (angstrom) wavelength feature in interstellar grains that were embedded within interplanetary dust particles (IDPs). They found that this feature is carried by carbon and amorphous silicate grains that are abundant in IDPs and may help explain how some IDPs formed from interstellar materials. The research appears in the Jan. 14 edition of the research journal Science. Interplanetary dust particles gathered from the Earth's stratosphere are complex collections of primitive solar system and presolar grains from the interstellar medium. The strongest ultraviolet spectral signature of dust in the interstellar medium (the gas and dust between stars, which fills the plane of a galaxy) is the astronomical 2175 angstrom feature or 2175 Å bump. Production of this interstellar feature is generally believed to originate from electronic transitions associated with the surfaces of very small grains. The carbon and silicate grains may have been produced by irradiation of dust in the interstellar medium. The measurements may help explain how interstellar organic matter was incorporated into the solar system. In addition, they provide new information for computational modeling, laboratory synthesis of similar grains and laboratory ultraviolet photo-absorption measurements. Our finding potentially breaks a log-jam in the search for the carrier of the astronomical 2175 Å feature, said John Bradley, director of Livermore's Institute for Geophysics and Planetary Physics and lead author of the paper. Over the past 40 years, a whole variety of exotic materials have been proposed, including nano-diamonds, fullerenes, carbon 'onions' and even interstellar organisms. Our findings suggest that organic carbonaceous matter and silicates, the 'common stuff' of interstellar space, may be responsible for the 2175 Å feature. Other Livermore scientists on the project include Zu Rong Dai, Giles Graham, Peter Weber, Julie Smith, Ian Hutcheon, Hope Ishii and Sasa Bajt. Outside collaborators include researchers from UC Davis, Lawrence Berkeley National Laboratory, Washington University and NASA-Ames Research Center. Founded in 1952, Lawrence Livermore National Laboratory is a national security laboratory, with a mission to ensure national security and apply science and technology to the important issues of our time. Lawrence Livermore National Laboratory is managed by the University of California for the U.S. Department of Energy's National Nuclear Security Administration. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] COOL NEW METEORITE
Here are some photos of my really cool new 1770 gram achondrite http://www.meteoriteshop.com/sales/1770a.jpg http://www.meteoriteshop.com/sales/1770b.jpg http://www.meteoriteshop.com/sales/1770e.jpg This was cut before I got it but I havent made efforts to classify it. Compare my photos with pictures of NWA2696 and NWA3117 howardites which sell for $20 or so a gram. I also have some kilos of smaller ones but havent had a chance to cut any yet to try and make pairings. I am open to serious offers on this 1770 gram rock with half nice crust so email me if you might be interested in buying it but I will be out for the next couple of hours so I might be slow with emails. Cheers DEAN __ Do you Yahoo!? Yahoo! Mail - 250MB free storage. Do more. Manage less. 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] Chip Sniffs Out The Building Blocks of Life
http://www.newscientist.com/article.ns?id=dn6889 Chip sniffs out the building blocks of life New Scientist Kelly Young January 18, 2005 A small glass chip that could one day help sniff out the building blocks of life on Mars has successfully detected sparse organic compounds in barren, Mars-like environments on Earth. In preparation for future robotic missions, scientists tested the Mars Organic Analyzer (MOA) with samples collected from two deserts thought to closely match conditions on the Red Planet - the Atacama Desert in Chile and the Panoche Valley in California, US. The Atacama Desert can go years without rain and its high elevation means it soaks up lots of ultraviolet light. This makes for a highly oxidising environment, similar to that found on Mars. It is essentially the most barren place we can find, so if we can detect signs of life - present or past - in that region, then at least we are certain of the ability of our instrumentation to perform with the same sensitivity on Mars, says Alison Skelley, at the University of California, Berkeley, US, who led the study. The briefcase-sized instrument, housing the four-layer glass microdevice, successfully detected amino acids in the range of 10 to 500 parts per billion from soil samples collected in the desert. Parts per trillion In the Panoche Valley, researchers coupled the MOA with another instrument called the Mars Organic Detector (MOD), which is how it would be used on Mars. Together, the instruments found amino acids in the range of 70 parts per trillion to 100 parts per billion in jarosite, a mineral that has already been detected on Mars. The research is important to help scientists work out whether life could ultimately survive on Mars. Life in human terms requires liquid water, organic molecules and a source of energy. In 1976, NASA's Viking landers carried instruments that checked for organic molecules on Mars, but failed to find anything. Scientists now suspect that this was because of the planet's highly oxidising environment, which would change any organic molecules into a form that would have been undetectable by Viking's instruments. The MOA takes into account this highly oxidising environment and is 1000 times more sensitive than Viking's instruments. Dying to detect A probe carrying the device would scoop up a sample of soil and place it into the MOD, which would heat up the sample to 500°C. This heat should cause any organic molecules in the rock to turn to gas, which could then be condensed onto a cold, dye-covered surface. The dye attaches to a particular reactive group, present on all amino acids, so if any of these molecules are present they become labelled. Any fluorescence seen by the detector indicates the presence of an amino acid. At this stage the MOA takes over. Through a series of tiny pumps and channels, the analyser can separate out different amino acids. The MOA still has several engineering challenges ahead, say its designers. It needs to be fully automated and able to handle 80 to 100 soil samples. It is being considered for a European Space Agency orbiter/rover mission, called ExoMars, which is scheduled for launch in 2009 or 2011. But it will not be used by NASA for its next big landing mission, the Mars Science Laboratory, set for a 2009 launch. Instead of the Mars Organic Analyzer, the roving Mars Science Laboratory will carry the Sample Analysis at Mars instrument suite to detect organic compounds. It uses a gas chromatograph mass spectrometer - an advanced version of the device flown on the Viking landers. In addition, a laser will vaporise soil so its molecular composition can be analysed. Journal reference: Proceedings of the National Academy of Sciences (vol 102, p 1041) __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] amgala and ben guierer
Hi list.Just wondering if there is going to be any amgala or the new fall, ben guierer in tucson?Just wondering for my info! steve arnold, chicago = Steve R.Arnold, Chicago, IL, 60120 I. M. C. A. MEMBER #6728 Illinois Meteorites website url http://stormbringer60120.tripod.com http://members.ebay.com/aboutme/illinoismeteorites/ __ Do you Yahoo!? Take Yahoo! Mail with you! Get it on your mobile phone. http://mobile.yahoo.com/maildemo __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
RE: [meteorite-list] NASA Rover Finds Meteorite on Surface of Mars
There must be thousands, if not millions of them just sitting on the surface. Just imagine the odds. This rover, for all the distance it has traveled, barely measures a walk in the park, and it comes across a basketball size iron meteorite? WOWZER. CharlyV -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ron Baalke Sent: Tuesday, January 18, 2005 6:51 PM To: Meteorite Mailing List Subject: [meteorite-list] NASA Rover Finds Meteorite on Surface of Mars http://www.montereyherald.com/mld/montereyherald/news/politics/10674958.htm NASA rover finds meteorite on surface of Mars JOHN ANTCZAK Associated Press January 18, 2005 LOS ANGELES - In a stroke of luck, the NASA rover Opportunity has discovered a basketball-size metal meteorite sitting on the surface of Mars, the mission's main scientist said Tuesday. Opportunity came upon the meteorite last week while it was taking a look at a spacecraft shell that was jettisoned before landing after protecting the rover during its plunge through the martian atmosphere. Tests performed during the weekend confirm it is a nickel-iron meteorite, said Steve Squyres, a Cornell University scientist who is the principal investigator for NASA's Mars Exploration Rovers mission. I didn't see this one coming, Squyres said. I try very hard to anticipate the things that we might find and the things we might need to know, and be prepared for things, but an iron meteorite was not something that I was expecting. Whether or not other meteorites are found may help scientists determine whether the martian surface is being covered by wind-blown materials or whether surface material is being stripped away, Squyres said. Opportunity landed Jan. 24 on the Meridiani plains, halfway around the planet from where its twin, Spirit, set down in the Gusev Crater region on Jan. 3, 2004. Opportunity, a six-wheeled robot geologist, quickly discovered rocks showing that its area of Meridiani was once soaked in water, the major scientific finding of the twin-rover mission. After that it explored rocks in a deep crater and then went to conduct an engineering study of its jettisoned heat shield. The meteorite was sitting nearby. I've actually told the team that we probably shouldn't linger here long because this is obviously the place at Meridiani Planum where large metal objects fall from the sky, Squyres joked. The meteorite immediately appeared different from anything scientists had seen at either landing site. And then we looked at it with our infrared spectrometer and it looked like the martian sky, which is really weird, he said. The metal surface, he explained, was reflecting sky radiation instead of emitting much of its own. During the weekend, the rover drove to the meteorite and deployed its instrument arm to confirm its origin. The rover used its brush to remove dust but did not try to grind into the meteorite with its rock abrasion tool because of the outcome of a test conducted by the tool's maker, Honeybee Robotics of Manhattan. We contacted the meteorite department at the American Museum of Natural History in New York and they were generous enough to give us a piece of nickel-iron meteorite to try grinding into, and in like an hour of grinding we wore away about 25 percent of the grinding heads, Squyres said. We designed our rock abrasion tool for rock. We didn't design it for nickel-iron alloys. Scientists are not interested in the meteorite itself. Rather, they want to see if other objects spotted out on the Meridiani plains are also meteorites and what that might tell them about Mars. You've got sort of a steady rain of meteorites on to the martian surface. It's at a very slow rate, but they are going to accumulate over time. Squyres said. If sand is continually blowing in and being deposited on the surface, burying things and building up terrain over time, meteorites will be covered and few will be seen, he said. But if fine surface material is being continuously stripped away by the wind, coarse things like meteorites will be left behind and their accumulation will show. So whether you're seeing a net accumulation or a net burial of the meteorites is going to tell you something about what the erosion or deposition rates are out on the plains, he said. __ 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] NASA Rover Finds Meteorite on Surface of Mars
Charly, List, Mars has a surface area of around 50 million square kilometers. So, if the Red Rover has done a small fraction of a kilometer around the Valley and we scale it up, I'd say about a billion of the metal ones, and then another 12 billion stonies. (Sagan billions, not British ones). But so far all we know is that it is there is one on the planet. Statistics...can be misleading...but my jaw also fell!!! Did anyone notice this statement in the article: Scientists are not interested in the meteorite itself. Ouch So what are we, chopped liver? And that meteorite??? It's a coverup. What a ratty RAT... They need some of you veteran cutters on staff at NASA, right Al. Al, Bill, Bill, Jim, Jim, Jaime, John, Michel, Marvin, Marcin, Mike, Andi, and the rest of all you who I really would mention if I just knew...Guys do your patriotic duty and give the next rover a hand. Or a paw Saludos, Doug En un mensaje con fecha 01/18/2005 6:05:34 PM Mexico Standard Time, [EMAIL PROTECTED] escribe: There must be thousands, if not millions of them just sitting on the surface. Just imagine the odds. This rover, for all the distance it has traveled, barely measures a walk in the park, and it comes across a basketball size iron meteorite?WOWZER. CharlyV -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ron Baalke Sent: Tuesday, January 18, 2005 6:51 PM To: Meteorite Mailing List Subject: [meteorite-list] NASA Rover Finds Meteorite on Surface of Mars http://www.montereyherald.com/mld/montereyherald/news/politics/10674958.htm NASA rover finds meteorite on surface of Mars JOHN ANTCZAK Associated Press January 18, 2005 LOS ANGELES - In a stroke of luck, the NASA rover Opportunity has discovered a basketball-size metal meteorite sitting on the surface of Mars, the mission's main scientist said Tuesday. Opportunity came upon the meteorite last week while it was taking a look at a spacecraft shell that was jettisoned before landing after protecting the rover during its plunge through the martian atmosphere. Tests performed during the weekend confirm it is a nickel-iron meteorite, said Steve Squyres, a Cornell University scientist who is the principal investigator for NASA's Mars Exploration Rovers mission. I didn't see this one coming, Squyres said. I try very hard to anticipate the things that we might find and the things we might need to know, and be prepared for things, but an iron meteorite was not something that I was expecting. Whether or not other meteorites are found may help scientists determine whether the martian surface is being covered by wind-blown materials or whether surface material is being stripped away, Squyres said. Opportunity landed Jan. 24 on the Meridiani plains, halfway around the planet from where its twin, Spirit, set down in the Gusev Crater region on Jan. 3, 2004. Opportunity, a six-wheeled robot geologist, quickly discovered rocks showing that its area of Meridiani was once soaked in water, the major scientific finding of the twin-rover mission. After that it explored rocks in a deep crater and then went to conduct an engineering study of its jettisoned heat shield. The meteorite was sitting nearby. I've actually told the team that we probably shouldn't linger here long because this is obviously the place at Meridiani Planum where large metal objects fall from the sky, Squyres joked. The meteorite immediately appeared different from anything scientists had seen at either landing site. And then we looked at it with our infrared spectrometer and it looked like the martian sky, which is really weird, he said. The metal surface, he explained, was reflecting sky radiation instead of emitting much of its own. During the weekend, the rover drove to the meteorite and deployed its instrument arm to confirm its origin. The rover used its brush to remove dust but did not try to grind into the meteorite with its rock abrasion tool because of the outcome of a test conducted by the tool's maker, Honeybee Robotics of Manhattan. We contacted the meteorite department at the American Museum of Natural History in New York and they were generous enough to give us a piece of nickel-iron meteorite to try grinding into, and in like an hour of grinding we wore away about 25 percent of the grinding heads, Squyres said. We designed our rock abrasion tool for rock. We didn't design it for nickel-iron alloys. Scientists are not interested in the meteorite itself. Rather, they want to see if other objects spotted out on the Meridiani plains are also meteorites and what that might tell them about Mars. You've got sort of a steady rain of meteorites on to the martian surface. It's at a very slow rate, but they are going to accumulate over time. Squyres said. If sand is continually blowing in and being deposited on the surface, burying things and building up terrain
[meteorite-list] NASA Rover Finds Meteorite on Surface of Mars
Hi All, Regarding the probable (?) meteorite on Mars, I would think there would be some other test(s) that could be performed to confirm the object is a nickel/iron meteorite -- aside from depending on the IR spectrometer. Don't suppose they thought to bring a little hand magnet along. ;-) Actually, assuming it is indeed an iron meteorite, a strong magnet aboard could be hazardous -- might get stuck there! Since they weren't willing to risk damaging/destroying the rock abrasion tool, did they have any other instruments aboard that could have been used in a clever way (perhaps in combination with each other) to confirm the object is metallic? Electrical conductivity, for instance? --Rob __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] NASA Rover Finds Meteorite on Surface of Mars
Oops, make that 150 million square km. So 3 billion iron and 60 billion DIFFERENT stone. There is hope after ANSMET and Morocco:) En un mensaje con fecha 01/18/2005 6:25:08 PM Mexico Standard Time, [EMAIL PROTECTED] escribe: Charly, List, Mars has a surface area of around 50 million square kilometers. So, if the Red Rover has done a small fraction of a kilometer around the Valley and we scale it up, I'd say about a billion of the metal ones, and then another 12 billion stonies. (Sagan billions, not British ones). But so far all we know is that it is there is one on the planet. Statistics...can be misleading...but my jaw also fell!!! Did anyone notice this statement in the article: Scientists are not interested in the meteorite itself. Ouch So what are we, chopped liver? And that meteorite??? It's a coverup. What a ratty RAT... They need some of you veteran cutters on staff at NASA, right Al. Al, Bill, Bill, Jim, Jim, Jaime, John, Michel, Marvin, Marcin, Mike, Andi, and the rest of all you who I really would mention if I just knew...Guys do your patriotic duty and give the next rover a hand. Or a paw Saludos, Doug En un mensaje con fecha 01/18/2005 6:05:34 PM Mexico Standard Time, [EMAIL PROTECTED] escribe: There must be thousands, if not millions of them just sitting on the surface. Just imagine the odds. This rover, for all the distance it has traveled, barely measures a walk in the park, and it comes across a basketball size iron meteorite? WOWZER. CharlyV -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ron Baalke Sent: Tuesday, January 18, 2005 6:51 PM To: Meteorite Mailing List Subject: [meteorite-list] NASA Rover Finds Meteorite on Surface of Mars http://www.montereyherald.com/mld/montereyherald/news/politics/10674958.htm NASA rover finds meteorite on surface of Mars JOHN ANTCZAK Associated Press January 18, 2005 LOS ANGELES - In a stroke of luck, the NASA rover Opportunity has discovered a basketball-size metal meteorite sitting on the surface of Mars, the mission's main scientist said Tuesday. Opportunity came upon the meteorite last week while it was taking a look at a spacecraft shell that was jettisoned before landing after protecting the rover during its plunge through the martian atmosphere. Tests performed during the weekend confirm it is a nickel-iron meteorite, said Steve Squyres, a Cornell University scientist who is the principal investigator for NASA's Mars Exploration Rovers mission. I didn't see this one coming, Squyres said. I try very hard to anticipate the things that we might find and the things we might need to know, and be prepared for things, but an iron meteorite was not something that I was expecting. Whether or not other meteorites are found may help scientists determine whether the martian surface is being covered by wind-blown materials or whether surface material is being stripped away, Squyres said. Opportunity landed Jan. 24 on the Meridiani plains, halfway around the planet from where its twin, Spirit, set down in the Gusev Crater region on Jan. 3, 2004. Opportunity, a six-wheeled robot geologist, quickly discovered rocks showing that its area of Meridiani was once soaked in water, the major scientific finding of the twin-rover mission. After that it explored rocks in a deep crater and then went to conduct an engineering study of its jettisoned heat shield. The meteorite was sitting nearby. I've actually told the team that we probably shouldn't linger here long because this is obviously the place at Meridiani Planum where large metal objects fall from the sky, Squyres joked. The meteorite immediately appeared different from anything scientists had seen at either landing site. And then we looked at it with our infrared spectrometer and it looked like the martian sky, which is really weird, he said. The metal surface, he explained, was reflecting sky radiation instead of emitting much of its own. During the weekend, the rover drove to the meteorite and deployed its instrument arm to confirm its origin. The rover used its brush to remove dust but did not try to grind into the meteorite with its rock abrasion tool because of the outcome of a test conducted by the tool's maker, Honeybee Robotics of Manhattan. We contacted the meteorite department at the American Museum of Natural History in New York and they were generous enough to give us a piece of nickel-iron meteorite to try grinding into, and in like an hour of grinding we wore away about 25 percent of the grinding heads, Squyres said. We designed our rock abrasion tool for rock. We didn't design it for nickel-iron alloys. Scientists are not interested in the meteorite itself. Rather, they want to see if other objects spotted out on the Meridiani plains are also meteorites and what
Re: [meteorite-list] NASA Rover about to make a BIG mistake
Rob, list I think the mission manager still hasn't got it with all due respect. They say they didn't see this coming! Just think about what could be learned by using the RAT for a minute to work on the fusion crust area. Finally we have a material we understand somewhat under theRover's loop, it seems to me someone better reconsider quickly and not pass up this opportunity to learn what a relatively know material on earth does as it passes through the atmosphere, and how it weathers on the surface, etc. They lose 25% of the abrasive property of the RAT after an hour it says. Like a minute is a problem??? Gee, I think the NASA team needs to get taken in the shack in the back to see how you guys wear out your blades. The limiting time is not the abrasive action of the RAT considering logistics. Or are they afraid that a little piece of schreibersite?? Doug PS Where are the Strawberry Fields on Mars...many were expecting lots of tektites -those of us who believe they are impact glass. And they just might be strawberry colored on the red planet... En un mensaje con fecha 01/18/2005 6:35:56 PM Mexico Standard Time, [EMAIL PROTECTED] escribe: Since they weren't willing to risk damaging/destroying the rock abrasion tool, did they have any other instruments aboard that could have been used in a clever way (perhaps in combination with each other) to confirm the object is metallic? Electrical conductivity, for instance? --Rob __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] NASA Rover about to make a BIG mistake
Hello Everyone, I am intrigued by the color of the martian meteorite. It looks like bright metal. I have wondered about the actual color of iron asteroids in space. Would they appear bright and shiny or would they would be discolored by cosmic ray and solar wind bombardment, as are stones. There would obviously be no fusion crust on the surface of the asteroid. How much of a fusion crust would form on an iron meteorite as it fell through the thin Martian atmosphere? Would it weather slowly, if at all? Would eons of sandblasting by Martin dust stormes constantly abrade the surface, exposing bright metal? Just think, if we could get a good representative sampling of Martin meteorites with differing cosmic ray exposure ages, and different degrees of weathering (assuming we understand the weathering process on Mars) might we be able to get an indirect indication of different atomospheric, meteorological and geophysical condition in times past. Just something to ponder over a nice plate of spaghetti with meatballs... -Walter __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] NASA Rover Finds Meteorite on Surface of Mars
Hi Ron, When you consider infintesimal the odds of finding a meteorite here on Earth after traversing as short a distance as the rovers have, you have to ask whether there are local factors on Mars which dramatically increase the number of meteorites per square kilometer on the surface there. I assume the lack of water there would probably significantly decrease weathering relative to Earth. I wonder also, though, whether the influx of meteorites to the surface there may be significantly greater than on Earth leading to a higher surface density. Are you aware of models or data that would predict a higher influx of meteorites to the Martian surface? Regards, Jim Baxter http://www.montereyherald.com/mld/montereyherald/news/politics/10674958.htm NASA rover finds meteorite on surface of Mars JOHN ANTCZAK Associated Press January 18, 2005 LOS ANGELES - In a stroke of luck, the NASA rover Opportunity has discovered a basketball-size metal meteorite sitting on the surface of Mars, the mission's main scientist said Tuesday. Opportunity came upon the meteorite last week while it was taking a look at a spacecraft shell that was jettisoned before landing after protecting the rover during its plunge through the martian atmosphere. Tests performed during the weekend confirm it is a nickel-iron meteorite, said Steve Squyres, a Cornell University scientist who is the principal investigator for NASA's Mars Exploration Rovers mission. I didn't see this one coming, Squyres said. I try very hard to anticipate the things that we might find and the things we might need to know, and be prepared for things, but an iron meteorite was not something that I was expecting. Whether or not other meteorites are found may help scientists determine whether the martian surface is being covered by wind-blown materials or whether surface material is being stripped away, Squyres said. Opportunity landed Jan. 24 on the Meridiani plains, halfway around the planet from where its twin, Spirit, set down in the Gusev Crater region on Jan. 3, 2004. Opportunity, a six-wheeled robot geologist, quickly discovered rocks showing that its area of Meridiani was once soaked in water, the major scientific finding of the twin-rover mission. After that it explored rocks in a deep crater and then went to conduct an engineering study of its jettisoned heat shield. The meteorite was sitting nearby. I've actually told the team that we probably shouldn't linger here long because this is obviously the place at Meridiani Planum where large metal objects fall from the sky, Squyres joked. The meteorite immediately appeared different from anything scientists had seen at either landing site. And then we looked at it with our infrared spectrometer and it looked like the martian sky, which is really weird, he said. The metal surface, he explained, was reflecting sky radiation instead of emitting much of its own. During the weekend, the rover drove to the meteorite and deployed its instrument arm to confirm its origin. The rover used its brush to remove dust but did not try to grind into the meteorite with its rock abrasion tool because of the outcome of a test conducted by the tool's maker, Honeybee Robotics of Manhattan. We contacted the meteorite department at the American Museum of Natural History in New York and they were generous enough to give us a piece of nickel-iron meteorite to try grinding into, and in like an hour of grinding we wore away about 25 percent of the grinding heads, Squyres said. We designed our rock abrasion tool for rock. We didn't design it for nickel-iron alloys. Scientists are not interested in the meteorite itself. Rather, they want to see if other objects spotted out on the Meridiani plains are also meteorites and what that might tell them about Mars. You've got sort of a steady rain of meteorites on to the martian surface. It's at a very slow rate, but they are going to accumulate over time. Squyres said. If sand is continually blowing in and being deposited on the surface, burying things and building up terrain over time, meteorites will be covered and few will be seen, he said. But if fine surface material is being continuously stripped away by the wind, coarse things like meteorites will be left behind and their accumulation will show. So whether you're seeing a net accumulation or a net burial of the meteorites is going to tell you something about what the erosion or deposition rates are out on the plains, he said. __ 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] Deep Impact Imaged by Mt. Palomar Telescope
http://www.nasa.gov/mission_pages/deepimpact/multimedia/deepimpact-palomar-224.html Deep Impact on Its Way [Image] Deep Impact seen from Mt. Palomar telescope This Jan. 13 photograph was taken by Mt Palomar's 200-inch telescope as the Deep Impact spacecraft was at a distance of about 260,000 kilometers (163,000 miles) from Earth and moving at a speed of about 16,000 kilometers per hour (10,000 miles per hour). The high speed of the spacecraft causes it to appear as a long streak across the sky in the constellation Virgo during the 10-minute exposure time of the image. The spacecraft will travel to comet Tempel 1 and release an impactor, creating a crater on the surface of the comet. Scientists believe the exposed materials may give clues to the formation of our solar system. Image credit: NASA/JPL/Caltech + Higher resolution image http://photojournal.jpl.nasa.gov/catalog/PIA07266 __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] NASA Rover about to make a BIG mistake
Yes, we need to scratch that rock. They could make it the last act the rover performs. Just think...minutes away from final failure of the solar panels... a race against time to upload the final commands to just scratch the surface... the command is sent.. across the gulf of space (sorry, digressing to the War of the Worlds)...the arm extends...contact... spins...retracts...the mass spectrometer does it's thing...the data comes in...kamacite...taenite... trace elements... then silence...forever ...and meteorite enthusists the world over bow their heads in reverence. Seriously, if we can sacrifice the Clementine spacecraft at the end of it's useful lifespan to try to kick up some ice in a cold crater at the south pole of the moon (an unplanned experiment with negative results) we can certainly sacrifice the RAT on the rover for this noble cause. -Walter __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Odds of finding a meteorite on Mars
Hi Jim/List, When you consider infintesimal the odds of finding a meteorite here on Earth after traversing as short a distance as the rovers have, you have to ask whether there are local factors on Mars which dramatically increase the number of meteorites per square kilometer on the surface there. The odds of finding a meteorite on Earth after travelling a couple miles aren't infinitesimal -- they're actually pretty good if you're looking in the right kinds of places. (It takes me on average about 5 hours of walking to find a meteorite. At an average of 2.5 miles per hour, that's a meteorite per linear 20 km.) While the right kinds of places on earth are few and far between, pretty much the entire surface of Mars is the right kind of place: old surfaces, dry conditions, no vegetation ;-). Some areas of Mars (as on earth) are even better: minimal native rocks. Opportunity is in such a region. I'm still surprised by the SIZE of the find, and that it's an iron rather than a chondrite. No telling how many chondrites the rovers have driven by... --Rob __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] I have a meteorite
Photo E-mail Play slideshow | Download images I have an iron meteorite, found near the Great Salt Lake, Toole, UT over 20 years ago by my brother. I don't know if it is valuable, I guess not these days, but I was wondering what I could do with it besides use it as a paperweight. Hehe, just a joke. The kids are using it for show and tell at school. It looks like it is rusting away though. It is the size of a golf ball, 50 cc, weighs 13.4 oz. I have a photo. Let me know if it doesn't go through: http://www.geocities.com/kristiehallnoats/ebay_auctions.htmlCourage is fear that has said its prayers. This MSN Photo E-mail slideshow will be available for 30 days.To share high quality pictures with your friends and family using MSN Photo E-mail, join MSN. photosHeaderCamera.jpgphotosHeaderLogo.jpg19.jpg__ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] I have a meteorite
Dear Kris; We are not allowed to post pictures directly to the list I would ask you how you know it is an iron meteorite, obviously you have had it authenticated by a meteorite person and not a well meaning geologist, a wanta-be science teacher, or a well meaning grandma that actually saw it fall and catch the desert on fire.Your average rock hound, although armed with knowledge, may be a danger to the process. Get it classified then call it a meteorite, just my opinion. Sure looks like an iron mill ball, or a rusty ball bearing from the photo. Dave Freeman Wyoming Meteorite Recovery Team Leader Rock Springs, Wyoming Kris Woolley wrote: cid:[EMAIL PROTECTED] cid:[EMAIL PROTECTED] Photo E-mail Play slideshow http://photos.msn.com/Viewing/Album.aspx?PST=8nK2AN1B%211JkYezkeWQp2Z1KoiIh3JVfZ9cXyQqsxwwGZVa8vGkMZvW0dZtu1M*fWzxLw0HTaTVceK*k0Wx%21dw%24%24 | Download images http://photos.msn.com/viewing/Photos.aspx?pi_Type=SlideshowTaskTask=DownloadstppData=pi_ImagesOnly=1Folder=nBuRgwTGIGiVKWz%21tWcvyQuI4bRpTXZQT01YZzYflMo%24User=r1TFiPhDLueq2R4eFb3fIgNfrbJTYMw2pi_NoLogin=1 I have an iron meteorite, found near the Great Salt Lake, Toole, UT over 20 years ago by my brother. I don't know if it is valuable, I guess not these days, but I was wondering what I could do with it besides use it as a paperweight. Hehe, just a joke. The kids are using it for show and tell at school. It looks like it is rusting away though. It is the size of a golf ball, 50 cc, weighs 13.4 oz. I have a photo. Let me know if it doesn't go through: cid:[EMAIL PROTECTED] http://photos.msn.com/Viewing/Album.aspx?PST=8nK2AN1B%211JkYezkeWQp2Z1KoiIh3JVfZ9cXyQqsxwwGZVa8vGkMZvW0dZtu1M*fWzxLw0HTaTVceK*k0Wx%21dw%24%24 http://www.geocities.com/kristiehallnoats/ebay_auctions.html Courage is fear that has said its prayers. This MSN Photo E-mail slideshow will be available for 30 days. To share high quality pictures with your friends and family using MSN Photo E-mail, join MSN http://g.msn.com/0PHenus1/29 . __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list Part 1.2 Content-Type: text/plain Content-Encoding: 7bit __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] I have a meteorite
Hi Kris and list; I don't want to rain on anyone's parade, but your iron meteorite sure looks like a mill ball to me. I have a coffee can full of them that look just like your picture. I got so excited finding those little iron meteorites until I sent a couple of them off to the university . Sorry Charlie! Mill balls were commonly used to crush gold and silver bearing ore in the late 19th and early 20th century. Any place there were mines you are likely find mill balls. Art Brasher --- Kris Woolley [EMAIL PROTECTED] wrote: I have an iron meteorite, found near the Great Salt Lake, Toole, __ 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
Re: [meteorite-list] I have a meteorite
Kris, Art, List; The mountains south of Toole will be loaded with mill balls. With the size of the mining that went on in a hundred mile area of the Great Salt Lake, and of the mountainous areas near there, the probability of more mill balls is really high. From the third quarter of the 1800's, mining was more intense in this part of the world than possibly anywhere else, except Nevada, Colorado, and possibly California.. Many KUED TV (Salt Lake City) specials have aired showing the great mining episodes of the area. Copper was king, building stone made Salt Lake City a real city, not just a wood structure town. Even if not mining related mill ball, The industrial complexes of the last 100 years would produce ball bearings and the military influence there would create a multitude of iron spheres to be propelled, or dropped, or exploded, or used for load bearing surfaces. Meteorite, slim chance Dave F. thornysahuaro wrote: Hi Kris and list; I don't want to rain on anyone's parade, but your iron meteorite sure looks like a mill ball to me. I have a coffee can full of them that look just like your picture. I got so excited finding those little iron meteorites until I sent a couple of them off to the university . Sorry Charlie! Mill balls were commonly used to crush gold and silver bearing ore in the late 19th and early 20th century. Any place there were mines you are likely find mill balls. Art Brasher --- Kris Woolley [EMAIL PROTECTED] wrote: I have an iron meteorite, found near the Great Salt Lake, Toole, __ 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 mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Odds of finding a meteorite on Mars
Rob; You forgot one other condition that makes Mars a prime area for finding meteorites ... you have never hunted there!! ;^ Best Regards, Art __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] NASA Rover Finds Meteorite on Surface of Mars
I told my wife they had found a new meteorite - on Mars! Her immediate response was No, you can't go to Mars.I was so hoping to get to go :-( -- Eric Olson ELKK Meteorites http://www.star-bits.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] NASA Rover Finds Meteorite on Surface of Mars
I told my wife they had found a new meteorite - on Mars! Her immediate response was No, you can't go to Mars.I was so hoping to get to go :-( Eric, I spent many years as a married man, just take the day off of work, tell her your going to be working late and go! That should give you time to get there and back if you hurry! Make sure you dust of BEFORE you get home, the red dust will give you away! Don't let a woman keep you tied down! : ) Thanks, Tom peregrineflier IMCA 6168 http://www.frontiernet.net/~peregrineflier/Peregrineflier.htm - Original Message - From: [EMAIL PROTECTED] To: meteorite-list@meteoritecentral.com Sent: Tuesday, January 18, 2005 9:34 PM Subject: Re: [meteorite-list] NASA Rover Finds Meteorite on Surface of Mars I told my wife they had found a new meteorite - on Mars! Her immediate response was No, you can't go to Mars.I was so hoping to get to go :-( -- Eric Olson ELKK Meteorites http://www.star-bits.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] NASA Rover Finds Meteorite on Surface of Mars
Back to the ventifact markings on the Martian rock... There is no a priori reason why an iron meteorite can't be ventifacted. I have never seen one though... I have seen ventifacted chondrites - no sharp delineations... But has anyone ever seen a ventifacted iron here on Earth? If so, can you link us to some photos? Actually, photos of any ventifacted iron on Earth would be useful for comparison. Cheers, Nick __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] ventifacted iron on Earth
Dear List; If any would like a picture of a banded iron of 2.87 byo that is ventifacted and has been glaciated, ask me and I will send a picture or two. Best, DAve Freeman mjwy __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] test delete
Test message. Please delete. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Odds of finding a meteorite on Mars
Hi, Everybody, To determine the odds, first you have to calculate the surface area that has been sampled by both rovers. The rovers were meant to only move a few hundred meters, but Spirit had racked up 4030 meters of odometry in 366 sols and Opportunity has covered 2000 meters or so. Assuming that each rover has a useful sidelong glance of 75 to 100 meters to either side of their route in which they would be able to spot a meteorite and allowing for some track reversals and turns, the total area surveyed by the two rovers is probably about one square kilometer. So the find rate is one big iron per square kilometer! Why a rare iron instead of a stone? Well, we don't have a sampling of the meteoroid streams that intersect with Mars, as we do for the Earth. Perhaps the Martian orbital environment contains meteoroid streams that contain more irons. Or it could merely be that an iron meteorite has a very much longer survival lifetime in Martian conditions than a stone meteorite. But clearly some of the reasons we found this one are: 1) it's about as big a chunk as could survive to reach the surface of Mars (size matters), 2) it's positioned on top of a bare stretch of soil (sand?) where it sticks out like a sore thumb, 3) this iron looks like an iron whereas a stone meteorite would look like, well, a stone and gosh! there sure are plenty of rocks on Mars, and 4) we discovered it while we were specifically looking for chunks (of heat shield, it's true, but we were looking). Why does it look shiny? Imagine being sandblasted by Martian dust storms for 500,000 years. You'd be pretty well cleaned off, my guess... Yes, the Martian atmosphere is thin and the high velocity winds do not pack the punch of a wind in a denser atmosphere and the dust is very fine, but try putting an iron meteorite in your rock tumbler with plenty of very fine sand and running it for 500,000 years. I think it would polish up nicely... The bright appearance of this iron suggests that environmental alteration by the rare presence of water or oxygen does not proceed as fast as aeolian abrasion, if it occurs at all. There is plentiful evidence for aeolian erosion on Mars. Remember the pyramids of Elysium? Why no crust? Iron meteorites do not form a thick fusion crust. They acquire a very thin skin of black magnetite from thermally forced oxidation. But the Martian atmosphere does not contains any appreciable amount of free oxygen, so magnetite probably does not form on a Martian iron. However, if it has been polished clean by dust storms, any thin surface alteration would have been abraded away anyway. The actual number of Martian meteorites per square kilometer is a function of both the fall rate and the survival rate. At the moment, we are no position to dis-entangle the two factors. But instinct tells me the survival rate is high. I got an email from Beda Hofmann, who wrote: I assume there should be many small meteorites on the MER rover images Besides the new object I have seen at least 2 candidates. Beda, can you post links to those MER images with candidate meteorites? We can all go meteorite hunting on Mars! This discovery makes me want to go back over the images again... Since this object is at the large end of the range we could expect to find (15 cm?), by the power law there should be in the same statistical area roughly ten objects 1/3 rd that size (5 cm), and so forth. And lastly, Doug, I've got to ask! Why would Martian tektites be strawberry pink??? Inquiring minds want to know... Sterling K. Webb -- Matson, Robert wrote: Hi Jim/List, When you consider infintesimal the odds of finding a meteorite here on Earth after traversing as short a distance as the rovers have, you have to ask whether there are local factors on Mars which dramatically increase the number of meteorites per square kilometer on the surface there. The odds of finding a meteorite on Earth after travelling a couple miles aren't infinitesimal -- they're actually pretty good if you're looking in the right kinds of places. (It takes me on average about 5 hours of walking to find a meteorite. At an average of 2.5 miles per hour, that's a meteorite per linear 20 km.) While the right kinds of places on earth are few and far between, pretty much the entire surface of Mars is the right kind of place: old surfaces, dry conditions, no vegetation ;-). Some areas of Mars (as on earth) are even better: minimal native rocks. Opportunity is in such a region. I'm still surprised by the SIZE of the find, and that it's an iron rather than a chondrite. No telling how many chondrites the rovers have driven by... --Rob __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Odds of finding a meteorite on Mars
Hi, Everybody,
{Sorry about the defective text editor. Try again.}
To determine the odds, first you have to calculate
the surface area that has been sampled by both rovers.
The rovers were meant to only move a few hundred
meters, but Spirit had racked up 4030 meters of
odometry in 366 sols and Opportunity has covered 2000
meters or so.
Assuming that each rover has a useful sidelong
glance of 75 to 100 meters to either side of their
route in which they would be able to spot a meteorite
and allowing for some track reversals and turns, the
total area surveyed by the two rovers is probably
about one square kilometer.
So the find rate is one big iron per square
kilometer!
Why a rare iron instead of a stone? Well, we don't
have a sampling of the meteoroid streams that intersect
with Mars, as we do for the Earth. Perhaps the Martian
orbital environment contains meteoroid streams that
contain more irons. Or it could merely be that an iron
meteorite has a very much longer survival lifetime in
Martian conditions than a stone meteorite.
But clearly some of the reasons we found this one
are: 1) it's about as big a chunk as could survive to
reach the surface of Mars (size matters), 2) it's
positioned on top of a bare stretch of soil (sand?)
where it sticks out like a sore thumb, 3) this iron
looks like an iron whereas a stone meteorite would
look like, well, a stone and gosh! there sure are
plenty of rocks on Mars, and 4) we discovered it
while we were specifically looking for chunks (of
heat shield, it's true, but we were looking).
Why does it look shiny? Imagine being sand
blasted by Martian dust storms for 500,000 years.
You'd be pretty well cleaned off, my guess...
Yes, the Martian atmosphere is thin and the high
velocity winds do not pack the punch of a wind in
a denser atmosphere and the dust is very fine,
but try putting an iron meteorite in your rock
tumbler with plenty of very fine sand and running
it for 500,000 years. I think it would polish up
nicely...
The bright appearance of this iron suggests that
environmental alteration by the rare presence of
water or oxygen does not proceed as fast as aeolian
abrasion, if it occurs at all. There is plentiful
evidence for aeolian erosion on Mars. Remember the
pyramids of Elysium?
Why no crust? Iron meteorites do not form a thick
fusion crust. They acquire a very thin skin of black
magnetite from thermally forced oxidation. But the
Martian atmosphere does not contains any appreciable
amount of free oxygen, so magnetite probably does not
form on a Martian iron.
However, if it has been polished clean by dust
storms, any thin surface alteration would have been
abraded away anyway.
The actual number of Martian meteorites per square
kilometer is a function of both the fall rate and the
survival rate. At the moment, we are no position to
dis-entangle the two factors. But instinct tells me
the survival rate is high.
I got an email from Beda Hofmann, who wrote: I
assume there should be many small meteorites on the
MER rover images Besides the new object I have
seen at least 2 candidates.
Beda, can you post links to those MER images with
candidate meteorites? We can all go meteorite hunting
on Mars! This discovery makes me want to go back over
the images again...
Since this object is at the large end of the range
we could expect to find (15 cm?), by the power law
there should be in the same statistical area roughly
ten objects 1/3 rd that size (5 cm), and so forth.
And lastly, Doug, I've got to ask! Why would Martian
tektites be strawberry pink??? Inquiring minds want
to know...
Sterling K. Webb
--
Matson, Robert wrote:
Hi Jim/List,
When you consider infintesimal the odds of finding a meteorite
here on Earth after traversing as short a distance as the rovers
have, you have to ask whether there are local factors on Mars
which dramatically increase the number of meteorites per square
kilometer on the surface there.
The odds of finding a meteorite on Earth after travelling a couple
miles aren't infinitesimal -- they're actually pretty good if you're
looking in the right kinds of places. (It takes me on average about
5 hours of walking to find a meteorite. At an average of 2.5 miles
per hour, that's a meteorite per linear 20 km.) While the right
kinds of places on earth are few and far between, pretty much the
entire surface of Mars is the right kind of place: old surfaces,
dry conditions, no vegetation ;-).
Some areas of Mars (as on earth) are even better: minimal native
rocks. Opportunity is in such a region. I'm still surprised by
the SIZE of the find, and that it's an iron rather than a chondrite.
No telling how many chondrites the rovers have driven by...
--Rob
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Re: [meteorite-list] Odds of finding a meteorite on Mars
Sterling, didn't you hear? The Strawberry Fields home in the UK is getting closed, so they're clearly not forever. So with all those slick names that are being dreamt up, Strawberry Fields on Mars would be an appropiate tribute in my opinion and probably very appealing to the Ad hoc nomenclature committee of martian geography. And the opportunity to wake up to Beatles (but no other Bugs) on Mars after the search for nanoorganisms could be refreshing... Now, if you really want to know the scientific reason for the strawberry fields on Mars, statistically they've found all these blueberry fields, and I think Mars is a more fun place than Maine or New Jersey or whatever frigid place this time of year that has blueberries at some point. Also the Schiller Effect clearly would be tilted to the pink and I am sure even the iridescent olivine in the Al Mablas' there even would be preferentially glowing strawberry colored rainbows because it is of course proper to discuss color in its ambient natural conditions -on Mars. Then again maybe someone knows what configuration of excited d-orbitals in the Cromium, Vanadium would turn bright red in tektite glass after all that ultraviolet absorption going on in Mars...it may be far away but I haven't heard of any stratospheric ozone cloud filters on Mars. Does that get me off the hook or shall i continue:) (No please don't answer that except Sterling) By the way i totally disagree that the rovers have 75 to 100 meters of meteorite vision on Mars. I think any listmenber could do better than a rover, and I am personally lucky to have 5 meters each way with all those rocks around and a superior neck and rods and cones than the pancam...Though the rest of your post was great. Just think, that poor meteorite that NASA is giving the cold shoulder instead of spirit and opportunity must really think Earth is invading (gracias H.G. Walter and soon Tom Cruise). It saw one Rover in its square field, so it must think that there are about a thousand million Earth machines drilling holes in the heads of all the rocks on mars... En un mensaje con fecha 01/19/2005 12:31:05 AM Mexico Standard Time, [EMAIL PROTECTED] escribe: And lastly, Doug, I've got to ask! Why would Martian tektites be strawberry pink??? Inquiring minds want to know... __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
