Re: [meteorite-list] Acapulcoite/Lodranite Parent-body
Wow... thanks for all of those references and for the info below Jason. And thanks also to everyone else who replied both on and off list with their helpful input. It's very much appreciated! Thanks, Jeff - Original Message - From: Jason Utas meteorite...@gmail.com To: Meteorite-list meteorite-list@meteoritecentral.com; Jeff Kuyken i...@meteorites.com.au Sent: Tuesday, July 20, 2010 1:54 PM Subject: Re: [meteorite-list] Acapulcoite/Lodranite Parent-body Hello Jeff, There is a great deal of literature online that addresses this topic -- in addition to the McCoy research. The general consensus is that the Acapulcoite/Lodranite parent body was heterogeneously metamorphosed (impact-melted or partially-differentiated, depending on which paper you read) and was then largely broken up by an impact(s) nearly 4.6 billion years ago. Lodranites and Acapulcoites have been differentiated in the past almost solely based on structural observations/grain size. The trouble is that the cutoff between the two has traditionally been determined by grain size and is not clearly defined - check out the discussion section of this paper (also in the list of sources below) for a good summary: http://www.lpi.usra.edu/meetings/LPSC98/pdf/1237.pdf Here's the meat of it: Acapulcoites experienced only low degrees of Fe,Ni- FeS cotectic melting and have maintained essentially chondritic troilite and plagioclase abundances, whereas lodranites experienced higher degrees of melting that included partial silicate melting with subsequent loss of troilite and/or plagioclase fractions. If you keep reading through the discussion, you'll find that the authors call at least a few of McCoy's analyses into question because they haven't been as mineralogically metamorphosed as their large grain size would seemingly suggest. In other words, they're large-grained acapulcoites. Or maybe they're transitional. It just depends on how you want to break things up. It's another example of how meteoritics is still a science begging for a better classification system. Do we use the degree of metamorphosis or grain size to determine the class? Who knows... Here are some related docs about the classes and parent body - the first one [ending with 1237.pdf] was the one I noted above: http://www.lpi.usra.edu/meetings/LPSC98/pdf/1237.pdf http://www.lpi.usra.edu/meetings/metsoc97/pdf/5200.pdf http://aaa.wustl.edu/Work/pub_files/acapulcoite_lodranite.html http://www.sciencedirect.com/science?_ob=ArticleURL_udi=B6V66-3SVR613-1M_user=10_coverDate=02%2F28%2F1997_rdoc=1_fmt=high_orig=search_sort=d_docanchor=view=c_acct=C50221_version=1_urlVersion=0_userid=10md5=eaea4c9e7fbd30d2ba053bedb0883412 http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20060024503_2006090520.pdf http://adsabs.harvard.edu/abs/2009M%26PS...44.1151C http://cat.inist.fr/?aModele=afficheNcpsidt=16823360 http://www.sciencedirect.com/science?_ob=ArticleURL_udi=B6WGF-45FCNK6-5_user=10_coverDate=11%2F30%2F2000_rdoc=1_fmt=high_orig=search_sort=d_docanchor=view=c_acct=C50221_version=1_urlVersion=0_userid=10md5=7f6c0ded981b140af26e95baafd2d055 http://www4.nau.edu/meteorite/Meteorite/Book-PrimitiveAchond.html Regards, Jason Utas On Mon, Jul 19, 2010 at 8:15 PM, al mitt alm...@kconline.com wrote: Hi Jeff, Here is what McSween has to say about these two classes. Distinct in appearance but form a coherent group with continuously varying characteristics. They share simular mineralogies, both being composed largely of olivine and pyroxene, with minor plagioclase, iron-nickel metal, and troilite. They have similar oxygen isotopic composition, however they don't define a clear mass-fractionation line. He states that Tim McCoy and colleges shown that the acapuloite-lodranite achondites represent sesidues from varying degrees of partial melting of chondrites, ranging from less than 1% to as great as 25%. It is thought that the lodranite material formed deeper in the parent body, and rising melts generated from them passed through fractures in the overlying acapulites on the way to the surface. An age of 4.56 billion years has been determained for the Acapulco-lodranite parent body from percise lead isotop chronometer. Partial melting occured shortly after accretion. Spectra of acapulcoites are similar to those of ordinary chondrites and lodranites have spectra similar to a variety of S subtype asteroids, suggestions include S(III), S(IV), and S(V) depending on the amount of melt extracted. --AL Mitterling - Original Message - From: Jeff Kuyken To: Meteorite List Sent: Monday, July 19, 2010 7:23 AM Subject: [meteorite-list] Acapulcoite/Lodranite Parent-body Hi all, Does anyone know enough about the Acapulcoite/Lodranite Parent-body to know what the main differences between the classifications are? Is it just the grain size or is there a composition difference etc too? Any paper references would be appreciated. Thanks, Jeff
[meteorite-list] AD - 54 Auctiosn Ending Today - GREAT STUFF!
Dear List Members, I have 54 auctions ending this afternoon, all started at just 99 cents with no reserve. Please take a look if you have time as you will find several bargains. I also have a set ending Sunday. I will be traveling at the end of the month is the reason I have some auctions ending Sunday instead of next Tuesday. This gives me a few extra days to ship everything before I leave. All Auctions Can Be Found At This link: http://shop.ebay.com/merchant/raremeteorites!_W0QQ_nkwZQQ_armrsZ1QQ_fromZQQ_mdoZ Thank you for looking and if you are bidding, good luck. Best Regards, Adam Hupe The Hupe Collection Team LunarRock IMCA 2185 raremeteori...@yahoo.com __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Putting it all in perspective
http://www.planetary.org/blog/article/2585/ __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] AD - NWA 4222 rare martial meteorite low TKW
I have put 2 slices of NWA 4222 martian meteorite, this material its many rare seen the low TKW of the meteorite. I have cut the 2 slices from the main mass present in my collection and this is the last 2 slices I cut from this, if you want go here http://members.ebay.com/ws/eBayISAPI.dll?ViewUserPageuserid=mcomemeteorite Matteo M come Meteorite Meteoriti i...@mcomemeteorite.it http://www.mcomemeteorite.it http://www.mcomemeteorite.org Mindat Gallery http://www.mindat.org/gallery-5018.html ChinellatoPhoto Servizi Fotografici http://www.chinellatophoto.com __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Video Camera Will Show Mars Rover's Touchdown (MSL)
http://www.jpl.nasa.gov/news/news.cfm?release=2010-239 Video Camera Will Show Mars Rover's Touchdown Jet Propulsion Laboratory July 19, 2010 A downward-pointing camera on the front-left side of NASA's Curiosity rover will give adventure fans worldwide an unprecedented sense of riding a spacecraft to a landing on Mars. The Mars Descent Imager, or MARDI, will start recording high-resolution video about two minutes before landing in August 2012. Initial frames will glimpse the heat shield falling away from beneath the rover, revealing a swath of Martian terrain below illuminated in afternoon sunlight. The first scenes will cover ground several kilometers (a few miles) across. Successive images will close in and cover a smaller area each second. The full-color video will likely spin, then shake, as the Mars Science Laboratory mission's parachute, then its rocket-powered backpack, slow the rover's descent. The left-front wheel will pop into view when Curiosity extends its mobility and landing gear. The spacecraft's own shadow, unnoticeable at first, will grow in size and slide westward across the ground. The shadow and rover will meet at a place that, in the final moments, becomes the only patch of ground visible, about the size of a bath towel and underneath the rover. Dust kicked up by the rocket engines during landing may swirl as the video ends and Curiosity's surface mission can begin. All of this, recorded at about four frames per second and close to 1,600 by 1,200 pixels per frame, will be stored safely into the Mars Descent Imager's own flash memory during the landing. But the camera's principal investigator, Michael Malin of Malin Space Science Systems, San Diego, and everyone else will need to be patient. Curiosity will be about 250 million kilometers (about 150 million miles) from Earth at that point. It will send images and other data to Earth via relay by one or two Mars orbiters, so the daily data volume will be limited by the amount of time the orbiters are overhead each day. We will get it down in stages, said Malin. First we'll have thumbnails of the descent images, with only a few frames at full scale. Subsequent downlinks will deliver additional frames, selected based on what the thumbnail versions show. The early images will begin to fulfill this instrument's scientific functions. I am really looking forward to seeing this movie. We have been preparing for it a long time, Malin said. The lower-resolution version from thumbnail images will be comparable to a YouTube video in image quality. The high-definition version will not be available until the full set of images can be transmitted to Earth, which could take weeks, or even months, sharing priority with data from other instruments. The Mars Descent Imager will provide the Mars Science Laboratory team with information about the landing site and its surroundings. This will aid interpretation of the rover's ground-level views and planning of initial drives. Hundreds of the images taken by the camera will show features smaller than what can be discerned in images taken from orbit. Each of the 10 science instruments on the rover has a role in making the mission successful, said John Grotzinger of the California Institute of Technology in Pasadena, chief scientist for the Mars Science Laboratory. This one will give us a sense of the terrain around the landing site and may show us things we want to study. Information from these images will go into our initial decisions about where the rover will go. The nested set of images from higher altitude to ground level will enable pinpointing Curiosity's location even before an orbiter can photograph the rover on the surface. Malin said, Within the first day or so, we'll know where we are and what's near us. MARDI doesn't do much for six-month planning -- we'll use orbital data for that -- but it will be important for six-day and 16-day planning. In addition, combining information from the descent images with information from the spacecraft's motion sensors will enable calculating wind speeds affecting the spacecraft on its way down, an important atmospheric science measurement. The descent data will later serve in designing and testing future landing systems for Mars that could add more control for hazard avoidance. After landing, the Mars Descent Imager will offer the capability to obtain detailed images of ground beneath the rover, for precise tracking of its movements or for geologic mapping. The science team will decide whether or not to use that capability. Each day of operations on Mars will require choices about how to budget power, data and time. Last month, spacecraft engineers and technicians re-installed the Mars Descent Imager onto Curiosity for what is expected to be the final time, as part of assembly and testing of the rover and other parts of the Mars Science Laboratory flight system at NASA's Jet Propulsion Laboratory, Pasadena, Calif. Besides the rover itself, the
[meteorite-list] Cassini Sees Moon Building Giant Snowballs in Saturn Ring
http://www.jpl.nasa.gov/news/news.cfm?release=2010-240 Cassini Sees Moon Building Giant Snowballs in Saturn Ring Jet Propulsion Laboratory July 20, 2010 While orbiting Saturn for the last six years, NASA's Cassini spacecraft has kept a close eye on the collisions and disturbances in the gas giant's rings. They provide the only nearby natural laboratory for scientists to see the processes that must have occurred in our early solar system, as planets and moons coalesced out of disks of debris. New images from Cassini show icy particles in Saturn's F ring clumping into giant snowballs as the moon Prometheus makes multiple swings by the ring. The gravitational pull of the moon sloshes ring material around, creating wake channels that trigger the formation of objects as large as 20 kilometers (12 miles) in diameter. Scientists have never seen objects actually form before, said Carl Murray, a Cassini imaging team member based at Queen Mary, University of London. We now have direct evidence of that process and the rowdy dance between the moons and bits of space debris. Murray discussed the findings today (July 20, 2010) at the Committee on Space Research meeting in Bremen, Germany, and they are published online by the journal Astrophysical Journal Letters on July 14, 2010. A new animation based on imaging data shows how one of the moons interacts with the F ring and creates dense, sticky areas of ring material. Saturn's thin, kinky F ring was discovered by NASA's Pioneer 11 spacecraft in 1979. Prometheus and Pandora, the small shepherding moons on either side of the F ring, were discovered a year later by NASA's Voyager 1. In the years since, the F ring has rarely looked the same twice, and scientists have been watching the impish behavior of the two shepherding moons for clues. Prometheus, the larger and closer to Saturn of the two moons, appears to be the primary source of the disturbances. At its longest, the potato-shaped moon is 148 kilometers (92 miles) across. It cruises around Saturn at a speed slightly greater than the speed of the much smaller F ring particles, but in an orbit that is just offset. As a result of its faster motion, Prometheus laps the F ring particles and stirs up particles in the same segment once in about every 68 days. Some of these objects will get ripped apart the next time Prometheus whips around, Murray said. But some escape. Every time they survive an encounter, they can grow and become more and more stable. Cassini scientists using the ultraviolet imaging spectrograph previously detected thickened blobs near the F ring by noting when starlight was partially blocked. These objects may be related to the clumps seen by Murray and colleagues. The newly-found F ring objects appear dense enough to have what scientists call self-gravity. That means they can attract more particles to themselves and snowball in size as ring particles bounce around in Prometheus's wake, Murray said. The objects could be about as dense as Prometheus, though only about one-fourteenth as dense as Earth. What gives the F ring snowballs a particularly good chance of survival is their special location in the Saturn system. The F ring resides at a balancing point between the tidal force of Saturn trying to break objects apart and self-gravity pulling objects together. One current theory suggests that the F ring may be only a million years old, but gets replenished every few million years by moonlets drifting outward from the main rings. However, the giant snowballs that form and break up probably have lifetimes of only a few months. The new findings could also help explain the origin of a mysterious object about 5 to 10 kilometers (3 to 6 miles) in diameter that Cassini scientists spotted in 2004 and have provisionally dubbed S/2004 S 6. This object occasionally bumps into the F ring and produces jets of debris. The new analysis fills in some blanks in our solar system's history, giving us clues about how it transformed from floating bits of dust to dense bodies, said Linda Spilker, Cassini project scientist at NASA's Jet Propulsion Laboratory in Pasadena, Calif. The F ring peels back some of the mystery and continues to surprise us. The late Kevin Beurle was made the honorary first author on this paper because of his contributions in developing software and designing observation sequences for this research. He died in 2009. The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. JPL, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo. For more information, visit: http://www.nasa.gov/cassini and http://saturn.jpl.nasa.gov Jia-Rui C. Cook 818-354-0850 Jet
[meteorite-list] Mars Sample Return Mission Could Begin in 2018
http://www.spaceflightnow.com/news/n1007/20sample/ Mars sample return mission could begin in 2018 BY STEPHEN CLARK SPACEFLIGHT NOW July 20, 2010 Space officials in the United States and Europe are planning an ambitious dual-rover mission that could start collecting Martian soil samples in 2018 to be picked up by a subsequent mission and returned to Earth in the 2020s. The costly mission would blast off on an Atlas 5 rocket in 2018 and land two rovers on Mars with a single sky crane descent system that will be tested for the first time at the Red Planet in August 2012. It would be the first time two rovers will be delivered to the same landing site on Mars. The European Space Agency's ExoMars rover and a $2 billion NASA Mars Astrobiology Explorer-Cacher mission are the leading candidates for the tandem project. ExoMars carries a drill to burrow into the Mars subsurface and retrieve samples from as deep as six feet underground. Some of that soil could be placed inside a high-tech storage device on NASA's rover for eventual return to Earth, according to Doug McCuistion, head of the agency's Mars exploration program. There may be a possibility to actually cache subsurface samples that the ExoMars drill collects, which had not been in our plans before, McCuistion said in an interview last week. Marcello Coradini, ESA's coordinator for solar system missions, confirmed the studies of placing underground samples into a NASA cache for later retrieval. We're hoping that what we do with our rover is actually collect the samples that we will then go back in the 2020s to retrieve in the Mars sample return campaign, McCuistion said. A simple sample cache was originally planned for NASA's Mars Science Laboratory launching next year, but officials removed the payload due to scientific and technical concerns, according to McCuistion. Spacecraft traveling from Earth to Mars can only launch about every 26 months, limiting sample return options. Scientists agree the best strategy is to spread the effort across three missions to spread the high cost of the endeavor among several years. By breaking it up into those three pieces, you can sort of thread the costs and spread some of the risks over multiple missions and make the overall program both more robust and more affordable, said Steve Squyres, a Cornell University researcher leading an independent review of potential NASA science missions. Called the decadal survey, the review will rank the scientific value of 28 proposed missions for the next 10 years. The ultimate timing of a sample return campaign will boil down to the budget of both NASA and ESA, McCuistion said. David Southwood, ESA's director of science and robotic exploration, said kicking off a sample return campaign by 2020 would mean going above the 200 million (euros) a year we're assuming as a steady-state (budget) in the late part of this decade. Squyres said the decadal survey will attempt to settle on an estimated total cost for three sample return missions. Recent cost projections have pegged the effort's total price at more than $5 billion. (The sample return missions) could be spaced as close as close as three consecutive opportunities, McCuistion said. We believe that budgets will probably require some distance between them. The Europeans will share some of those mission responsibilities with us, so we're thinking the gap between launches could be shrunk significantly. Planners haven't decided on a schedule for the sample's return to Earth, and it's possible the the precious soil could wait for up to six years -- or even longer -- before NASA and ESA can afford to send a mission to bring it back. One sample return option involves launching the caching mission in 2018, skipping a launch opportunity in 2020, then sending the an orbiter to Mars in 2022 that would ferry the cargo back to Earth, according to McCuistion. Another mission could fly in 2024 to fetch the samples from the 2018 landing site and launch the cache into orbit around Mars, where it would dock with the return orbiter and begin the journey home. But that's just one strategy. The results of the decadal survey report, which is due in March 2011, will also factor into NASA's decision on when to insert a Mars sample return campaign into its packed mission portfolio. We still have a long way to go in design work, but the concepts that we're working right now look promising, McCuistion said. It's going to rest mainly on budgets and what the decadal survey comes back and says. One competitor for scarce NASA planetary science funding in the 2020s is a $4.5 billion flagship mission to Jupiter, another joint undertaking between NASA and ESA. The Jupiter mission would include a pair of orbiters on two separate launches in 2020. The decadal survey's ranking of the Jupiter flagship mission and Mars sample return will likely decide which project launches first. If the decadal survey comes back and says outer planets flagship
[meteorite-list] Las Canas achondrite
I am trying to find some information on a meteorite we have in our collection. I have a 0.3 g crusted fragment of an achondrite, possibly eucrite, and old label that reads Las Canas, St. Andras, Cuba, 2. Oct 1844. Is this a valid meteorite, fall?? Thanks Laurence Garvie CMS ASU __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] AD: Short Note - Last 6 small pieces of the sensational NWA 6162 prov. Martian
Dear list members, reading Ron's last posting below, it seems, that in some years we'll get some competition by NASA and ESA. Was already there, Said the hedgehog to the hare... Now seriously, we're about to distribute the very last six samples of the best shergottite. When they'll be gone, then NWA 6162 prov. unfortunately will be already history. To try to do justice to that material in a hyperventilating staccato of superlatives would fail, just click instead on these pictures given in this link again to get a vague impression. http://www.rocksfromspace.org/June_12_2010.html It is stunning and it is breathtaking. Ask those, who already have their specimen home or in the lab. The only alternatives of comparable freshness among the shergottites to NWA 6162 are Zagami and Shergotty. But NWA 6162 is somewhat more eye-appealing. I hope we have now supplied all Martian-complete-collectors. These are the last 3 grams of the 89g stone. We currently have 5 partslices left - all with a long fusion-crusted edge: 0.290g 0.398g 0.415g 0.437g 0.450g As well as a partial endcut with especially much of the fantastic crust 0.916g Email for (moderate) prices and pictures. And don't forget to take a look to the Western evening sky and the planetary theatre we have these days there going on; also to see, where your specimen really comes from! Best greetings, Martin Stefan Chladni's Heirs Munich - Berlin Fine Meteorites for Science Collectors http://www.chladnis-heirs.com -Ursprüngliche Nachricht- Von: meteorite-list-boun...@meteoritecentral.com [mailto:meteorite-list-boun...@meteoritecentral.com] Im Auftrag von Ron Baalke Gesendet: Dienstag, 20. Juli 2010 18:07 An: Meteorite Mailing List Betreff: [meteorite-list] Mars Sample Return Mission Could Begin in 2018 http://www.spaceflightnow.com/news/n1007/20sample/ Mars sample return mission could begin in 2018 BY STEPHEN CLARK SPACEFLIGHT NOW July 20, 2010 Space officials in the United States and Europe are planning an ambitious dual-rover mission that could start collecting Martian soil samples in 2018 to be picked up by a subsequent mission and returned to Earth in the 2020s. The costly mission would blast off on an Atlas 5 rocket in 2018 and land two rovers on Mars with a single sky crane descent system that will be tested for the first time at the Red Planet in August 2012. It would be the first time two rovers will be delivered to the same landing site on Mars. The European Space Agency's ExoMars rover and a $2 billion NASA Mars Astrobiology Explorer-Cacher mission are the leading candidates for the tandem project. ExoMars carries a drill to burrow into the Mars subsurface and retrieve samples from as deep as six feet underground. Some of that soil could be placed inside a high-tech storage device on NASA's rover for eventual return to Earth, according to Doug McCuistion, head of the agency's Mars exploration program. There may be a possibility to actually cache subsurface samples that the ExoMars drill collects, which had not been in our plans before, McCuistion said in an interview last week. Marcello Coradini, ESA's coordinator for solar system missions, confirmed the studies of placing underground samples into a NASA cache for later retrieval. We're hoping that what we do with our rover is actually collect the samples that we will then go back in the 2020s to retrieve in the Mars sample return campaign, McCuistion said. A simple sample cache was originally planned for NASA's Mars Science Laboratory launching next year, but officials removed the payload due to scientific and technical concerns, according to McCuistion. Spacecraft traveling from Earth to Mars can only launch about every 26 months, limiting sample return options. Scientists agree the best strategy is to spread the effort across three missions to spread the high cost of the endeavor among several years. By breaking it up into those three pieces, you can sort of thread the costs and spread some of the risks over multiple missions and make the overall program both more robust and more affordable, said Steve Squyres, a Cornell University researcher leading an independent review of potential NASA science missions. Called the decadal survey, the review will rank the scientific value of 28 proposed missions for the next 10 years. The ultimate timing of a sample return campaign will boil down to the budget of both NASA and ESA, McCuistion said. David Southwood, ESA's director of science and robotic exploration, said kicking off a sample return campaign by 2020 would mean going above the 200 million (euros) a year we're assuming as a steady-state (budget) in the late part of this decade. Squyres said the decadal survey will attempt to settle on an estimated total cost for three sample return missions. Recent cost projections have pegged the effort's total price at more than $5 billion. (The sample return missions) could be spaced as close as close
[meteorite-list] Meteorites and the physico-chemical conditions in the early solar
Hello Listers, Here is a great paper on the topic of meteorites in the early stages of the formation of the solar system. This paper covers alot from the formation of chrondrites, to the different types of classification and where these classes come from. Here is the ABSTRACT: Physics and Astrophysics of Planetary Systems, Les Houches 2008 Editors : will be set by the publisher EAS Publications series vol ? 2008 Meteorites and the physico-chemical conditions in the early solar nebula Jérôme Aléon1 Abstract. Chondritic meteorites constitute the most ancient rock record available in the laboratory to study the formation of the solar system and its planets. Detailed investigations of their mineralogy, petrography, chemistry and isotopic composition and comparison with other primitive solar system samples such as cometary dust particles have allowed through the years to decipher the conditions of formation of their individual components thought to have once been free-floating pieces of dust and rocks in the early solar nebula. When put in the context of astrophysical models of young stellar objects, chondritic meteorites and cometary dust bring essential insights on the astrophysical conditions prevailing in the very first stages of the solar system. Several exemples are shown in this chapter, which include (1) high temperature processes and the formation of chondrules and refractory inclusions, (2) oxygen isotopes and their bearing on photochemistry and large scale geochemical reservoirs in the nebula, (3) organosynthesis and cold cloud chemistry recorded by organic matter and hydrogen isotopes, (4) irradiation of solids by flares from the young Sun and finally (5) large scale transport and mixing of material evidenced in chondritic interplanetary dust particles and samples returned from comet Wild2 by the Stardust mission. For the whole paper click the link below: http://arxiv.org/ftp/arxiv/papers/0809/0809.1735.pdf Shawn Alan IMCA 1633 eBaystore http://shop.ebay.com/photophlow/m.html?_nkw=_armrs=1_from=_ipg=_trksid=p4340 __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
