Re: [meteorite-list] Meteorite-list Digest, Vol 117, Issue 19
On 2/15/13, meteorite-list-requ...@meteoritecentral.com wrote: > Send Meteorite-list mailing list submissions to > meteorite-list@meteoritecentral.com > > To subscribe or unsubscribe via the World Wide Web, visit > http://six.pairlist.net/mailman/listinfo/meteorite-list > or, via email, send a message with subject or body 'help' to > meteorite-list-requ...@meteoritecentral.com > > You can reach the person managing the list at > meteorite-list-ow...@meteoritecentral.com > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Meteorite-list digest..." > > > Today's Topics: > >1. $10K Tucson Gem Show Charity Raffle Tomorrow (Meteorite Men) >2. Re: Asteroid Hits Earth! How the Doomsday Scenario Would Play > Out (i...@moonmarsrocks.com) >3. FW: (meteorobs) [met-list] Moroc Long Duration Fireball with > smoketrail 13FEB2013 (Robert Verish) >4. Re: Germany/Belgium,Holland Long Duration Bolide 13FEB2013 > (Marco Langbroek) >5. Near-Earth Asteroid 2012 DA14 Makes Preview Appearance > (Ron Baalke) >6. At The Mouth of the Red Valley (Mars Express) (Ron Baalke) >7. Book of Australia/Wolf Creek Crater (h...@meteorhall.com) >8. Best. Fireball. Ever. (Rob Wesel) >9. Russian Meteor event? (Yinan Wang) > 10. Meteorite Picture of the Day (valpar...@aol.com) > 11. Re: Russian Meteor event? (Sterling K. Webb) > 12. Discovery of new Arizona meteorite strewnfield from Casa > Grande Fireball June 1998 (wahlpe...@aol.com) > 13. Russian Meteor event? (Mark Ford) > 14. Re: Russian Meteor event? (Robin Whittle) > 15. Russian Meteor Event (Carsten Giessler) > 16. Russian Meteor Event (Carsten Giessler) > 17. Re: Russian Meteor Event (Claudiu Tanaselia) > 18. Re: Russian Meteor Event (drtanuki) > 19. Re: Russian Meteor Event (Graham Ensor) > 20. Russian Meteorite event (Bruce Wegmann) > 21. RT live russia (drtanuki) > 22. RT NEWS Asteroid event 15FEB2013 (drtanuki) > 23. Russian Meteorite Event (Felipe Guajardo) > 24. Re: Russian Meteorite Event (Mark Ford) > 25. Re: Russian Meteor event? (Graham Ensor) > 26. Re: Russian Meteor event? (Graham Ensor) > > > -- > > Message: 1 > Date: Thu, 14 Feb 2013 10:01:50 -0700 > From: Meteorite Men > Subject: [meteorite-list] $10K Tucson Gem Show Charity Raffle Tomorrow > To: Meteorite-list@meteoritecentral.com > Message-ID: > > Content-Type: text/plain; charset=ISO-8859-1 > > Dear Listees: > > It was great to see so many of you here for the 2013 Tucson gem shows. > Thanks to everyone who attended the 14th annual party -- especially > Maria Hass who organized it -- and congrats to all the 2013 Harvey > Award winners. > > In other news: Aerolite Meteorites is hosting a charity raffle at the > gem show with approximately $10,000 in prizes, and the drawing is > tomorrow. All revenue from ticket sales goes directly to two of my > favorite Arizona nonprofits: HOPE Animal Shelter (Tucson's only > no-kill shelter) and Challenger Space Center Arizona, a wonderful > organization dedicated to science education for kids. > > You do NOT need to be present to win, and it's easy to purchase > tickets via PayPal. The deadline for online ticket purchases is end of > day today, and tickets can also be purchased, in person, up until 10 > am tomorrow at both of our Tucson locations. All are warmly invited to > attend the drawing which will be at noon tomorrow, in our main > showroom, Suite 323 at the Hotel Tucson City Center. Representatives > from HOPE and AZ Challenger will be present to receive their checks, > immediately following the drawing. > > Oh behalf of HOPE and AZ Challenger, our sincere thanks to everyone > who has supported this venture! > > Details: http://www.aerolite.org/2013-gem-show-raffle.htm > > > > With best wishes to all, > > Geoff N. > > www.aerolite.org > www.meteoritemen.com > > > -- > > Message: 2 > Date: Thu, 14 Feb 2013 10:53:17 -0700 > From: > Subject: Re: [meteorite-list] Asteroid Hits Earth! How the Doomsday > ScenarioWould Play Out > To: meteorite-list@meteoritecentral.com > Message-ID: > > <20130214105317.b86ea499b59be1b7298b47d2f1127a77.3502cb386a@email13.secureserver.net> > > Content-Type: text/plain; charset="utf-8" > > Right on, Adam. > If only we could get some Tribbles. They'd be great for those moments > when a jerk cuts me off at highway speed in traffic, when the post > office unbelievably crushes one of my customer's packages, or when my > spouse occassionally goes into her dr. jekyll and mr. hyde act. Though, > I'd be torn about getting rid of my secret stash of quadrotriticale... > > Best, > Daniel > > Daniel Noyes > Genuine Moon & Mars Meteorite Rocks > i...@moonmarsrocks.com > www.moonmarsrocks.com > ebay: danovanni > > > > Original Message
Re: [meteorite-list] Meteoritic stardust anti-ageing cream
"..He then bought a rather large slice to grind up himself." no :( __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Silly-sounding Meteorite Names
Thumb Butte http://www.lpi.usra.edu/meteor/about.php#update just released today perfect timing.. __ 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] hello all
first time poster, longtime list lurker here ;) just wanted to say Hi! to everyone =) I'm surprised my earlier reply went through. I've been trying to post here for awhile now, but my messages would never show up. Oh well.. guess the cat's outta the bag now, heh __ 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
Re: [meteorite-list] NWA 6694
Congrats on that nice looking breccia! Breccias are my favorites, esp. polymicts. It's like having different stones within a stone. Reminds me alot of DaG 400, except more clast laden. One of the few neat & interesting examples of how eucrites can look so lunar. e.g. (NWA 6072 --> NWA 482) (NWA 5234 --> NWA 5000) and now: (NWA 6694 --> DaG 400) any others? Best Wishes on your surgery! and Hope you get better soon! __ 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
Re: [meteorite-list] NWA 6694
p.s.- I don't know of any other eucrite(or HED for that matter) that resembles NWA 6694. I think what you have is quite unique. __ 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
Re: [meteorite-list] question
I have dealt with lucyfi90 before. She has some really rare stuff. Her slices are big and gorgeous but they are also very thin(at least mine was). I would consider her an honest & trustworthy seller. She shipped my piece from within the USA, and it was shipped rather quickly. But I think she had a bad incident with the postal service mangling one of her shipments once before, so now she ships piece(s) in what amounts to an insulated small wooden crate inside a box!(again, at least that's was what I got), the best packaging job ever! Which is good because we are talking about very thin slices here. I received mine in perfect condition. She is also very easy to communicate with. I would recommend her. __ 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
Re: [meteorite-list] Cassini Presents Saturn Moon Quintet
Amazing picture. And it's not a photo composite either. I always liked Mimas(The DeathStar ;) __ 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
Re: [meteorite-list] Long Lost Moon Rock Found.
The Alaska moon rock is not lost either. It might actually go up for auction one day. As a planetary collector, I'm saving up my pennies to place a bid ;) ha http://www.huffingtonpost.com/2011/07/15/coleman-anderson-moon-rocks-alaska_n_899748.html __ 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] 2011 Denver Mineral Show
now that it's over, any photos or details about it? anyone? any photos of the COMET auction too? Wish I could've gone.. __ 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
Re: [meteorite-list] Meteorite Picture of the Day
me too.. but I sorta found a way around this(until it gets fixed).. using Windows XP & IE, right-click on the picture. click properties. copy the URL address for the picture paste it to your web address bar and go when you see the picture only, click the little tab right next to the magnifying glass at the bottom right of your screen(toolbar) enlarge to 400% now sit back u mad? ;) p.s.- yay for MPoD! __ 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] hmm..
http://times-news.com/latest_news/x1190858668/Possible-meteorite-brings-calls-to-911-center not too far from where I live.. __ 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
Re: [meteorite-list] Sneak Peek ~ A Slice of Heaven! Stay tuned...
I think I know what it is.. but I will refrain from saying because I don't want to take away from Greg's moment(unless I'm given the okay to). This is purely a guess on my part. But it's a very very good guess. __ 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
Re: [meteorite-list] Sneak Peek ~ A Slice of Heaven! Stay tuned...
hint: 0596-Selene (related to 7792-Selene) __ 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
Re: [meteorite-list] Meteorite fall in Draveil (Essonne), France?
..finder's last name is Comette. How cool is that? ;) I hope they don't get teased as much as I do with my last name(though I do think my last name is cool too ;) __ 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
Re: [meteorite-list] Slice of Heaven - NWA 6566 - AD
Cool new meteorite! (ah, my guess of what it is was wrong though ;) __ 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
Re: [meteorite-list] 2011 Denver Mineral Show
Nice pics. Thanks for sharing! Looking forward to seeing the Mineral Show photos. __ 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
Re: [meteorite-list] New 300g Chondrite find
Niceee. 300 grams, now that's a good size. That dirt line is kinda neat too. One can easily visualize how the whole stone was semi-buried in the ground. Like seeing both the top and submerged parts of an iceberg. Congrats! __ 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
Re: [meteorite-list] New 300g Chondrite find
oops, that was the 169 gram stone. Nevertheless, Nice finds and Congrats on both of those ;) On Wed, Oct 26, 2011 at 11:55 PM, Benjamin P. Sun wrote: > Niceee. 300 grams, now that's a good size. That dirt line is kinda > neat too. One can easily visualize how the whole stone was semi-buried > in the ground. Like seeing both the top and submerged parts of an > iceberg. > Congrats! > __ 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
Re: [meteorite-list] Impact Melt or Shock Melt?
AFAIK, an impact melt is created from the heat and energy of the collision itself. A contact metamorphism, in-situ. Whereas, a shock melt is created by the energy of the shock waves that travel through the rock and away from the impact site. The shock wave compression generates the heat. Reminds me of the great debate regarding Dhofar 026/461/ect. Whether it is an impact melt or not. First, it was said to be an impact melt breccia. Then others said it's actually a Shocked granulitic breccia. Then the ambiguous Crystalline melt classification. And now, the latest research puts it back as an Impact melt.. __ 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
Re: [meteorite-list] NASA Captures New Images of Large Asteroid Passing Earth (2005 YU55)
I hope NASA can get Hubble to take a few pics of YU55 at closest approach. That would be really cool. Because right now, from the radar images, it looks like the egg from the movie "Alien". http://www.clickformedia.co.uk/wp-content/uploads/2010/04/alien_movie_poster.jpg __ 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] Lutetia
21 Lutetia is an enstatite! http://www.eurekalert.org/pub_releases/2011-11/e-la11.php __ 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
Re: [meteorite-list] Lutetia
The measured high density of Lutetia also supports an enstatite composition. And Lutetia is covered with a regolith, estimated to be 3km thick! Lutetia is very old too, and probably darkened naturally through long term solar exposure. Both of these factors can contribute to a lower albedo compared to enstatite meteorites on earth. __ 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
Re: [meteorite-list] Lutetia
Regolith is mostly powdered rock and pebbles from the parent body that may or may not be compacted at the surface. So why should the reflectance spectra from Lutetia's regolith be totally dismissed? Are you dismissing Spectroscopy of asteroids altogether? If the "paint" derived from the parent body, then analysis of the "paint" could possibly tell us something about the parent body itself. Yes? __ 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
Re: [meteorite-list] Lutetia
Spectrum match trumps Albedo discrepancy ;) __ 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
Re: [meteorite-list] Lutetia
Doug, By your own argument, it would be a speculative assumption to consider that Lutetia is not an E-class meteorite, and that it's spectroscopy doesn't reflect in some way it's general composition. Like you say, without a direct sample of Lutetia, no one can be absolutely certain. On this I agree. But for me, all signs are pointing towards ---> enstatite. If I were to place a bet, that's what I would be betting on. In the case of Vesta, it was predicted that it was the source for HED's through Spectroscopy long before the chain of Vestoids was found spanning along Vesta's orbit. Granted, Spectroscopy of asteroids from Earth is probably not as accurate as from a space probe in a close flyby. But that's one of the reasons why it's nice that we have Dawn and Rosetta now. __ 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
Re: [meteorite-list] Lutetia
Carl, Yes, regolith is a mixture of PB and native rock. I can only say, from what I've read about Lunar regolith breccia meteorites, is that they are usually composed of 10%(at most) or less of impactor material, and the remaining majority is native material from the parent body. But Dr. Korotev(or Dr. Irving, et. al.) would be the expert to ask. __ 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
Re: [meteorite-list] Lutetia
Oops, I meant to say "Impactor".. Yes, regolith is a mixture of Impactor* material and native PB rock. I can only say, from what I've read about Lunar regolith breccia meteorites, is that they are usually composed of 10%(at most) or less of impactor material, and the remaining majority is native material from the parent body. But Dr. Korotev(or Dr. Irving, et. al.) would be the expert to ask. __ 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
Re: [meteorite-list] Lutetia
I look forward to hearing more from Larry on this. Thank you Larry. Doug, I wish you live a long life, so you will be able to finally see the results of that 2086 Lutetia sample return mission, if there ever is one. __ 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
Re: [meteorite-list] Lutetia
Doug, Thanks for sharing that info. Your piece of Abee probably just jump alittle bit in value ;) I'm tempted to buy some Abee myself now :) Of course, it may or may not be from Lutetia, but it's a pretty meteorite, and nice to dream or wonder that it could have come from there or some other asteroid like it. But now, the dream has gotten alittle more realistic. That's all I will say on this subject. __ 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
Re: [meteorite-list] 21 Lutetia (article)
I'll let the results speak for itself. As for the Vesta-Howardite confirmation, there is no real surprise for me there. __ 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
Re: [meteorite-list] Lutetia
Here you go people. Read it for free while you still can. http://www.eso.org/public/archives/releases/sciencepapers/eso1144/eso1144.pdf __ 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
Re: [meteorite-list] Phobos-Grunt Mars Probe Remains Silent in Earth Orbit
bummer.. I had high hopes for that mission. It's a loss for all of us. __ 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
Re: [meteorite-list] Meteorite Picture of the Day
wow Mirko, your slices an etchings are amazing. __ 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
Re: [meteorite-list] Statistically Speaking
"3. Q. Has any animal ever been hit by a meteorite?" Valera killed a cow. New Concord killed a horse? hmm.. Nakhla vaporized a dog? lol __ 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
Re: [meteorite-list] Statistically Speaking
"3. Q. Has any animal ever been hit by a meteorite?" Park Forest killed some winged termites. __ 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] Save ANSMET!
http://www.washingtonpost.com/national/health-science/at-the-bottom-of-the-world-a-controversial-search-for-cosmic-leftovers/2011/12/02/gIQAUU8hTO_story.html By Brian Vastag, Published: December 4 The geologist who conceived it called it the poor man’s space program. Sen. John McCain (R-Ariz.) fumed that it was a waste of taxpayer dollars. Meteorite hunter Ralph Harvey simply calls it work. For the 35th year, the United States is mounting its annual campaign to gather space rocks from the wind-hammered icefields of Antarctica. “We’ll be living two to a tent for six weeks, and everybody’s got a snowmobile,” said Harvey, a geologist at Case Western Reserve University who is leading the expedition for the 21st time. “I guess we’re almost like cowboys trying to round up cows.” Except these cows don’t moo. They hunker on the blue ice, half-buried, dark and inert. In the 24-hour sunshine of the austral summer — starting now — meteorites stick out like Angus among Holsteins. “If you want to find stuff falling out of the sky, get a big white sheet,” Harvey said during a phone call from McMurdo Station, the U.S. research base on the continent. “We’ve got a white sheet as big as the continental United States.” Getting to that sheet is a feat of logistical largesse. The eight-person expedition requires 20,000 pounds of gear, hauled first to McMurdo. From there, three giant C-130 transport planes plop the tents, food, water, fuel, snowmobiles, generators and spare parts on the ice halfway to the final destination. From there, many flights of a smaller Otter plane shuttle the expedition to its camp site, which this year is near the Miller Range along the Transantarctic Mountains. “I feel more like I’m moving a city than doing science,” Harvey said. “It will be a three- or four-day process” that will begin Wednesday or Thursday. Scientists say meteorites bombard the Earth from all directions, falling everywhere in roughly equal proportions. But geologic forces concentrate them at the foot of Antarctica’s mountains. Giant ice sheets push against these peaks, churning fallen meteorites toward the surface. Harsh winds knifing down the mountains blow off a layer of snow and ice each year, exposing a new batch. The whole process is a meteorite-generating machine. The expedition collects hundreds each year. “The ice continues to produce more and more meteorites that have been buried below,” said Linda Welzenbach, manager of the National Meteorite Collection at the Smithsonian Institution, where most of the Antarctic finds eventually reside. As a bonus, the continent serves as a natural deep-freeze, keeping the ancient space rocks nearly pristine. Finding them is as straightforward as riding out across the ice with open eyes. Because few Earthly minerals exist out there, anything rocky is bound to come from space. Of every 1,000 meteorites picked off the ice, about 50 hold “outstanding interest to a broad range of scientists,” Harvey said. The smallest are marbles. The largest weigh hundreds of pounds. Some originate at asteroids. Others are free-floating detritus from the birth of the solar system some 4.6 billion years ago. A few — the rarest and, to many scientific minds, the most precious — come from the moon and Mars. An asteroid or comet blasted them into space on an improbable trajectory that eventually landed them at the bottom of the Earth. Nobody knew the Antarctic held such otherworldly wealth until 1969, when a Japanese expedition stumbled on nine unusual rocks near the Queen Fabiola Mountains. It took a few years for Japanese scientists to realize that the rocks hailed from space. (Since then, an ongoing Japanese campaign has collected 30,000 meteorites from Antarctica. Italy, Belgium and China have more recently launched smaller collection programs.) In 1974, word of the Japanese discovery reached William Cassidy, then a geologist at the University of Pittsburgh, who ran the program until 1991. “I realized there had to be some previously unknown process concentrating meteorites in Antarctica,” he wrote in an e-mail. With a grant from the National Science Foundation, Cassidy launched ANSMET, as the program is known. The NSF, NASA and the Smithsonian jointly run it. The ANSMET logo is playful: A penguin in a baseball hat running across the continent, a flaming space rock falling into his glove. Harvey and other scientists credit the program’s longevity to Cassidy’s vision: He insisted that all finds be made available to any scientist in the world. “It almost sounds ridiculous,” said Harvey. “Who goes out and finds a new Egyptian pyramid and says, ‘Hey, you guys study it and I’ll watch’? That’s basically what it is.” Harvey pinned the cost of ANSMET at about $1 million a year. He said it’s a bargain; Cassidy called it “the poor man’s space program.” Sending robots or humans into space to collect such rocks would costs tens of billions. “It’s a unique way to explore the solar system, and we are d
Re: [meteorite-list] LOTS OF MOON ROCKS GONE?
I do believe quite a bit of Apollo lunar material has been lost or stolen. Which is unfortunate. But not surprising or unexpected, given human nature. Though it may not be as much as the article makes it seem. The article doesn't say how much(weight-wise) is missing. You have to consider that a certain amount of the Apollo lunar material was destroyed by scientists when they analyzed some samples. This may not have been all accounted for. Also, did they save all the cutting/chipping dust and fragments from the samples since 1969? http://www.physorg.com/news/2011-12-misplaced-nasa-moon-space.html one of the responses from the article above: "This is an intriguing story at this time of many intrigues in science and politics. A special investigator from NASA showed up at my lab at the University of Missouri in ~1972 and accused us of losing Moon samples. I showed him receipts for every sample received, every sample melted/vaporized/analyzed, and every sample returned to the Lunar Curator. We sent him back to Houston, but he never told us if he found out why he had been sent on this "wild goose chase." With kind regards, Oliver K. Manuel Former NASA Principal Investigator for Apollo" __ 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
Re: [meteorite-list] LOTS OF MOON ROCKS GONE?
p.s.- yes. NASA should have kept better account and been more careful with who and how they lent the Apollo samples. __ 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
Re: [meteorite-list] LOTS OF MOON ROCKS GONE?
Hi Randy and List, My first post on this thread was more in regards towards loss coming from loans for display to museums, observatories, and the "Goodwill" stones to countries and states, ect. And that not so much of the loss was coming from the scientists who actually need the material for important studies. It's kinda sad that after the first few Apollo missions, public interest and attention waned. And so did the care and responsibility(from NASA). __ 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
Re: [meteorite-list] LOSS OF METEORITE BY UPS
I was going to type a long post about this subject, but I don't have time. I gtg out and join the fray.. I mean last minute Xmas shopping.. I'll just leave this here: http://www.sahara-nayzak.com/stolen/planetary.html __ 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
Re: [meteorite-list] New Fall...Mars
Congrats on the newest Martian! A Martian Fall.. Wow Impressive oriented and fusion crusted individual there! Yes, can't wait to see the rest of it ;) __ HAPPY HOLIDAYS!! 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
Re: [meteorite-list] ADVERT - NEW WITNESSED SHERGOTTITE FALL
How about Tata (a) & Tata (b)? :) Tata (a) a.k.a. NWA 1430 - the IIIAB iron find Tata (b) - the new 2011 martian shergottite fall Just as with Benares (a) - the 1798 LL4 India fall & Benares (b) - the Indian iron find yes? __ HAPPY HOLIDAYS!! 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
Re: [meteorite-list] Telescope experts
Nah, I would pass on that. Too much central obstruction. Focal length is too short for good planetary views. I'd recommend a good, quality small refractor or tabletop refractor instead, 60mm or bigger. Avoid all the toy scopes. Look for coated(multi-coated is better) achromatic AIR SPACED glass lenses. You can always add a barlow lens later to further correct any color aberrations. __ HAPPY HOLIDAYS!! 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
Re: [meteorite-list] Telescope experts
Maybe this? ebay item# 220928482360 He's got four of them and they are new. The eyepiece alone is worth $50 nifty carry case included too. __ HAPPY HOLIDAYS!! 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
Re: [meteorite-list] telescope
On a limited budget, a small refractor is best for casual planetary and lunar viewing. Small reflectors are more suited for viewing deep space objects, such as galaxies and nebulas. Avoid reflectors under 100mm in aperture. Their large central obstruction from the secondary mirror blocks out too much light. You'd get a better, brighter, sharper image through a 60mm refractor than through a 80mm reflector. I started out in astronomy decades ago with a quality 60mm tabletop spotting scope with a zoom eyepiece. I could easily see all 4 of Jupiters' moons, the rings of Saturn, the orange disk of Mars, the phases of Venus, 7 stars of Pleiades, and Orion's nebula with it. Ignore all the magnification power hype. A useful magnification guideline is 50-60x per inch of aperture. So 60mm(2.4 inches) will yield a maximum useful magnification of about 140x. More than enough for the casual astronomer. Beyond that magnification and everything begins to look crappy, dark and fuzzy. Remember, even on a low budget, you can still find a good quality scope. Look for a coated(multi-coated if you're lucky) air-spaced achromatic lens and good multi-element .965" or 1.25" sized eyepieces. A finderscope is a non-essential accessory and usually useless junk anyways. __ HAPPY HOLIDAYS!! 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
Re: [meteorite-list] telescope
Hi John, I remember those telephoto converters sold back in the late 80's-early 90's. I even thought about buying one myself back then. To answer your question, it wouldn't hurt to try that setup. F/16 should be okay for bright objects such as the moon and planets. I do not know what Nikon lens you are using exactly, whether it is a conventional lens or a catadioptric lens. Usually camera lenses have so many glass elements that light has to pass through. More so than a typical refractor telescope would have. Add to that your multiple teleconverters and then the scope converter itself, well needless to say a nice bright sharp picture may be "iffy". Less is better sometimes. I would go by the lower end of the guideline in your case. 50x magnification per inch aperture. If I recall, those telephoto converters were meant more for lower power wide field use. Remove a teleconverter or two, and I bet it would be great on open star clusters, bright nebulas, and large galaxies such as Andromeda. On 1/10/12, Pict wrote: > Mmmm. Tripod will go to 8ft with room to spare, so that covers the zenith. > I guess if I lug around some stepladders I have the horizon in my sights > also. I take the point! > > Regards, > John > > > On 11/01/2012 00:52, "Peter Scherff" wrote: > >>Hi John, >> >>I have a similar rig. I find that I can use it to look at objects on the >>horizon. Unfortunately it is a killer when you turn it near the zenith. >>Without a diagonal you will kill your neck. >> >>Thanks, >> >>Peter >> >>-Original Message- >>From: meteorite-list-boun...@meteoritecentral.com >>[mailto:meteorite-list-boun...@meteoritecentral.com] On Behalf Of Pict >>Sent: Tuesday, January 10, 2012 11:15 AM >>To: Benjamin P. Sun; meteorite-list@meteoritecentral.com >>Subject: Re: [meteorite-list] telescope >> >>Benjamin, >> >>Haven't had a chance to play with this yet but I just managed to find a >>Nikon Lens scope converter. They were discontinued some time ago and are >>rare - been looking for a couple of years for a reasonably priced one. You >>mount it onto a manual focus F mount telephoto and it turns the lens into >>a >>telescope with a magnification 1/10th the focal length in mm. >> >>Now I have a 600mm f4, two 1.4X teleconverters, and a 2X teleconverter. So >>in theory I could stack all the teleconverters on and have a 2400mm f16 >>lens. The front objective on this lens is 160mm in diameter so according >>to >>your rule of thumb it should be good for a useful magnification of >>(50/25)x160 = 320, whereas the actual magnification will be 2400/10=240, >>well within this. >> >>I was assuming the lens would be too dark at f16 to see much. Is this >>setup >>comparable to a telescope in the sense that your guidelines for maximum >>useable magnification still apply? I'd be delighted to hear that I do >>have a >>chance of it being useable at this magnification. What do you think? It >>will >>be monstrously unwieldy, but I do have a substantial tripod and gimbal >>head >>so should be possible to keep it reasonably steady. >> >>Regards, >>John >> >> >>On 10/01/2012 04:13, "Benjamin P. Sun" wrote: >> >>>On a limited budget, a small refractor is best for casual planetary and >>>lunar viewing. >>> >>>Small reflectors are more suited for viewing deep space objects, such >>>as galaxies and nebulas. >>>Avoid reflectors under 100mm in aperture. Their large central >>>obstruction from the secondary mirror blocks out too much light. You'd >>>get a better, brighter, sharper image through a 60mm refractor than >>>through a 80mm reflector. >>> >>>I started out in astronomy decades ago with a quality 60mm tabletop >>>spotting scope with a zoom eyepiece. I could easily see all 4 of >>>Jupiters' moons, the rings of Saturn, the orange disk of Mars, the >>>phases of Venus, 7 stars of Pleiades, and Orion's nebula with it. >>>Ignore all the magnification power hype. A useful magnification >>>guideline is 50-60x per inch of aperture. So 60mm(2.4 inches) will >>>yield a maximum useful magnification of about 140x. More than enough >>>for the casual astronomer. Beyond that magnification and everything >>>begins to look crappy, dark and fuzzy. >>> >>>Remember, even on a low budget, you can still find a good quality >>>scope. Look for a coated(multi-coated if you're lucky) air-spaced >>>achromatic lens and good multi-element .965" or 1.25&q
Re: [meteorite-list] tucson, day one
Sounds like fun :) Wish I could go :( Maybe next year :P __ 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
Re: [meteorite-list] TUCSON, DAY 3 HIGHLITES
Thanks for the reports Steve! Go Giants Go!! ;) __ 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] Vesta & HED's
This is not a surprise to me... or to most of us. But it may be "news" to some of you out there.. http://www.jpl.nasa.gov/news/news.cfm?release=2012-132 https://asunews.asu.edu/20120510_Vesta "Data also confirm a distinct group of meteorites found on Earth did, as theorized, originate from Vesta. The signatures of pyroxene, an iron- and magnesium-rich mineral, in those meteorites match those of rocks on Vesta's surface. These objects account for about 6 percent of all meteorites seen falling on Earth. This makes the asteroid one of the largest single sources for Earth's meteorites. The finding also marks the first time a spacecraft has been able to visit the source of samples after they were identified on Earth." “Dawn observations enabled us to recognize that there are actually TWO large basins at the south pole, an older one named “Veneneia” and a younger one named “Rheasilvia”,” explains Williams. The Rheasilvia basin dominates the geology of Vesta, as the basin itself and its impact ejecta cover most of the southern hemisphere. The center of Rheasilvia has a central peak taller than Mt. Everest or Mauna Loa on Earth, similar in height to Olympus Mons on Mars. This basin appears to have excavated into the mantle of Vesta, exposing material spectrally similar to diogenite meteorites; Vesta’s crust is spectrally similar to eucrite and howardite meteorites, thus confirming that Vesta and its family of asteroids are the source of the howardite-eucrite-diogenite (HED) family of basaltic achondrite meteorites. “For most planets and moons we see the pictures first, then have samples collected later to confirm our geologic interpretations. In the case of Vesta, thanks to the HED meteorites, we have the samples first, and must try to relate them to our emerging geologic picture of Vesta from the Dawn mission,” __ 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] Never underestimate or dismiss Spectroscopy
Protoplanet in color May 2012 Recent results of the Dawn mission show that the asteroid Vesta is the only known remnant from a big early phase of planet formation. The cameras help NASA's Dawn space probe the mysteries of the asteroid Vesta. The color images now confirm: Vesta is a relic from the early solar system. Because of the surprisingly heterogeneous celestial body is more like a planet than a primitive asteroid. In addition, recent studies show that most of HED meteorites - a special group of meteorites - are in fact, fragments of Vesta. Since the summer of 2011, two cameras on board the spacecraft orbiting the asteroid Vesta, Dawn - one that is currently in operation, and a backup camera. With this camera system, the scientists, led by the Max-Planck-Institute for Solar System Research (MPS) designed and built, supplied by NASA planetary scientist with the probe image data of the previously almost unexplored asteroid. The "framing cameras" are equipped with seven different color filters and a clear filter. You can do much more than a "normal" camera: The color filters can decipher the exact composition of the reflected light from Vesta. Thus, the scientists map the surface of their research subject and draw conclusions about its mineralogical composition. After ten months of meticulous observations of the planet, scientists are now certain that the celestial body is unlike any previously studied asteroid. Vesta is a kind of living fossil prehistory of planet formation. Even the diameter stands, with 525 kilometers, as the third largest asteroid of all. "Vesta is a proto-planet," said the lead investigator of the camera crews, Nathues Andreas, "and is therefore in a primitive stage of development, from which have been once the giant planets such as Earth and Mars formed. Vesta is probably the last specimen of this species of celestial bodies. The measurements of the other instruments on-board support this interpretation." So far, Vesta was photographed only from a great distance. The observations with the circular orbit in the framing cameras now provided are surprising: "No one had expected the large differences in brightness of Vestas surface," explains researcher Lucille Le Corre from MPS. "While the brightest spots on Vesta reflect sunlight as much as some snow, the reflectivity of the dark areas is comparable to that of coal. The asteroid shows such a brightness variation not yet observed by a spacecraft." Striking is the sharp difference between the northern and southern hemispheres of the asteroid. This is also reflected in the different colors, which have been identified by scientists at Vestas surface. In particular, the color differences are interesting, reflecting the presence of rocks, the planetary scientists know from studying a particular group of meteorites, the "HED meteorites." The acronym stands for Howardites, Diogenites an Eucrites. Even before the mission, these celestial stones were suspected to be fragments of Vesta, as the reflectance spectra of HED meteorites are very similar to those of Vesta. An important goal of the Dawn spacecraft was therefore to find further evidence of the link between Vesta and the HED meteorites. Eucrites are rigid crustal rocks similar to terrestrial basalt, but much brighter, however, diogenites come from greater depths of the crust. The howardites are mixtures of the two rock types, that come from impacts. The pictures show our framing cameras now distinct color differences between regions with rock, which comes from the interior of Vesta, and those that are more influenced by crustal rocks," says Andreas Nathues. "We were able to clarify with the observations of other instruments, the Dawn of origin of the HED meteorites. It is actually Vesta." The new data have also revealed that Vesta's color and topography are not generally correlated . This is the case with the Moon: Dark areas correspond to valleys on the moon, bright areas indicate the range of hills. But in this context, not to Vesta. The Dawn spacecraft is at Vesta until the end of August 2012, and then on to her second goal of the dwarf planet Ceres. The mission was launched in September 2007 in the direction of Vesta and arrived July 2011 into an orbit around the asteroid. The dwarf planet Ceres is the largest asteroid between Mars and Jupiter. TD/MPG / PH TD / MPG / PH More info Original work CT Russell et al.: Dawn at Vesta: Testing the Protoplanetary Paradigm, Science 336, 6082, 684-686 (2012), DOI: 10.1126/science.1219381 "2 Pallas has not been visited by spacecraft, but if the Dawn probe is successful in studying 4 Vesta and 1 Ceres, and if sufficient fuel remains, it is possible its mission may be extended to include a flyby of Pallas as Pallas crosses the ecliptic in 2018. However, due to the high orbital inclination of Pallas, it will not be possible for Dawn to enter orbit." yay Pallas 2018! woot! ;D __ V
Re: [meteorite-list] Vesta & HED's
Yes, but aren't the relatively few non-Vesta eucrites classified as ungrouped achondrites or anomalous eucrites?(if not then they should be) So I would like to think that there is already the notion that there may be a few rare exceptions. On 5/13/12, MstrEman wrote: > Keep in mind that there are now some non-Vesta originating eucrites > identified. So the pass state of knowledge holding that all HEDs were > from Vesta should be qualified with a caveat that "Most all eucrites > are from Vesta" or "with rare exception..." or "all most all..." > > Elton > > On 5/11/12, Benjamin P. Sun wrote: >> This is not a surprise to me... or to most of us. But it may be "news" >> to some of you out there.. >> >> >> http://www.jpl.nasa.gov/news/news.cfm?release=2012-132 >> >> https://asunews.asu.edu/20120510_Vesta >> >> "Data also confirm a distinct group of meteorites found on Earth did, >> as theorized, originate from Vesta. The signatures of pyroxene, an >> iron- and magnesium-rich mineral, in those meteorites match those of >> rocks on Vesta's surface. These objects account for about 6 percent of >> all meteorites seen falling on Earth. >> >> This makes the asteroid one of the largest single sources for Earth's >> meteorites. The finding also marks the first time a spacecraft has >> been able to visit the source of samples after they were identified on >> Earth." >> >> “Dawn observations enabled us to recognize that there are actually TWO >> large basins at the south pole, an older one named “Veneneia” and a >> younger one named “Rheasilvia”,” explains Williams. >> >> The Rheasilvia basin dominates the geology of Vesta, as the basin >> itself and its impact ejecta cover most of the southern hemisphere. >> The center of Rheasilvia has a central peak taller than Mt. Everest or >> Mauna Loa on Earth, similar in height to Olympus Mons on Mars. This >> basin appears to have excavated into the mantle of Vesta, exposing >> material spectrally similar to diogenite meteorites; Vesta’s crust is >> spectrally similar to eucrite and howardite meteorites, thus >> confirming that Vesta and its family of asteroids are the source of >> the howardite-eucrite-diogenite (HED) family of basaltic achondrite >> meteorites. >> >> “For most planets and moons we see the pictures first, then have >> samples collected later to confirm our geologic interpretations. In >> the case of Vesta, thanks to the HED meteorites, we have the samples >> first, and must try to relate them to our emerging geologic picture of >> Vesta from the Dawn mission,” >> __ >> >> 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 >> > __ 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
Re: [meteorite-list] Never underestimate or dismiss Spectroscopy
"Generally speaking, stating to the HED clan of meteorites are mainly derived from "Vesta" is acceptable so long as we understand ( Caveat #1) that they could also be from any of the Vesta family: any of those 6000+ bodies populating the Vesta orbital region. Many of those are over 1 km size and most but not all have Vesta matching spectra/albedos." I'd consider that the many Vestiods of the Vesta family were and are still pieces of their parent body, Vesta. Not counting the odd interloper or co-habitant of the group region, of course. Just like the many martian and lunar meteoriods(martianiod? lunoid?) out there floating in space, blasted off their PB's, were and still are considered pieces of Mars and the Moon respectively. Speaking for myself, it matters very little whether my HED came from Vesta directly or indirectly from a Vestiod. In the end, it's still from Vesta. "The second caveat is covered elsewhere in recent list commentary: the fact that we do have some non-Vestian eucrites was panned as "insignificant". Well, Au contraire-- the existence of a but a solitary example is proof that the "basaltic, sub/minor-planetary differentiation process" happened on more than a single body. Adding credibility to the planetary-science model. Naively stating over and over that "all eucrites " come from Vesta" won't make it true. Doing so retards the advancement meteorite science." Keep in mind that the word "eucrite" and "eucritic" was a rather broad and loosely used term back in the (old) day(s). Scientists now are more specific in it's usage, accurate and clear with their classifications . So some of those old eucrites and rare "non-Vestian eucrites" need to be re-examined and possibly reclassified. >From Wikipedia: "Eucrites are achondritic stony meteorites, many of which originate from the surface of the asteroid 4 Vesta and as such are part of the HED meteorite group. They are the most common achondrite group with well over 100 distinct finds at present. Eucrites consist of basaltic rock from the crust of 4 Vesta or a similar parent body. They are mostly composed of Ca-poor pyroxene, pigeonite, and Ca-rich plagioclase (anorthite)." I happen to agree with this definition. Also: "Eucrites get their name from the Greek word eukritos meaning "easily distinguished". This refers to the silicate minerals in them, which can be easily distinguished because of their relatively large grain size. Eucrite is also a now obsolete term for bytownite-gabbro found on Earth. The term was used as a rock type name for some of the Paleogene igneous rocks of Scotland." __ 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
Re: [meteorite-list] Never underestimate or dismiss Spectroscopy
If a dealer or someone were to claim that their Tatahouine or NWA 2060 came from Vesta, I would not counter or argue with him. Simply because he has more evidence and proof pointing his way now. You should say that the(<1%) rare odd non-Vestan ungrouped anomalous "eucrite" may or may not be from Vesta instead. At this time, a sample return mission from Mars, Phobos, Europa or Titan would make more sense than a sample return mission from Vesta. On 5/16/12, Benjamin P. Sun wrote: > "Generally speaking, stating to the HED clan of meteorites are mainly > derived from "Vesta" is acceptable so long as we understand ( Caveat > #1) that they could also be from any of the Vesta family: any of > those 6000+ bodies populating the Vesta orbital region. Many of > those are over 1 km size and most but not all have Vesta matching > spectra/albedos." > > > I'd consider that the many Vestiods of the Vesta family were and are > still pieces of their parent body, Vesta. Not counting the odd > interloper or co-habitant of the group region, of course. > Just like the many martian and lunar meteoriods(martianiod? lunoid?) > out there floating in space, blasted off their PB's, were and still > are considered pieces of Mars and the Moon respectively. > Speaking for myself, it matters very little whether my HED came from > Vesta directly or indirectly from a Vestiod. In the end, it's still > from Vesta. > > > "The second caveat is covered elsewhere in recent list commentary: the > fact that we do have some non-Vestian eucrites was panned as > "insignificant". Well, Au contraire-- the existence of a but a > solitary example is proof that the "basaltic, sub/minor-planetary > differentiation process" happened on more than a single body. Adding > credibility to the planetary-science model. Naively stating over > and over that "all eucrites " come from Vesta" won't make it true. > Doing so retards the advancement meteorite science." > > > Keep in mind that the word "eucrite" and "eucritic" was a rather broad > and loosely used term back in the (old) day(s). Scientists now are > more specific in it's usage, accurate and clear with their > classifications . So some of those old eucrites and rare "non-Vestian > eucrites" need to be re-examined and possibly reclassified. > > > From Wikipedia: > > "Eucrites are achondritic stony meteorites, many of which originate > from the surface of the asteroid 4 Vesta and as such are part of the > HED meteorite group. They are the most common achondrite group with > well over 100 distinct finds at present. > > Eucrites consist of basaltic rock from the crust of 4 Vesta or a > similar parent body. They are mostly composed of Ca-poor pyroxene, > pigeonite, and Ca-rich plagioclase (anorthite)." > > > I happen to agree with this definition. Also: > > > "Eucrites get their name from the Greek word eukritos meaning "easily > distinguished". This refers to the silicate minerals in them, which > can be easily distinguished because of their relatively large grain > size. > > Eucrite is also a now obsolete term for bytownite-gabbro found on > Earth. The term was used as a rock type name for some of the Paleogene > igneous rocks of Scotland." > __ 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
Re: [meteorite-list] Never underestimate or dismiss Spectroscopy
Carl wrote: "You may be right about Vesta and Eucrites but, without an actual sample return it is still merely an educated guess." I would say that from the data gathered and from the conclusions of the scientists working with the Dawn mission result to more than that of an educated guess. Spectroscopy from the Dawn misson is the most accurate evidence we have so far. The link between Vesta and HED's had been established. Now with the Dawn space probe data, it's verified. To send an expensive sample return mission to Vesta merely further verifiy the link is unneccesary. Ideally, they should. If money was not an issue, I would not mind if they did. But realistically and practically, they won't. The space program should be more focused on new discoveries and exploration. I am not saying that all meteorites classified as eucrites are indeed eucrites from Vesta. The rare odd eucrite may or may not have come from Vesta or one of the many Vestiods. Though they may differ in some way from the majority of other eucrites, how can you say definitively that the anomalous eucrites are from a different PB? Especially seeing how varied & diverse Vesta is and it's long history. What you have is a mere possiblity that there is another PB responsible for the few rare odd eucrites. And still that is just one of the many possibilites that could explain them. "According to the latest probes of Mercury we still don't know what it's surface rocks would compare to in our collections." Maybe because there is nothing to compare with. Perhaps there are no mercurian meteorites in our collections. Which I believe is the case. There are theories, but no truly substantial connection. This is in contrast to Vesta & HED's. It's much easier for a piece of Vesta to escape and "fall down", than it is for a piece of Mercury to "fall up" to Earth's orbit. __ 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] Sutter's Mill TKW Update - Friday May 18
I would just like to give Double Congrats!! to Robert Ward for not only finding the first Sutter's Mill meteorite, but also the current 44gram main mass. WTG! :) It will be interesting to see what the final classification is for this meteorite. It's going to be a rare type though, no doubt. And if it's a new type.. Triple Congrats!!! are in order ;D __ 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] Moon Rocks
The Apollo 11 Goodwill moon rocks are fragments of about 50mg for each plaque. But the Apollo 17 Goodwill moon rocks have a fragment of about 1 gram each. __ 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] Speaking of Moon Rocks..
This just got approved today: Lynch 002 http://www.lpi.usra.edu/meteor/metbull.php?sea=&sfor=names&ants=&falls=&valids=&stype=contains&lrec=50&map=ge&browse=&country=All&srt=name&categ=All&mblist=All&rect=&phot=&snew=1&pnt=Normal%20table&code=55542 The second official lunar from Australia! There's also a new martian: NWA 7258 http://www.lpi.usra.edu/meteor/metbull.php?sea=&sfor=names&ants=&falls=&valids=&stype=contains&lrec=50&map=ge&browse=&country=All&srt=name&categ=All&mblist=All&rect=&phot=&snew=1&pnt=Normal%20table&code=55540 Looks like 2012 is the Year of the Martian(s)! __ 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
Re: [meteorite-list] A Fleeting Flyby of a Battered World (Asteroid 21 Lutetia)
That is a great video to watch! I highly recommend you all watch it in full screen :) It feels like you are on the probe/spaceship itself flying past this ancient titanic ENSTATITE asteroid belt-interloping remanant from the early solar system ;) http://www.esa.int/esaSC/SEMXCODXR3H_index_0.html __ 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] New Planet Found, Smaller Than Earth, Orbiting Distant Star
"Thirty-three light-years away, in the constellation Leo the lion, astronomers say they have found a world considerably smaller than Earth, orbiting a dim red-dwarf star. That's something to think about. While scientists have confirmed the existence of more than 700 so-called exoplanets since 1995, most of them have been giant -- many considerably larger than Jupiter. This new world, say the researchers who found it, may be only 5,200 miles across, about two thirds as large as Earth..." http://gma.yahoo.com/planet-found-smaller-earth-orbiting-distant-star-203543868--abc-news-tech.html __ 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
Re: [meteorite-list] CURIOSITY POLL VOTE
A :) __ 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
Re: [meteorite-list] First meteorite found at Battle Mountain!
WTG Bob & Moni! :) __ 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
Re: [meteorite-list] Meteorite origin questions
(one of) the possible sources from what I've heard/read: H chondrites--> asteroid 6 Hebe Aubrites--> 1303 Eger Enstatites--> 21 Lutetia Mesosiderites--> 4 Vesta Please keep in mind that I am not stating this as fact. I'm not interested in debating this. You can find this info. simply by Googling or visiting Wikipedia.. __ 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
Re: [meteorite-list] Meteorite origin questions
Hello John, Thank you for your email. I apologize if my posting seemed rude. I was merely defending myself with that disclaimer at the end, as it has been my experience on the met-list that discussing PB's(parent bodies) is often a contentious subject with some people. My post disclaimer was not intentionally directed towards you. I would also like to add, that many believe that certain carbonaceous chondrites originated from cometary debris or the remains of "burnt-out" old comets, where the icy outer layer has erroded away through exposure and only the rocky core is all thats left. Almahatta Sitta is one of my favorite meteorite additions to my collection. Even though I specialize in collecting planetary meteorites(Lunar & Martians, with a few irons thrown in), I made room for that one, as it is the asteroid 2008 TC3 itself that fell to earth. Regards, -Ben On 9/23/12, J Sinclair wrote: > Thanks Benjamin. I know some of this information is theory and subject > to change as we learn more. I find it amazing we know as much as we do > about the origins of meteorites. > > > > On Sun, Sep 23, 2012 at 7:57 AM, Benjamin P. Sun > wrote: >> (one of) the possible sources from what I've heard/read: >> >> H chondrites--> asteroid 6 Hebe >> >> Aubrites--> 1303 Eger >> >> Enstatites--> 21 Lutetia >> >> Mesosiderites--> 4 Vesta >> >> >> >> Please keep in mind that I am not stating this as fact. I'm not >> interested in debating this. You can find this info. simply by >> Googling or visiting Wikipedia.. >> __ >> >> 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 > __ 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