Re: [meteorite-list] Meteorites on the moon
Hello Elton and friends: Pandora's meteoritical emotions are clouding this without hope ... You're all too right of course, may I fill up the glass half-way? The atmosphere's viscosity (density) isn't the only thing that determines the entry velocity (besides all the stuff Chris and Sterling too threw in). You forgot cross sectional surface area in the quest for another Cañon Diablo. I'm not sure how minuscule they have to be but those who are into microfossils in paleontology will understand the absolute pleasure of the wondrous world of small things. Instead of pleasuring your tongue to trap snowflakes, you can sample a fine rain of micrometeorites for your delight.* Pull your favorite rare magnets through a confectionary sugar-like earth and assemble pounds of space residue like golden flakes from the Mormon's sandbar. And when you need bigger things, just remember the world doesn't revolve around meteorites...That Tektite Fields are Forever! No aerodynamically sculpted buttons here, but Newton's barrel is alive - kinetic energy rotational and harmonic dancing will make some very ornate Christmas globes. Quaintly collectable goodies from Santa's Tycho Tektite Toy facility --- models including those handsomely wiry striations-texturized globules. And the irradiation could even enhance the chromophores to fluoresce like a spectral kaleidoscope of pearly stars, at least after bedtime as one sleeps ... Best wishes, Doug Perhaps we ought to send all of our meteorites TO the Moon rather than be thinking the other way around. Whether you're Glorieta or just Admire: In this new frontier - All meteorites are curated equally and endowed by their maker with new life and liberty of open assembly for all. *think: your Howardites - Original Message - From: Mr EMan [EMAIL PROTECTED] To: Bob Evans [EMAIL PROTECTED]; Meteorite-list@meteoritecentral.com Sent: Friday, September 01, 2006 12:51 AM Subject: Re: [meteorite-list] Meteorites on the moon Actually, physics-ly speaking, Earth holds far more meteorites than the moon does. Be it remembered, that without an atmosphere to slow them, the bulk of meteoroids arrive at full cosmic speeds and are most certainly vaporized by the collision. I haven't done the math but under an extreme glancing blow where the meteoroid is playing catch up, there might be a successive slowing of splashed fragments and some meteorite material may exist on the surface from time to time. Meteorites that may defy physics in this manner are going to be pulverized into the regolith over time by the constant influx of micrometeoroids. That said, a howardite by definition is composed of substantial clasts of meteoroids from other bodies and they too have arrived at cosmic speeds, so there is hope to find clast on the moon of parent bodies no longer in existence. The moon may be the last repository for discovering the nature of the Early Bombardment episode 3.85 billion years ago. The lunar soil probably contains pockets of meteorite enriched regolith tilled under the surface by contemporary impacts and subsequently tilled back to the surface by recent impacts. This is the impetus to go to the far side for sample returns. I talked once to Charlie Duke --the only geologist thus far to walk on the moon, about the very topic and he said that they did see small furrows where rocks had rolled/bounced along the surface but never the end of a track to see what type rock was sitting there. One small meteorite was recovered in the Apollo Program (Hadley Rill?).(Details anyone?) Didn't it possess impact pockmarks? As to mounting a mission to the moon to recover meteorites, a meteorite not in situ from its parent body may be a curiosity but is far less valuable scientifically than an asteroid sample return mission. I personally would accept either type mission if NASA were willing to send me and bring me back. In fact I have set up a paypal account for donations... for me and my wifeMorganMorgan Fairchild -- yeah that's the ticket... I guess we'll have to wait and see for sure but science suggests that substantial pristine meteorites will be exceedingly rare on the moon. Elton --- Bob Evans [EMAIL PROTECTED] wrote: Can you imagine hunting meteorites on the moon? Crustless Diogenites, Eucrites, Howardites strewnabout everywhere. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Canyon Diablo impact velocity
= At what velocity do you think Canyon Diablo impacted? RODDY D.J. and SHOEMAKER E.M. (1995) Meteor Crater: Summary of impact conditions (Meteoritics 30-5, 1995, A567, excerpts): .. the meteorite had a velocity in the range of about 13 to 20 km/s, probably in the lower part of this range ..., the coherent meteorite diameter is estimated to have been 45-50 m with a mass of 300,000 - 400,000 t, i.e., large enough to experience less than 1% in both mass ablation and velocity deceleration. During this time, minor flake-off of the meteorite's exterior produced a limited number of smaller fragments that followed the main mass to the impact site, but at greatly reduced velocities. Best wishes, Bernd __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Meteorites on the moon
Couple of points One small meteorite was recovered in the Apollo Program (Hadley Rill?).(Details anyone?) Didn't it possess impact pockmarks? Yes. There's one of the Apollo photos clearly shows an ipact mark. A tiny crater in a large rock. I believe this shows that there's not likely to be much of anything left on the moon if it hits it. Statistically, if memory serves me right, lunar impacts impacts are rarer than Earth ones due to the weak gravity of the moon and not just it's smaller cross-section. Rob McC __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Meteorites on the moon
Hi, Rob, List, The ratio of the areas of Earth:Moon is roughly 16:1, but the deflection caused by Earth's stronger gravitational reach makes the ratio of impacts about 18:1. The lunar impact rate is a more accurate measure of the meteroid flux in the vicinity of the Earth's orbit than the Earth's impact rate is, for that reason. Even lunar gravity has a focusing effect in attracting meteroids. The actual space flux of meteroids is calculated to be about 85% to 86% of the rate implied by the impact rate on the Earth. It's much harder to figure out an accurate rate of impacts on the Earth, though. As a result, we have no firm figure to multiply by 0.85. Sterling K. Webb - Original Message - From: Rob McCafferty [EMAIL PROTECTED] To: meteorite-list@meteoritecentral.com Sent: Friday, September 01, 2006 3:01 AM Subject: Re: [meteorite-list] Meteorites on the moon ...lunar impacts are rarer than Earth ones due to the weak gravity of the moon and not just it's smaller cross-section. Rob McC __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Meteorites on the moon
Hi Sterling, Rob, List - There is no combined model of asteroid and comet flux which accounts for the observed craters on all bodies in our solar system. The mechanics of the Earth-Moon system have never really been worked out. We really don't know if the Moon gets hit more often than the Earth ot less. Shoemaker, who did a lot of the early Apollo era work, later renounced a lot of it. By the way, no matter what you hear on TV, the impact of a comet killed the dinosaurs, not the impact of an asteroid. thoughts at 4 in the morning, godd hunting, Ed --- Sterling K. Webb [EMAIL PROTECTED] wrote: Hi, Rob, List, The ratio of the areas of Earth:Moon is roughly 16:1, but the deflection caused by Earth's stronger gravitational reach makes the ratio of impacts about 18:1. The lunar impact rate is a more accurate measure of the meteroid flux in the vicinity of the Earth's orbit than the Earth's impact rate is, for that reason. Even lunar gravity has a focusing effect in attracting meteroids. The actual space flux of meteroids is calculated to be about 85% to 86% of the rate implied by the impact rate on the Earth. It's much harder to figure out an accurate rate of impacts on the Earth, though. As a result, we have no firm figure to multiply by 0.85. Sterling K. Webb - Original Message - From: Rob McCafferty [EMAIL PROTECTED] To: meteorite-list@meteoritecentral.com Sent: Friday, September 01, 2006 3:01 AM Subject: Re: [meteorite-list] Meteorites on the moon ...lunar impacts are rarer than Earth ones due to the weak gravity of the moon and not just it's smaller cross-section. Rob McC __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
AW: [meteorite-list] Meteorites on the moon
There wer even 2 meteorites brought back from Moon say the Catalogue: Bench Crater Was an CM1 fragment in soil sample 12037 collected from Apollo 12 And Hadley Rille, A fragment of 3mg in soil sample 15602 from Apollo 15. Was EH. Humm perhaps we all should check our regolth brecciae and HEDs to get an entry for each xenolithic clast in the Bulletin :-) Buckleboo! Martin -Ursprüngliche Nachricht- Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Im Auftrag von Rob McCafferty Gesendet: Freitag, 1. September 2006 10:01 An: meteorite-list@meteoritecentral.com Betreff: Re: [meteorite-list] Meteorites on the moon Couple of points One small meteorite was recovered in the Apollo Program (Hadley Rill?).(Details anyone?) Didn't it possess impact pockmarks? Yes. There's one of the Apollo photos clearly shows an ipact mark. A tiny crater in a large rock. I believe this shows that there's not likely to be much of anything left on the moon if it hits it. Statistically, if memory serves me right, lunar impacts impacts are rarer than Earth ones due to the weak gravity of the moon and not just it's smaller cross-section. Rob McC __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Meteorites on the moon
Great thread you started Bob. Jerry Flaherty - Original Message - From: Bob Evans [EMAIL PROTECTED] To: Meteorite-list@meteoritecentral.com Sent: Thursday, August 31, 2006 11:54 PM Subject: [meteorite-list] Meteorites on the moon Can you imagine hunting meteorites on the moon? Crustless Diogenites, Eucrites, Howardites strewnabout everywhere. Pristine Pallasites unaltered by atmospheric pressure or humidity sticking out of the lunar dust like a gem. How excited Nasa was when they found one on Mars. I'm surprised there wasn't a manless mission planned to go to the moon to extract and return some of these pristine meteorites utilizing a rover. Obviously it would be tremendously expensive, but, compared to what is spent on the mars mission as well as expeditions in the arctic its a no - brainer. The moon is a meteorite goldmine. 100% impact rates, craters everywhere pinpointing the spot of impact. I wonder if Nasa found one gram out of the relatively miniscule amount of specimens returned from the moon to be of non-lunar origin. I believe if we want to make monumental advancements in Meteoritics we need to take advantage of the abundance on the moon. Who knows what never before seen meteorite types are laying up there right now. What do you think, Mike? You don't have to worry about any Norwegian export laws. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: AW: [meteorite-list] Meteorites on the moon
Fascinating piece of info Martin Even as I clicked send on my last post I had a nagging thought that there really ought to be tiny little fragments of all the types in the regolith somewhere. I know NWA3136 is meant to have microscopic bits of iron in it. Is this from meteorite impact does anyone know? Rob McC --- Martin Altmann [EMAIL PROTECTED] wrote: There wer even 2 meteorites brought back from Moon say the Catalogue: Bench Crater Was an CM1 fragment in soil sample 12037 collected from Apollo 12 And Hadley Rille, A fragment of 3mg in soil sample 15602 from Apollo 15. Was EH. Humm perhaps we all should check our regolth brecciae and HEDs to get an entry for each xenolithic clast in the Bulletin :-) Buckleboo! Martin -Ursprüngliche Nachricht- Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Im Auftrag von Rob McCafferty Gesendet: Freitag, 1. September 2006 10:01 An: meteorite-list@meteoritecentral.com Betreff: Re: [meteorite-list] Meteorites on the moon Couple of points One small meteorite was recovered in the Apollo Program (Hadley Rill?).(Details anyone?) Didn't it possess impact pockmarks? Yes. There's one of the Apollo photos clearly shows an ipact mark. A tiny crater in a large rock. I believe this shows that there's not likely to be much of anything left on the moon if it hits it. Statistically, if memory serves me right, lunar impacts impacts are rarer than Earth ones due to the weak gravity of the moon and not just it's smaller cross-section. Rob McC __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] New USA Rumuruti type 3 chondrite
Hi Sonny and All Wow !!! How Cool !! What was the classification of the grasshopper ?? Happy Huntin John B. - Original Message - From: Ruben Garcia [EMAIL PROTECTED] To: [EMAIL PROTECTED]; meteorite-list@meteoritecentral.com Sent: Thursday, August 31, 2006 8:08 PM Subject: Re: [meteorite-list] New USA Rumuruti type 3 chondrite Congrats Sonny, All that had work is really paying off! I can't wait to see what you find nextLunar maybe. Ruben __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] New USA Rumuruti type 3 chondrite
On Fri, 1 Sep 2006 05:50:19 -0700, you wrote: Wow !!! How Cool !! What was the classification of the grasshopper ? Carbonaceous. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: AW: [meteorite-list] Meteorites on the moon
A list member asked about the metal in NWA 3136, A Basaltic Lunar Regolith Breccia. The metal is definitely comes from the impactor (another meteorite) and some of these metal clasts are up to 3mm across. I guess this means a lot of collectors have samples of meteorites that hit the moon. Another list member mentioned that Charlie Duke was the only geologist to walk the moon. It is actually Harrison Schmitt that holds this title. Here is a link to his bio: http://www.daviddarling.info/encyclopedia/S/Schmitt.html Kind Regards, Adam Hupe The Hupe Collection Team LunarRock IMCA 2185 [EMAIL PROTECTED] - Original Message - From: Rob McCafferty [EMAIL PROTECTED] To: meteorite-list@meteoritecentral.com Sent: Friday, September 01, 2006 5:47 AM Subject: Re: AW: [meteorite-list] Meteorites on the moon Fascinating piece of info Martin Even as I clicked send on my last post I had a nagging thought that there really ought to be tiny little fragments of all the types in the regolith somewhere. I know NWA3136 is meant to have microscopic bits of iron in it. Is this from meteorite impact does anyone know? Rob McC --- Martin Altmann [EMAIL PROTECTED] wrote: There wer even 2 meteorites brought back from Moon say the Catalogue: Bench Crater Was an CM1 fragment in soil sample 12037 collected from Apollo 12 And Hadley Rille, A fragment of 3mg in soil sample 15602 from Apollo 15. Was EH. Humm perhaps we all should check our regolth brecciae and HEDs to get an entry for each xenolithic clast in the Bulletin :-) Buckleboo! Martin -Ursprüngliche Nachricht- Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Im Auftrag von Rob McCafferty Gesendet: Freitag, 1. September 2006 10:01 An: meteorite-list@meteoritecentral.com Betreff: Re: [meteorite-list] Meteorites on the moon Couple of points One small meteorite was recovered in the Apollo Program (Hadley Rill?).(Details anyone?) Didn't it possess impact pockmarks? Yes. There's one of the Apollo photos clearly shows an ipact mark. A tiny crater in a large rock. I believe this shows that there's not likely to be much of anything left on the moon if it hits it. Statistically, if memory serves me right, lunar impacts impacts are rarer than Earth ones due to the weak gravity of the moon and not just it's smaller cross-section. Rob McC __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] What Put 2 Holes in Roof in Indiana?
http://www.indystar.com/apps/pbcs.dll/article?AID=/20060901/NEWS01/609010459/1006/NEWS01 What put 2 holes in roof? Though no fragments were found, one theory is that home was hit by a meteorite By James A. Gillaspy IndyStar.com (Indiana) September 1, 2006 CARMEL, Ind. -- There's a scientist in Bloomington who plans to travel here the day Mick and Mary Zakrajsek fix the two tennis ball-sized holes in their roof. The physical evidence points to a possible meteorite fall, said research scientist Nelson R. Shaffer of the Indiana Geological Survey. But no meteorite has been recovered to date. Shaffer, the author of Indiana Meteorites -- Close Encounters from Outer Space, hopes to confirm his suspicions with an inspection of the damage caused by the unidentified falling object that penetrated the Zakrajseks' Foster Estates home last month. In the history of humanity, there is a handful of times when meteorites fell and hit a building of any sort, Shaffer said. But it does happen. Firefighters responding to reports of an explosion and smoke at 3198 Hazel Foster Drive, near 146th Street and U.S. 31, think it happened there on Aug. 12. They're no experts on rocks from space, but the firefighters have no better explanation for the holes in the wall and roof of the Zakrajseks' two-story home in a fashionable neighborhood. Basically, we were clueless at the time as to what it could have been, said Carmel Fire Lt. Alan Young, whose crew found no fire on arrival and finally began to wonder if the origin of the damage was not only foreign to them but also not of this Earth. Young said some of them knew that Saturday was one of two days when a particular meteor shower was expected to be most active. But a meteorite? I don't know what meteorite rubble looks like, so I don't know what I'd be looking for in the first place, Young said. To find someone who did know, Mary Zakrajsek, 46, made the call to Bloomington and left a message about their suspicions. He called me within five minutes, she said of Shaffer. And he was here in an hour. After an initial examination and more analyses back in Bloomington, Shaffer has been unable to distinguish between possible meteorite fragments and roofing particles. He's hoping tests on housing materials to be removed upon repair will be more helpful. The disintegration is problematic, Shaffer said of the firefighters' theory that the puff of rooftop smoke seen by a neighbor was the meteorite disintegrating as it traveled through roof decking and plywood siding behind a bedroom wall. He would have expected the rock or its fragments to remain, he explained. Still, there is strong evidence. A number of people reported hearing sonic booms. This implies an object going very fast and not something that just fell off an airplane or was thrown off, Shaffer said. He also points to the magnetic properties of the tiny particles he's collected, the spherical shape of the entry holes and the perceived smoke that could have been a dust trail. My plan is to come up when the restoration people come and cut out the damaged wall and look behind the wall, he said. Neighbors who heard the boom and felt it rattle their windows and homes are convinced the community has experienced a visitor from space. It was a huge explosion, recalled Sandy Fugate, who was walking her dog when the object hit about 10:49 a.m. We both jumped out of our skin. Mick Zakrajsek, 48, a financial manager, heard the explosion while out walking in the neighborhood. His wife likened the sound to a huge hammer that pounded the roof and sent her 21-year-old daughter rushing first upstairs and then back down to evacuate the family. People were coming from all over, because everybody had heard it, said Jessica Zakrajsek. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Anyone know this Moroccan Meteorite Dealer?
Hi List, I need some help. I have recently been contacted by a Moroccan meteorite dealer named Abdellah OAAF. He wants to sell me some meteorites but I am a little worried its a scam. Does anyone know of him? Is he a reputable dealer? I'd hate to send money to morocco and then hope I get a few nice meteorites. He did say that he's sold to a few American collectors I'm hoping maybe someone on the list has dealt with him and can let me know about his reputation etc... Any help would be appreciated. Ruben Garcia __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Anyone know this Moroccan Meteorite Dealer?
Good luck! Haven't you seen the other list members who have been ripped off sending money to Morocco and Burkina Faso? Mike Farmer --- Ruben Garcia [EMAIL PROTECTED] wrote: Hi List, I need some help. I have recently been contacted by a Moroccan meteorite dealer named Abdellah OAAF. He wants to sell me some meteorites but I am a little worried its a scam. Does anyone know of him? Is he a reputable dealer? I'd hate to send money to morocco and then hope I get a few nice meteorites. He did say that he's sold to a few American collectors I'm hoping maybe someone on the list has dealt with him and can let me know about his reputation etc... Any help would be appreciated. Ruben Garcia __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] The importance of lunar meteorites
Hi all - Naturally, then, the samples from the Moon preserve a record of what hit and when - whether asteroid or comet. Preserved clasts (from rear spalling) can give some idea of impactor size. Further, the samples preserve a record of what type of asteroid, and when. To top it off, that record goes back to the LPBE. Of course, that's of limited use for the problem at hand, as the impact dynamics of the Earth-Moon system have never been established. We don't know if the Moon acted a shield for Earth, or vice versa. That's why the cratering rates for the moons of the outer gas giants are so important. Another way of examining the problem is by using the historical record, but the difficulty is that this only samples a small period of time (ca. 10,000 years, or 6,000,000 years when human genetic information is considered). E.P. Grondine Man and Impact in the Americas check amazon.com for availability --- E.P. Grondine [EMAIL PROTECTED] wrote: Hi Sterling, Rob, List - There is no combined model of asteroid and comet flux which accounts for the observed craters on all bodies in our solar system. The mechanics of the Earth-Moon system have never really been worked out. We really don't know if the Moon gets hit more often than the Earth ot less. Shoemaker, who did a lot of the early Apollo era work, later renounced a lot of it. By the way, no matter what you hear on TV, the impact of a comet killed the dinosaurs, not the impact of an asteroid. thoughts at 4 in the morning, godd hunting, Ed --- Sterling K. Webb [EMAIL PROTECTED] wrote: Hi, Rob, List, The ratio of the areas of Earth:Moon is roughly 16:1, but the deflection caused by Earth's stronger gravitational reach makes the ratio of impacts about 18:1. The lunar impact rate is a more accurate measure of the meteroid flux in the vicinity of the Earth's orbit than the Earth's impact rate is, for that reason. Even lunar gravity has a focusing effect in attracting meteroids. The actual space flux of meteroids is calculated to be about 85% to 86% of the rate implied by the impact rate on the Earth. It's much harder to figure out an accurate rate of impacts on the Earth, though. As a result, we have no firm figure to multiply by 0.85. Sterling K. Webb - Original Message - From: Rob McCafferty [EMAIL PROTECTED] To: meteorite-list@meteoritecentral.com Sent: Friday, September 01, 2006 3:01 AM Subject: Re: [meteorite-list] Meteorites on the moon ...lunar impacts are rarer than Earth ones due to the weak gravity of the moon and not just it's smaller cross-section. Rob McC __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Meteorites on the moon
One small meteorite was recovered in the Apollo Program (Hadley Rill?).(Details anyone?) Didn't it possess impact pockmarks? According to my Meteorites from A to Z (2nd ed.): Bench Crater; CM1 Hadley Rille; EH Already we're finding more than the usual L6 and H5s. However, being exotics, would these rocks have stood out more than the usual Lunar detritus? Both meteorites were pretty tiny, in the under 1g range; I expect they were scooped up in a random sampling of the lunar surface rather than being hunted, i.e., oh look, here's a meteorite! Tracy Latimer __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] IMCA Insights, Sept. 06, and IMCA Elections
Dear List Members, dear IMCA Members, This is a message that is mainly for the IMCA Members who don't subscribe to the IMCA Mailing List, or who have changed their email address more recently and haven't updated their information with us. Right now, we are having our annual public elections for the IMCA Board of Directors, and last year many of you complained that you weren't aware of the elections at all. To avoid this, we decided to go a bit more public, this year, and we devoted the current issue of IMCA Insights, published in cooperation with Meteorite-Times, to the annual elections. Please make sure to read this: http://imca.repetti.net/articles/IMCA-Insights9.htm Normally, I would have waited for Paul and Jim to announce it together with the September issue of Meteorite-Times; but since it looks as if Meteorite-Times won't be up in time, we decided to go ahead, and to send you the link right now. There are only 9 days left for completing the nomination process, and so, if you are an IMCA member in good standing, you only have 9 more days to tell the Board that you are a Candidate. Please find all the other relevant information in the September issue of IMCA Insights. Thanks, and have a great weekend! All the best, Norbert Classen Vice President, IMCA Inc. www.IMCA.cc __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] NWA 4441 Shock and Weathering
Dear List Members, To all who have purchased my new CO3.2, NWA 4441, I just received the shock and weathering grades from Dr. Bunch. Shock is 2 and Weathering is also 2. Thank you again for your bids and have a great Labor Day weekend. Best regards, Greg Greg Hupe The Hupe Collection NaturesVault (eBay) [EMAIL PROTECTED] IMCA 3163 __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Anyone know this Moroccan Meteorite Dealer?
Hi List, I need some help. I have recently been contacted by a Moroccan meteorite dealer named Abdellah OAAF. He wants to sell me some meteorites but I am a little worried its a scam. Does anyone know of him? Is he a reputable dealer? I'd hate to send money to morocco and then hope I get a few nice meteorites. He did say that he's sold to a few American collectors I'm hoping maybe someone on the list has dealt with him and can let me know about his reputation etc... Any help would be appreciated. Ruben Garcia Hi If he can send You stuff first and payment will be later, then there is no stress for You. If he dont like it, leave him. Im sure he can offer only ordinary material for high prices, so there is usually no big deal in this kind of offers. -[ MARCIN CIMALA ]-[ I.M.C.A.#3667 ]- http://www.Meteoryt.net [EMAIL PROTECTED] http://www.PolandMET.com [EMAIL PROTECTED] http://www.Gao-Guenie.com GSM +48(607)535 195 [ Member of Polish Meteoritical Society ] __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Anyone know this Moroccan Meteorite Dealer?
also, ask yourself when it was any well known, reputable dealers contacted you personally, out of the blue, to send you stones. they don't. not being fools, they announce any material for sale via the list, ebay, general newsletters, etc. there's usually a reason someone doesn't want to operate in the light of day. hope everyone has a safe and happy holiday. take care susan - Original Message - From: PolandMET [EMAIL PROTECTED] To: Ruben Garcia [EMAIL PROTECTED]; meteorite-list@meteoritecentral.com Sent: Friday, September 01, 2006 1:12 PM Subject: Re: [meteorite-list] Anyone know this Moroccan Meteorite Dealer? Hi List, I need some help. I have recently been contacted by a Moroccan meteorite dealer named Abdellah OAAF. He wants to sell me some meteorites but I am a little worried its a scam. Does anyone know of him? Is he a reputable dealer? I'd hate to send money to morocco and then hope I get a few nice meteorites. He did say that he's sold to a few American collectors I'm hoping maybe someone on the list has dealt with him and can let me know about his reputation etc... Any help would be appreciated. Ruben Garcia Hi If he can send You stuff first and payment will be later, then there is no stress for You. If he dont like it, leave him. Im sure he can offer only ordinary material for high prices, so there is usually no big deal in this kind of offers. -[ MARCIN CIMALA ]-[ I.M.C.A.#3667 ]- http://www.Meteoryt.net [EMAIL PROTECTED] http://www.PolandMET.com [EMAIL PROTECTED] http://www.Gao-Guenie.com GSM +48(607)535 195 [ Member of Polish Meteoritical Society ] __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Anyone know this Moroccan Meteorite Dealer?
Thanks All, I've received some very useful information about him and have also found several people that have bought some nice meteorites from him. I'll proceed with caution, Thanks again. Ruben Garcia __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Hadley Rille (EH)
Best wishes, Bernd RUBIN A.E. (1997) The Hadley Rille enstatite chondrite and its agglutinate-like rim: Impact melting during accretion to the Moon (Meteoritics 32-1, 1997, 135-141): Abstract - Hadley Rille is a millimeter-size EH chondrite containing euhedral and acicular enstatite grains, kamacite globules and preferentially aligned silicate aggregates separated by elongated kamacite-rich patches. The Hadley Rille chondrite was significantly impact melted when it accreted to the lunar regolith at relative velocities of greater than or equal to 3 km s-1; ~65-75% of the chondrules present initially were melted. During the impact, portions of the local regolith were melted and an agglutinate-like rim formed around the chondritic projectile; the rim consists of flow-banded vesicular glass, blebs of troilite and low-Ni metallic Fe, rock fragments, glass(?) shards and mineral grains. The mineral grains include enstatite (which is otherwise absent from the Moon and must have been derived from the projectile) and poorly characterized, micrometer-size phases enriched in LREE (which probably formed during the impact). Several of the rock fragments contain greater than or equal to 33 mg/g Cl, probably derived through impact-induced volatilization of Cl from chondrule mesostases in the EH projectile. Hadley Rille, 26° 26.0' N / 3° 39.33' E, found 1971 July-August - Enstatite chondrite (EH): An object in the 1-2 mm size fraction of soil sample 15602,29 was recovered by Apollo 15 astronauts at Station 9, near Hadley Rille; the original mass, estimated from the thin section, was ~3 mg. Mineralogy and classification (Haggerty, 1972, and A. Rubin, UCLA): contains enstatite, kamacite (2.9-3.2% Si), niningerite, silica, schreibersite, troilite, albite, and daubreelite. Specimen: Lunar Sample Curator, JSC (Met.Bull. 81, 1997, A160). __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] S-A Crater photo link
Hi All, A while back there were a couple of photo links posted of Sikhote-Alins with impact craters in them. Then, I heard a list member in Washington State set up a web page with photos of these beauties. Can someone email me that URL off list or tell me who it was? Meanwhile, here is one I got that I think is stupendous. The first is a regular photo and the second is a close up: (Note, they both wrap around, so, will require a copy-paste function to work - they will NOT work as a click-to [unless your font size is smaller than mine and they do not wrap around]) http://home-and-garden.webshots.com/photo/553660393/2692608480035542431cxnhG g http://home-and-garden.webshots.com/photo/553660393/2541664260035542431bBcEj Z Thanks, Michael __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Mars Odyssey THEMIS Images: August 28 - September 1, 2006
MARS ODYSSEY THEMIS IMAGES August 28 - September 1, 2006 o Feature of the Week: Nili Fossae http://themis.asu.edu/feature o Channel (Released 28 August 2006) http://themis.asu.edu/zoom-20060828a o Meridiani (Released 29 August 2006) http://themis.asu.edu/zoom-20060829a o Avernus Colles (Released 30 August 2006) http://themis.asu.edu/zoom-20060830a o Sulci Gordii (Released 31 August 2006) http://themis.asu.edu/zoom-20060831a o Alluvial Fans (Released 01 September 2006) http://themis.asu.edu/zoom-20060901a All of the THEMIS images are archived here: http://themis.asu.edu/latest.html NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Office of Space Science, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in co.oration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] How To Observe SMART-1's Impact on the Moon
http://www.newscientistspace.com/article/dn9891-how-to-observe-smart1s-impact-on-the-moon.html How to observe SMART-1's impact on the Moon David Shiga New Scientist 01 September 2006 When it collides with the Moon on Saturday night, the SMART-1 spacecraft might create a bright spot of light that could be visible using a simple pair of binoculars. The effect could last about a minute - but will only be visible from some parts of the world. The European Space Agency's SMART-1 probe has been orbiting and studying the Moon since late 2005. But it is almost out of fuel, and mission planners have adjusted its orbit to make it crash on the Moon at a time and place that will be visible from Earth (see Lunar probe aims to crash into the Moon http://www.newscientistspace.com/article/dn9830-lunar-probe-aims-to-crash-into-the-moon.html). The expected impact time is 1041 PDT on Saturday (0541 GMT on Sunday). It will be visible in an area that extends from the central parts of North and South America westward as far as Australia. Unfortunately, observers on the eastern coast of the Americas - except for Florida - and in Europe and Asia will not be able to view the crash. The spacecraft will come screaming in at an angle of just 1° relative to the lunar surface. So there is a small chance that the spacecraft could crash earlier, at 0036 GMT, if it hits the rim of a crater called Clausius before it can reach the planned impact site. If it were to hit the rim, whose height is not known precisely, the impact would be visible mainly from South America and the North American East coast. Final burn However, mission planners are performing one last burn on Friday to raise the spacecraft's orbit by 600 metres and prevent an early crash. We want to be sure we avoid this rim, SMART-1 project scientist Bernard Foing told New Scientist. SMART-1 will be travelling at 2 kilometres per second when it hits the surface and is expected to blast out a crater 3 to 10 metres across. Heat from the impact should vaporise rock and soil in the area, creating a flash of light that will last about 0.1 second. The flash itself will probably be too faint to see except with very large telescopes. But the impact will also throw up a plume of material that could be much brighter. The Moon will be a little more than half lit, with the impact site on the dark side, not far from the Moon's south pole. If the plume is lofted as much as 20 kilometres above the surface, it will reach sunlight. If only 1% of the ejected material rises that high, this would create a cloud with a brightness of about magnitude 6, which would be visible with binoculars or a small telescope, Foing says. The cloud might stay lit for a few tens of seconds before falling back to the surface, he says. Foing estimates the cloud might be about 10 kilometres across. Relatively large telescopes may be able to resolve smaller structures within the cloud, but small telescopes or binoculars will probably only show a point of light, he says. Listen to Foing describe the impact on New Scientist's latest podcast http://media.newscientist.com/data/av/podcast/newsci-20060901-another-one-bites-the-moon-dust.mp3. Known impactor Scientists hope to learn more about the physics of impacts by studying the SMART-1 crash. Impacts are important in the history of the solar system, Foing says. They shape the planets at different scales. Scientists have managed to glimpse meteorites hitting the Moon before, and SMART-1 may resemble these impacts. Watch a movie of a meteorite hitting the Moon http://www.spaceweather3.com/swpod2006/14jun06/movie760.gif. But Foing says the SMART-1 impact will be more informative than previous observations of meteorite impacts because the mass and speed of the impacting object are known precisely ahead of time. A Japanese space probe called Hiten was also observed from Earth when it was intentionally crashed into the Moon in 1993. But those previous impacts have not been as widely observed as the SMART-1 crash will be, Foing says. About a dozen professional observatories will watch for the impact, including NASA's Infrared Telescope Facility in Hawaii, US, and the Earth-orbiting Odin radio telescope. __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] A Box-full of....... (surprise!) - AD
Hello Everybody, A few weeks ago in Colorado Springs I met a very nice gentleman with an interesting story, and a box full of .. Well, if you want to know what he had in his box you will have to go to: http://www.impactika.com/nininger.htm I am sure you won't regret it! ;-) And if you are coming to Denver, this will be available for everybody to see, some time in Blaine's room, some time you will just have to call me. Do let me know if you have any questions. Enjoy!! Anne M. Black www.IMPACTIKA.com [EMAIL PROTECTED] President, I.M.C.A. Inc. www.IMCA.cc __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] A Box-full of....... (surprise!) - AD
NICE SCORE ANNE! I hunted the desert all day today and found a few wild horses. Dave F. [EMAIL PROTECTED] wrote: Hello Everybody, A few weeks ago in Colorado Springs I met a very nice gentleman with an interesting story, and a box full of .. Well, if you want to know what he had in his box you will have to go to: http://www.impactika.com/nininger.htm I am sure you won't regret it! ;-) And if you are coming to Denver, this will be available for everybody to see, some time in Blaine's room, some time you will just have to call me. Do let me know if you have any questions. Enjoy!! Anne M. Black www.IMPACTIKA.com [EMAIL PROTECTED] President, I.M.C.A. Inc. www.IMCA.cc __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Anyone know this Moroccan Meteorite Dealer?
Hi I have dealt with him once. He sent me a group of pictures of different parcels of meteorites. They looked rather nice and fresh. I did a little back and forth on the price per gram and we both settled on a price. I wired him the money Western Union. It appears that he had me wire the money directly to someone who may have been the REAL owner of the rocks. I did not wire the money to him. He shipped the package on July 14th, 2006. On Aug. 4th, 2006 the package cleared US customs. After these rocks took 4.6 billion years to get here, the US Post Office has managed to lose the package in 4 weeks. They claim there is nothing they can do about it, even though I had a tracking number (that's how I got the info on the package clearing customs). I have heard of a few other people dealing with him and they have received what they ordered. Also, the ex-editor of the Australian meteorite magazine (I forgot his name right now) confirmed to me, though an email, that this person is reliable. My only advice would be to have this person send the package DHL or something like that. It may cost you a bit more money, but it could be worth it instead of losing over 200 dollars to the US Post Office like I did. Mr. Farmer makes a good point, but it seems in this case that your risk is small. At least from this seller. And I see nothing wrong with being able to deal direct with these Moroccan dealers if they are on the up and up. That's just good capitalism as far as I can see. If the NWA stuff is drying up, and some one has access to these rocks, all the better for the collectors. If anyone has an idea of how I can get the Post Office to do their job, let me know. Both my local postmaster and the 800 customer service people just about told me to bad, so sad. Walter L. Newton Golden, Co __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Anyone know this Moroccan Meteorite Dealer?
Hi Walter, Thanks for the information, Joel Schiff was nice enough to send me a similar email. As far a USPS goes, they are horrible when it comes to over seas shipments. I once sent over $1200 worth of meteorites to Japan. It didn't take long for them to be stolen out of customs. It took less time for USPS to deny paying any claim even though I insured them. Ruben __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Southwest Airlines Magazine article
Anyone flying on Southwest Airlines this month might want to read the in flight magazine, Southwest Spirit. I am featured in an article titled Meteorite Hunter. It is 5 full pages and a very good article! Sorry, no internet link, but I am going to contact the airline to see what I can do to put it on my website. Michael Farmer __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] A Box-full of....... (surprise!) - AD
Thanks Anne. That was most enjoyable! Someone is going to get a wonderful box of goodies and memories from the past. My best, Thomas --- [EMAIL PROTECTED] wrote: Hello Everybody, A few weeks ago in Colorado Springs I met a very nice gentleman with an interesting story, and a box full of .. Well, if you want to know what he had in his box you will have to go to: http://www.impactika.com/nininger.htm I am sure you won't regret it! ;-) And if you are coming to Denver, this will be available for everybody to see, some time in Blaine's room, some time you will just have to call me. Do let me know if you have any questions. Enjoy!! Anne M. Black www.IMPACTIKA.com [EMAIL PROTECTED] President, I.M.C.A. Inc. www.IMCA.cc __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] E.T.'s display collection for sale-ad
Hello list members: I am thinning out my display collection. Most of these specimens are large and beautiful individuals that are so pretty that I just had to keep them and enjoy them for a while. They are the pick of the litter, so to speak. Many variables go into making ones decision on which specimen to add to your collection. Ive learned so much from all of you collectors about how you choose the ultimate one for a collection piece. Its a privilege to get to deal in meteorites for a living and its a joy to get to offer select specimens like these from time to time. These are some of the best or most unusual specimens that I have seen go through my hands in the past 25 years. Please write for pictures and prices. I believe that you will find the prices low and quality fantastic. Thanks, Edwin Thompson ET Meteorites [EMAIL PROTECTED] 1) Allende 1935 grams A classic complete specimen 2) Amgala 939 grams A flawless complete stone 3) Benguerir 1620 grams Fresh half stone 4) Bensour 721.5 grams Beautiful fresh stone w/ primary secondary crst 5) Dhofar 007 1636.5 grams A huge specimen of this eucrite with great crust 6) Dhofar 287 1.348 grams Half thin slice of Mare basalt 7) DOrbigny 1015 grams The huge and vesicular main mass 8) Gujba 250 grams A gorgeous end piece of this anomaly 9) NWA-2060 620 grams A large and very sexy howardite fragment 10) NWA-2690 503.5 grams Polymict eucrite with window 11) NWA 2697 1452.5 grams The main mass of a fresh and fine CV3 12) NWA-2724 397.5 grams The main mass end piece of this unique eucrite 13) Seymchen 6.25 kilograms Complete mass w/window and just few olivine 14) Taza 4.6 kilograms Stands on end in an impressive display 15) Thuathe 325.2 grams A pancake with killer crust __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
