Re: [meteorite-list] Question about NWA 869
Hi Melanie, I was lucky enough to get a dinner plate sized 895 gram slice of NWA 869 from Blaine Reed back in 2008. I asked him and the mass he cut to produce it weighed 84 pounds, just short of 40kg. Not sure if anyone out there knows of a larger one. The Metoritical Bulletin just says individual masses to >20kg. Best, Jim Baxter - Original Message - From: "Melanie Matthews" To: "MeteoriteList" Sent: Friday, November 4, 2011 5:28:12 PM GMT -08:00 US/Canada Pacific Subject: Re: [meteorite-list] Question about NWA 869 How big is/was the largest NWA869 mass found? --- -Melanie "MetMel" - avid meteorite collector/enthusiast from Canada! IMCA#: 2975 eBay: metmel2775 I eat, sleep and breath meteorites 24/7. __ 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 __ 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] Question about NWA 869
How big is/was the largest NWA869 mass found? --- -Melanie "MetMel" - avid meteorite collector/enthusiast from Canada! IMCA#: 2975 eBay: metmel2775 I eat, sleep and breath meteorites 24/7. __ 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 __ 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 about NWA 869
Just saw Zelimir's informative post from yesterday, if that is what he does for 869, he must have the world's best megadocumebnted collection ;-), like we all aspire. I need a correction to what I just posted a few minutes ago: I gave the amount lost to ablation in the prior post, the correct numbers for the amount dropped as meteorites are as follws and Dean Bessey's estimate for NWA 869 of 7 tons of rocks in the strewn field and fits just right for the diameters/radii given in the paper and by John, diameter (meters)max recoverable mass 0.1 0.14kg 0.3 3.8 0.5 18 1.0 141 1.5 477 2.0 1.1ton 2.5 2.2 3.0 3.8 3.5 6.1 4.0 9.0 4.5 13 5.0 18 Nice to keep these numbers in mind when we think about our well cared for boxes of space chocolates! If NWA 869 were a limited fall the prices would have sent it right back to the cosmos ... something to think about. Nice to think about next time you see your wife/husband/boy/girlfriend! Best Doug -Original Message- From: MexicoDoug To: meteorite-list Sent: Fri, Nov 4, 2011 1:58 pm Subject: Re: [meteorite-list] Question about NWA 869 Yes Mel, John's 4-5 meters in diameter statement corresponds to the average 2 meter radius in the reference. FYI, a typical entering meteoroid that experiences a loss of 92.5% (the factor of its material ton ablation as concluded by the authors) would drop this much material for our collections: diameter (meters)max recoverable mass 0.12 kg 0.350 0.5 200 1.0 1.7 ton 1.5 5.9 2.014 2.527 3.047 3.575 4.0 112 4.5 159 5.0 218 Of course the factor of 92.5% loss will vary depending on the angle it enters, speed, composition and integrity, as well as the initial size and shape, so they are all gross estimates. Kindest wishes Doufg -Original Message- From: Melanie Matthews To: MexicoDoug ; meteorite-list Sent: Fri, Nov 4, 2011 12:42 pm Subject: Re: [meteorite-list] Question about NWA 869 Found this: "Scientists figure the meteoroid that was blasted off the parent body was maybe 4 to 5 meters in diameter before atmospheric entry. Even with ablation loss of 90 to 95% about 7 tons dropped on the Sahara Desert." http://www.meteorite-times.com/micro-visions/nwa-869-inclusions/ --- -Melanie "MetMel" - avid meteorite collector/enthusiast from Canada! IMCA#: 2975 eBay: metmel2775 I eat, sleep and breath meteorites 24/7. - Original Message - From: MexicoDoug To: miss_meteor...@yahoo.ca; meteorite-list@meteoritecentral.com Cc: Sent: Friday, November 4, 2011 1:03:47 AM Subject: Re: [meteorite-list] Question about NWA 869 PS Referencing the same article that considered the free floating for 4-5 million year 869-parent meteoroid, also commented that the age of some of the regolith soil/glue that formed the fantastically brecciated meteoroid of our envy had itself exposure time of as long as 16 million years: "Assuming that 4 Ma is the time of transit irradiation, several lithologies have been preirradiated up to 16 Ma in the parent body regolith." -Original Message- From: MexicoDoug To: miss_meteorite ; meteorite-list Sent: Fri, Nov 4, 2011 3:49 am Subject: Re: [meteorite-list] Question about NWA 869 NWA 869 represents an L chondritic regolith breccia containing preirradiated components. The meteoroid had an initial radius of about 2 m with a mass of about 110 metric tons. The transit time to Earth was about 4-5 Ma. Large variations of shielding depths between samples indicate that break-up of the meteoroid must have occured high in atmosphere. This would also explain the large inferred ablation loss, which is typical for large chondrite showers. Ref: "The L3-6 Regolith Breccia Northwest Africa 869: Petrology, Noble Gases, and Cosmogenic Radionuclides" Metzler, K.; Ott, U.; Welten, K. C.; Caffee, M. W.; Franke, L. 39th Lunar and Planetary Science Conference, (Lunar and Planetary Science XXXIX), held March 10-14, 2008 in League City, Texas. LPI Contribution No. 1391., p.1120 Publication Date: 03/2008 http://www.lpi.usra.edu/meetings/lpsc2008/pdf/1120.pdf -Original Message- From: Melanie Matthews To: MeteoriteList Sent: Fri, Nov 4, 2011 2:10 am Subject: [meteorite-list] Question about NWA 869 Hi list, Are there any estimates in how long ago this wonderful meteorite fell to Earth, and how large it might have been before it entered the atmosphere? It must have been a massive meteoroid, much larger than the one that produced the Buzzard Coulees. --- -Melanie "MetMel" - avid meteorite collector/enthusia
Re: [meteorite-list] Question about NWA 869
Yes Mel, John's 4-5 meters in diameter statement corresponds to the average 2 meter radius in the reference. FYI, a typical entering meteoroid that experiences a loss of 92.5% (the factor of its material ton ablation as concluded by the authors) would drop this much material for our collections: diameter (meters)max recoverable mass 0.12 kg 0.350 0.5 200 1.0 1.7 ton 1.5 5.9 2.014 2.527 3.047 3.575 4.0 112 4.5 159 5.0 218 Of course the factor of 92.5% loss will vary depending on the angle it enters, speed, composition and integrity, as well as the initial size and shape, so they are all gross estimates. Kindest wishes Doufg -Original Message- From: Melanie Matthews To: MexicoDoug ; meteorite-list Sent: Fri, Nov 4, 2011 12:42 pm Subject: Re: [meteorite-list] Question about NWA 869 Found this: "Scientists figure the meteoroid that was blasted off the parent body was maybe 4 to 5 meters in diameter before atmospheric entry. Even with ablation loss of 90 to 95% about 7 tons dropped on the Sahara Desert." http://www.meteorite-times.com/micro-visions/nwa-869-inclusions/ --- -Melanie "MetMel" - avid meteorite collector/enthusiast from Canada! IMCA#: 2975 eBay: metmel2775 I eat, sleep and breath meteorites 24/7. - Original Message - From: MexicoDoug To: miss_meteor...@yahoo.ca; meteorite-list@meteoritecentral.com Cc: Sent: Friday, November 4, 2011 1:03:47 AM Subject: Re: [meteorite-list] Question about NWA 869 PS Referencing the same article that considered the free floating for 4-5 million year 869-parent meteoroid, also commented that the age of some of the regolith soil/glue that formed the fantastically brecciated meteoroid of our envy had itself exposure time of as long as 16 million years: "Assuming that 4 Ma is the time of transit irradiation, several lithologies have been preirradiated up to 16 Ma in the parent body regolith." -Original Message- From: MexicoDoug To: miss_meteorite ; meteorite-list Sent: Fri, Nov 4, 2011 3:49 am Subject: Re: [meteorite-list] Question about NWA 869 NWA 869 represents an L chondritic regolith breccia containing preirradiated components. The meteoroid had an initial radius of about 2 m with a mass of about 110 metric tons. The transit time to Earth was about 4-5 Ma. Large variations of shielding depths between samples indicate that break-up of the meteoroid must have occured high in atmosphere. This would also explain the large inferred ablation loss, which is typical for large chondrite showers. Ref: "The L3-6 Regolith Breccia Northwest Africa 869: Petrology, Noble Gases, and Cosmogenic Radionuclides" Metzler, K.; Ott, U.; Welten, K. C.; Caffee, M. W.; Franke, L. 39th Lunar and Planetary Science Conference, (Lunar and Planetary Science XXXIX), held March 10-14, 2008 in League City, Texas. LPI Contribution No. 1391., p.1120 Publication Date: 03/2008 http://www.lpi.usra.edu/meetings/lpsc2008/pdf/1120.pdf -Original Message- From: Melanie Matthews To: MeteoriteList Sent: Fri, Nov 4, 2011 2:10 am Subject: [meteorite-list] Question about NWA 869 Hi list, Are there any estimates in how long ago this wonderful meteorite fell to Earth, and how large it might have been before it entered the atmosphere? It must have been a massive meteoroid, much larger than the one that produced the Buzzard Coulees. --- -Melanie "MetMel" - avid meteorite collector/enthusiast from Canada! IMCA#: 2975 eBay: metmel2775 I eat, sleep and breath meteorites 24/7. __ 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 __ 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 about NWA 869
Found this: "Scientists figure the meteoroid that was blasted off the parent body was maybe 4 to 5 meters in diameter before atmospheric entry. Even with ablation loss of 90 to 95% about 7 tons dropped on the Sahara Desert." http://www.meteorite-times.com/micro-visions/nwa-869-inclusions/ --- -Melanie "MetMel" - avid meteorite collector/enthusiast from Canada! IMCA#: 2975 eBay: metmel2775 I eat, sleep and breath meteorites 24/7. - Original Message - From: MexicoDoug To: miss_meteor...@yahoo.ca; meteorite-list@meteoritecentral.com Cc: Sent: Friday, November 4, 2011 1:03:47 AM Subject: Re: [meteorite-list] Question about NWA 869 PS Referencing the same article that considered the free floating for 4-5 million year 869-parent meteoroid, also commented that the age of some of the regolith soil/glue that formed the fantastically brecciated meteoroid of our envy had itself exposure time of as long as 16 million years: "Assuming that 4 Ma is the time of transit irradiation, several lithologies have been preirradiated up to 16 Ma in the parent body regolith." -Original Message- From: MexicoDoug To: miss_meteorite ; meteorite-list Sent: Fri, Nov 4, 2011 3:49 am Subject: Re: [meteorite-list] Question about NWA 869 NWA 869 represents an L chondritic regolith breccia containing preirradiated components. The meteoroid had an initial radius of about 2 m with a mass of about 110 metric tons. The transit time to Earth was about 4-5 Ma. Large variations of shielding depths between samples indicate that break-up of the meteoroid must have occured high in atmosphere. This would also explain the large inferred ablation loss, which is typical for large chondrite showers. Ref: "The L3-6 Regolith Breccia Northwest Africa 869: Petrology, Noble Gases, and Cosmogenic Radionuclides" Metzler, K.; Ott, U.; Welten, K. C.; Caffee, M. W.; Franke, L. 39th Lunar and Planetary Science Conference, (Lunar and Planetary Science XXXIX), held March 10-14, 2008 in League City, Texas. LPI Contribution No. 1391., p.1120 Publication Date: 03/2008 http://www.lpi.usra.edu/meetings/lpsc2008/pdf/1120.pdf -Original Message- From: Melanie Matthews To: MeteoriteList Sent: Fri, Nov 4, 2011 2:10 am Subject: [meteorite-list] Question about NWA 869 Hi list, Are there any estimates in how long ago this wonderful meteorite fell to Earth, and how large it might have been before it entered the atmosphere? It must have been a massive meteoroid, much larger than the one that produced the Buzzard Coulees. --- -Melanie "MetMel" - avid meteorite collector/enthusiast from Canada! IMCA#: 2975 eBay: metmel2775 I eat, sleep and breath meteorites 24/7. __ 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 __ 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 about NWA 869
NWA 869 is a very sexy meteorite, I would marry it if i could. Daniel Furlan __ 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 about NWA 869
NWA 869 is a very sexy meteorite.. i would marry it if i could. Daniel Furlan __ 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 about NWA 869
Hi Melanie, Doug, list, Doug, your reference is very appropriate. In cataloging my collection, in some specific cases, when I feel the meteorite I am describing is important, I use to add a short introduction summarizing its historical and scientific background. Here is my write-up for NWA 869, hoping it be of help to Melanie: -- NWA 869 (Algeria, L3-6 rbr)(S3W1), found 2000, tkw: many++@7+ tons. History and scientific significance. It appears quite clear that meteorite collectors in Northwest Africa have discovered a large L chondrite strewnfield at an undisclosed location, most probably around Tindouf, Algeria. Thousands of stones has been sold under the name NWA 869 in the market places of Morocco and around the world, totaling about 7+ metric tons (April 2008, confirmed by J. Kashuba in: “Meteorite Times, Micro Visions”, March 2010), thereby making it one of the largest tkw’s to come out of NWA. The corresponding meteorid was supposed weighing about 110 tons (4+m in diameter), suggesting important ablation and fragmentation (Metzler et al., LPS, 2008; Welten et al., LPS Conf. abstract, 2010, pp 2611). Individual masses are known to range from <1 g to >20 kg. This meteorite was classified a number of times by different institutions (e.g. L4, that became later L5 –UCLA, also L3.9-6 or L6… brecciated or not), before the above final classification by A. Rubin. It is certain that NWA 869 is paired with other NWA meteorites although no systematic survey has been done. Among many examples cited are NWA 787, NWA 900, SAH 02500 (“Wadi Mellene”), possibly also “AC-001”(see the 2 samples named “NWA-aaa” below still under investigation since its find in 2000) and likely many, many more. One other famous example is NWA 904 (L5 br, also S3 W1), of which the numerous pics reported in MetBull database are strangely similar to those of NWA 869, further confirming the similarity of the samples of both meteorites in this collection . It is also possible that some stones sold as NWA 869 are not part of the same fall, although dealers are confident that most of the known masses are sufficiently distinctive from other NWA meteorites in terms of surface and internal appearance, so that the error rate should be fairly low. Although the source of the NWA 869 samples of this collection is reliable (purchase by "MV" in a Moroccan “selected reliable place” where it has been confirmed that the origin is Algeria, just as for NWA 904 (MV, personal communication), it is suggested (MetBull) that scientists are advised to confirm the classification of any specimens they obtain before publishing results under this name. Much info was published regarding the composition of that strange and very attractive meteorite. When cut and polished, the matrix is full of color and chondrules of all size, some armored. Literature reports 74% gray matrix, 20% light tan (oxide staining) texture (type 5/6 clasts), 4% shock-darkened sulfide-impregnated matrix, 1% type 3 clasts, <1% achondritic textured clasts. J. Kashuba (Met. Times, 03/ 2010) suggests it being a regolith (coarse) breccia (asteroid soil) with chunks > 5.5 cm (Kashuba’s picture in above reference; see also the extraordinary dual lithology of the 27.30 g sample described below), also containing rare foreign carbonaceous fragments. Some pieces also display large metal grains and significant troilite domains (35.42 g sample below). The terrestrial age (4.4 ± 0.7 ky) is consistent with the low degree of weathering, W1. Since the abundance of regolith breccias among L-chondrites is only ~3% [Welten et al., 2010)], NWA 869 represents a rather unique and large sample of the lithified regolith of the L-chondrite parent body - Best wishes, Zelimir MexicoDoug a écrit : NWA 869 represents an L chondritic regolith breccia containing preirradiated components. The meteoroid had an initial radius of about 2 m with a mass of about 110 metric tons. The transit time to Earth was about 4-5 Ma. Large variations of shielding depths between samples indicate that break-up of the meteoroid must have occured high in atmosphere. This would also explain the large inferred ablation loss, which is typical for large chondrite showers. Ref: "The L3-6 Regolith Breccia Northwest Africa 869: Petrology, Noble Gases, and Cosmogenic Radionuclides" Metzler, K.; Ott, U.; Welten, K. C.; Caffee, M. W.; Franke, L. 39th Lunar and Planetary Science Conference, (Lunar and Planetary Science XXXIX), held March 10-14, 2008 in League City, Texas. LPI Contribution No. 1391., p.1120 Publication Date: 03/2008 http://www.lpi.usra.edu/meetings/lpsc2008/pdf/1120.pdf -Original Message- From: Melanie Matthews To: MeteoriteList Sent: Fri, Nov 4, 2011 2:10 am Subject: [meteorite-list] Question about NWA 869 Hi list, Are the
Re: [meteorite-list] Question about NWA 869
PS Referencing the same article that considered the free floating for 4-5 million year 869-parent meteoroid, also commented that the age of some of the regolith soil/glue that formed the fantastically brecciated meteoroid of our envy had itself exposure time of as long as 16 million years: "Assuming that 4 Ma is the time of transit irradiation, several lithologies have been preirradiated up to 16 Ma in the parent body regolith." -Original Message- From: MexicoDoug To: miss_meteorite ; meteorite-list Sent: Fri, Nov 4, 2011 3:49 am Subject: Re: [meteorite-list] Question about NWA 869 NWA 869 represents an L chondritic regolith breccia containing preirradiated components. The meteoroid had an initial radius of about 2 m with a mass of about 110 metric tons. The transit time to Earth was about 4-5 Ma. Large variations of shielding depths between samples indicate that break-up of the meteoroid must have occured high in atmosphere. This would also explain the large inferred ablation loss, which is typical for large chondrite showers. Ref: "The L3-6 Regolith Breccia Northwest Africa 869: Petrology, Noble Gases, and Cosmogenic Radionuclides" Metzler, K.; Ott, U.; Welten, K. C.; Caffee, M. W.; Franke, L. 39th Lunar and Planetary Science Conference, (Lunar and Planetary Science XXXIX), held March 10-14, 2008 in League City, Texas. LPI Contribution No. 1391., p.1120 Publication Date: 03/2008 http://www.lpi.usra.edu/meetings/lpsc2008/pdf/1120.pdf -Original Message- From: Melanie Matthews To: MeteoriteList Sent: Fri, Nov 4, 2011 2:10 am Subject: [meteorite-list] Question about NWA 869 Hi list, Are there any estimates in how long ago this wonderful meteorite fell to Earth, and how large it might have been before it entered the atmosphere? It must have been a massive meteoroid, much larger than the one that produced the Buzzard Coulees. --- -Melanie "MetMel" - avid meteorite collector/enthusiast from Canada! IMCA#: 2975 eBay: metmel2775 I eat, sleep and breath meteorites 24/7. __ 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 __ 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 about NWA 869
NWA 869 represents an L chondritic regolith breccia containing preirradiated components. The meteoroid had an initial radius of about 2 m with a mass of about 110 metric tons. The transit time to Earth was about 4-5 Ma. Large variations of shielding depths between samples indicate that break-up of the meteoroid must have occured high in atmosphere. This would also explain the large inferred ablation loss, which is typical for large chondrite showers. Ref: "The L3-6 Regolith Breccia Northwest Africa 869: Petrology, Noble Gases, and Cosmogenic Radionuclides" Metzler, K.; Ott, U.; Welten, K. C.; Caffee, M. W.; Franke, L. 39th Lunar and Planetary Science Conference, (Lunar and Planetary Science XXXIX), held March 10-14, 2008 in League City, Texas. LPI Contribution No. 1391., p.1120 Publication Date: 03/2008 http://www.lpi.usra.edu/meetings/lpsc2008/pdf/1120.pdf -Original Message- From: Melanie Matthews To: MeteoriteList Sent: Fri, Nov 4, 2011 2:10 am Subject: [meteorite-list] Question about NWA 869 Hi list, Are there any estimates in how long ago this wonderful meteorite fell to Earth, and how large it might have been before it entered the atmosphere? It must have been a massive meteoroid, much larger than the one that produced the Buzzard Coulees. --- -Melanie "MetMel" - avid meteorite collector/enthusiast from Canada! IMCA#: 2975 eBay: metmel2775 I eat, sleep and breath meteorites 24/7. __ 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
[meteorite-list] Question about NWA 869
Hi list, Are there any estimates in how long ago this wonderful meteorite fell to Earth, and how large it might have been before it entered the atmosphere? It must have been a massive meteoroid, much larger than the one that produced the Buzzard Coulees. --- -Melanie "MetMel" - avid meteorite collector/enthusiast from Canada! IMCA#: 2975 eBay: metmel2775 I eat, sleep and breath meteorites 24/7. __ 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