Re: [meteorite-list] looking for classification advice for fresh find
Dear List, Thank you for all your on- and off-List reactions. In general your advice is, to have it classified, including terrestrial dating, and to try to find as much as possible information on the find of this stone. I also have some references now, from the isotope terrestrial age determination. Thanks! Rob - Original Message - From: Rob Lenssen rlens...@planet.nl To: Meteorite-list@meteoritecentral.com Sent: Tuesday, August 18, 2009 8:43 PM Subject: looking for classification advice for fresh find Dear List, I received a new meteorite directly from a Moroccan dealer last week, that looks remarkably fresh. The dealer told me the 314g stone was broken in (three) fragments by the nomad who found it. Also the name of the town of find was provided. My first thought was that it would be one of recent years falls. The dealer insists it's not. As I thought the price to be OK, I decided to buy. I studied the pieces, and compared them to my Bassikounou: The material looks whiter than Bassikounou (that again looks whiter (less grey) than Chergach to me). It has a lot of free iron (more than visible in the photographs) and few visible larger chondrules. Based on the free iron, I would not expect it to be LL like Bensour. Tested with a magnet, it is attracted strongly, but slightly less than Bassikounou an H-type chondrite. And last, the crust has almost no dust (fine sand) contamination, like Bassikounou typically has. My question is how to deal with this stone, with respect to classification. Does this stone deserve more than the standard NWA classification? Should for instance terrestrial age be determined? I would appreciate some guidance from List members who are (professionally) involved in meteorite research. http://home.planet.nl/~rlenssen/314g/314g-NWA.html Kind regards, Rob Lenssen __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] looking for classification advice for fresh find
Hello Rob, That is a very nice and fresh stone. I would say it does not represent any of the recent NWA falls. I would send it in to have it classified, and request the classifying scientist to have the terrestrial age dating performed by an approved lab. Obviously it will not get a distinct name without witnesses and GPS coords, but I think that it would be worth classifying. Good luck with it! Best regards, Greg Greg Hupe The Hupe Collection NaturesVault (eBay) gmh...@htn.net www.LunarRock.com IMCA 3163 Click here for my current eBay auctions: http://search.ebay.com/_W0QQsassZnaturesvault - Original Message - From: Rob Lenssen rlens...@planet.nl To: Meteorite-list@meteoritecentral.com Sent: Tuesday, August 18, 2009 2:43 PM Subject: [meteorite-list] looking for classification advice for fresh find Dear List, I received a new meteorite directly from a Moroccan dealer last week, that looks remarkably fresh. The dealer told me the 314g stone was broken in (three) fragments by the nomad who found it. Also the name of the town of find was provided. My first thought was that it would be one of recent years falls. The dealer insists it's not. As I thought the price to be OK, I decided to buy. I studied the pieces, and compared them to my Bassikounou: The material looks whiter than Bassikounou (that again looks whiter (less grey) than Chergach to me). It has a lot of free iron (more than visible in the photographs) and few visible larger chondrules. Based on the free iron, I would not expect it to be LL like Bensour. Tested with a magnet, it is attracted strongly, but slightly less than Bassikounou an H-type chondrite. And last, the crust has almost no dust (fine sand) contamination, like Bassikounou typically has. My question is how to deal with this stone, with respect to classification. Does this stone deserve more than the standard NWA classification? Should for instance terrestrial age be determined? I would appreciate some guidance from List members who are (professionally) involved in meteorite research. http://home.planet.nl/~rlenssen/314g/314g-NWA.html Kind regards, Rob Lenssen __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] looking for classification advice for fresh find
Hi Rob, Greg, That really does look like a fall; beautiful stone. It reminds me of Bensour a bit, although I didn't see evidenve of brecciation which is pretty prominent in the Bensour I have seen. Any chance it could be from that fall? Regards, Jim Baxter - Original Message - From: Greg Hupe gmh...@htn.net To: Rob Lenssen rlens...@planet.nl, Meteorite-list@meteoritecentral.com Sent: Tuesday, August 18, 2009 11:54:50 AM GMT -08:00 US/Canada Pacific Subject: Re: [meteorite-list] looking for classification advice for fresh find Hello Rob, That is a very nice and fresh stone. I would say it does not represent any of the recent NWA falls. I would send it in to have it classified, and request the classifying scientist to have the terrestrial age dating performed by an approved lab. Obviously it will not get a distinct name without witnesses and GPS coords, but I think that it would be worth classifying. Good luck with it! Best regards, Greg Greg Hupe The Hupe Collection NaturesVault (eBay) gmh...@htn.net www.LunarRock.com IMCA 3163 Click here for my current eBay auctions: http://search.ebay.com/_W0QQsassZnaturesvault - Original Message - From: Rob Lenssen rlens...@planet.nl To: Meteorite-list@meteoritecentral.com Sent: Tuesday, August 18, 2009 2:43 PM Subject: [meteorite-list] looking for classification advice for fresh find Dear List, I received a new meteorite directly from a Moroccan dealer last week, that looks remarkably fresh. The dealer told me the 314g stone was broken in (three) fragments by the nomad who found it. Also the name of the town of find was provided. My first thought was that it would be one of recent years falls. The dealer insists it's not. As I thought the price to be OK, I decided to buy. I studied the pieces, and compared them to my Bassikounou: The material looks whiter than Bassikounou (that again looks whiter (less grey) than Chergach to me). It has a lot of free iron (more than visible in the photographs) and few visible larger chondrules. Based on the free iron, I would not expect it to be LL like Bensour. Tested with a magnet, it is attracted strongly, but slightly less than Bassikounou an H-type chondrite. And last, the crust has almost no dust (fine sand) contamination, like Bassikounou typically has. My question is how to deal with this stone, with respect to classification. Does this stone deserve more than the standard NWA classification? Should for instance terrestrial age be determined? I would appreciate some guidance from List members who are (professionally) involved in meteorite research. http://home.planet.nl/~rlenssen/314g/314g-NWA.html Kind regards, Rob Lenssen __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] looking for classification advice for fresh find
Whatever it is, it looks very very fresh. I'd be elated if I came across a stone like that, in-situ or in my mailbox. :) On 8/18/09, James Baxter jbaxter...@pol.net wrote: Hi Rob, Greg, That really does look like a fall; beautiful stone. It reminds me of Bensour a bit, although I didn't see evidenve of brecciation which is pretty prominent in the Bensour I have seen. Any chance it could be from that fall? Regards, Jim Baxter - Original Message - From: Greg Hupe gmh...@htn.net To: Rob Lenssen rlens...@planet.nl, Meteorite-list@meteoritecentral.com Sent: Tuesday, August 18, 2009 11:54:50 AM GMT -08:00 US/Canada Pacific Subject: Re: [meteorite-list] looking for classification advice for fresh find Hello Rob, That is a very nice and fresh stone. I would say it does not represent any of the recent NWA falls. I would send it in to have it classified, and request the classifying scientist to have the terrestrial age dating performed by an approved lab. Obviously it will not get a distinct name without witnesses and GPS coords, but I think that it would be worth classifying. Good luck with it! Best regards, Greg Greg Hupe The Hupe Collection NaturesVault (eBay) gmh...@htn.net www.LunarRock.com IMCA 3163 Click here for my current eBay auctions: http://search.ebay.com/_W0QQsassZnaturesvault - Original Message - From: Rob Lenssen rlens...@planet.nl To: Meteorite-list@meteoritecentral.com Sent: Tuesday, August 18, 2009 2:43 PM Subject: [meteorite-list] looking for classification advice for fresh find Dear List, I received a new meteorite directly from a Moroccan dealer last week, that looks remarkably fresh. The dealer told me the 314g stone was broken in (three) fragments by the nomad who found it. Also the name of the town of find was provided. My first thought was that it would be one of recent years falls. The dealer insists it's not. As I thought the price to be OK, I decided to buy. I studied the pieces, and compared them to my Bassikounou: The material looks whiter than Bassikounou (that again looks whiter (less grey) than Chergach to me). It has a lot of free iron (more than visible in the photographs) and few visible larger chondrules. Based on the free iron, I would not expect it to be LL like Bensour. Tested with a magnet, it is attracted strongly, but slightly less than Bassikounou an H-type chondrite. And last, the crust has almost no dust (fine sand) contamination, like Bassikounou typically has. My question is how to deal with this stone, with respect to classification. Does this stone deserve more than the standard NWA classification? Should for instance terrestrial age be determined? I would appreciate some guidance from List members who are (professionally) involved in meteorite research. http://home.planet.nl/~rlenssen/314g/314g-NWA.html Kind regards, Rob Lenssen __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list -- . Michael Gilmer (Florida, USA) Member of the Meteoritical Society. Website - http://www.galactic-stone.com Personal Site - http://www.glassthrower.com FaceBook - http://www.facebook.com/galacticstone MySpace - http://www.myspace.com/fine_meteorites_4_sale Twitter - Twitter - http://twitter.com/GalacticStone eBay - http://shop.ebay.com/merchant/maypickle .. __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
