[meteorite-list] Aswan Rock - Opinions?
Hey all, When I was in Egypt in October, I jumped onto a young half-trained CCRRAAZZYY camel and headed out into the desert. Among a few rocks (mostly fossils) I found an interesting stone which was nothing like the others in the area. I don't think it is a meteorite but it does look like some kind of breccia. It is a broken quarter sphere in shape and the photos are ofthe two broken surfaces. I'd appreciate any opinions on this one. Thelinks are: http://www.meteoritesaustralia.com/images/Aswan 1.jpg http://www.meteoritesaustralia.com/images/Aswan 2.jpg Cheers, Jeff KuykenI.M.C.A. #3085www.meteorites.com.au
RE: [meteorite-list] Aswan Rock - Opinions?
Jeff Looks like a sedimentary pressure metamorphosized aggregated conglomerate to me :). But I have seen similar looking rocks in the Alps (Austria) only over there they tend to be found near river beds, something to do with the Ice age. Could also be a type of granite or Marble there is a lot about in that area of the world (the pyramids are made of a similar stone) Mark -Original Message- From: Jeff Kuyken [mailto:[EMAIL PROTECTED] Sent: 12 December 2003 10:39 To: Meteorite List Subject: [meteorite-list] Aswan Rock - Opinions? Hey all, When I was in Egypt in October, I jumped onto a young half-trained CCRRAAZZYY camel and headed out into the desert. Among a few rocks (mostly fossils) I found an interesting stone which was nothing like the others in the area. I don't think it is a meteorite but it does look like some kind of breccia. It is a broken quarter sphere in shape and the photos are ofthe two broken surfaces. I'd appreciate any opinions on this one. Thelinks are: http://www.meteoritesaustralia.com/images/Aswan 1.jpg http://www.meteoritesaustralia.com/images/Aswan 2.jpg Cheers, Jeff Kuyken I.M.C.A. #3085 www.meteorites.com.au The information contained in this email may be commercially sensitive and/or legally privileged. It is intended solely for the person(s) to whom it is addressed. If you are not a named recipient, you are on notice of its status. Please notify the sender immediately by reply e-mail and then delete this message from your system. You must not disclose it to any other person, copy or distribute it or use it for any purpose.
[meteorite-list] Aswan Rock - Opinions?
Jeff Looks like a sedimentary pressure metamorphosized aggregated conglomerate to me... :). But I have seen similar looking rocks in the Alps (Austria) only over there they tend to be found near river beds, something to do with the Ice age. Could also be a type of granite or Marble there is a lot about in that area of the world (the pyramids are made of a similar stone) Mark -Original Message- From: Jeff Kuyken [mailto:[EMAIL PROTECTED] Sent: 12 December 2003 10:39 To: Meteorite List Subject: [meteorite-list] Aswan Rock - Opinions? Hey all, When I was in Egypt in October, I jumped onto a young half-trained CCRRAAZZYY camel and headed out into the desert. Among a few rocks (mostly fossils) I found an interesting stone which was nothing like the others in the area. I don't think it is a meteorite but it does look like some kind of breccia. It is a broken quarter sphere in shape and the photos are of the two broken surfaces. I'd appreciate any opinions on this one. The links are: http://www.meteoritesaustralia.com/images/Aswan 1.jpg http://www.meteoritesaustralia.com/images/Aswan 2.jpg Cheers, Jeff Kuyken I.M.C.A. #3085 www.meteorites.com.au The information contained in this email may be commercially sensitive and/or legally privileged. It is intended solely for the person(s) to whom it is addressed. If you are not a named recipient, you are on notice of its status. Please notify the sender immediately by reply e-mail and then delete this message from your system. You must not disclose it to any other person, copy or distribute it or use it for any purpose. __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Aswan Rock - Opinions?
Jeff list, I've spent my career with rocks like that! It is a hydrothermal breccia from a low-sulfidation epithermal vein system. You'll notice that some of the clasts have quartz/chalcedony hairlines healing jigsaw-puzzle breccias (pieces would still fit neatly back together, not jumbled or significantly displaced). This is hydraulic fracturing that forms as fluid pressures exceed lithostatic pressures, just before a hydrothermal explosion. Once the system cracks and explodes, fluid streaming does jumble and rotate most of the clasts. Your rock likely contains anomalous amounts of As, Hg, Sb, and quite possibly, Au and Ag.The rounded exterior is simply from erosion and water transport. From the photos I can't tell for sure what the clasts are, but I would guess they are rhyolite (a common associate of this style of mineralization). Merry Winter Solstice and a Happy New Orbit to All, Norm Lehrman (http://TektiteSource.com) - Original Message - From: Jeff Kuyken To: Meteorite List Sent: Friday, December 12, 2003 2:38 AM Subject: [meteorite-list] Aswan Rock - Opinions? Hey all, When I was in Egypt in October, I jumped onto a young half-trained CCRRAAZZYY camel and headed out into the desert. Among a few rocks (mostly fossils) I found an interesting stone which was nothing like the others in the area. I don't think it is a meteorite but it does look like some kind of breccia. It is a broken quarter sphere in shape and the photos are ofthe two broken surfaces. I'd appreciate any opinions on this one. Thelinks are: http://www.meteoritesaustralia.com/images/Aswan 1.jpg http://www.meteoritesaustralia.com/images/Aswan 2.jpg Cheers, Jeff KuykenI.M.C.A. #3085www.meteorites.com.au