[meteorite-list] Ghubara question
From: MARK BOSTICK <thebigcollector_at_meteoritecentral.com>
Date: Thu Apr 22 10:25:42 2004 Message-ID: <BAY4-DAV135bPfb0Qq50000e7e9_at_hotmail.com> ------=_NextPart_001_000F_01C31FFB.ABDFF760 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Mark wrote: "I ran into a interesting thing while slicing a Ghubara I had. It has, on= its margin, a metal flake that is 9mm x 4mm (measured at most extent points) and is just so out of place for the rest of the metal flakes seen in this meteorite (of the pieces I have anyway) and was wondering if this is a common occurance or could it be from an impact?" Hello Mark and list, I purchased a polished Ghubara slice I think from Al Mitterling about two= years ago that has a metal "flake" that is even bigger then the one you = described. About 12mm x 7mm. I've thought about trying to etch it in ho= pes that there might be a something to see (rather then it just being one= large crystal) but have never gotten around to it. I have also seen thi= s on many other meteorites. I noticed the Hupes sent an e-mail to the li= st about several slice they have put on eBay with large metal veins and t= he like. The origin of these metal veins and our metal flakes are likely= the same, as you suggest from an impact (in space). The fact that metal= gets moved around inside a chondrite is more visible in a chondrite slic= e with an armored chondrules. =20 Some Ghubara pieces have clasps of a lighter colored matrix meteorite in = it, a reference to the violent history this meteorite has seen, so our me= tal spots are likely not that uncommon. Mark Bostick www.MeteoriteArticles.com ------=_NextPart_001_000F_01C31FFB.ABDFF760 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <HTML><BODY STYLE=3D"font:10pt verdana; border:none;"><DIV> </DIV> <= DIV>Mark wrote:</DIV> <DIV> </DIV> <DIV>"I ran into a interesting th= ing while slicing a Ghubara I had. It has, on its<BR>margin, a meta= l flake that is 9mm x 4mm (measured at most extent points)<BR>and is just= so out of place for the rest of the metal flakes seen in this<BR>meteori= te (of the pieces I have anyway) and was wondering if this is a<BR>common= occurance or could it be from an impact?"</DIV> <DIV> </DIV> <DIV>H= ello Mark and list,</DIV> <DIV> </DIV> <DIV>I purchased a polished G= hubara slice I think from Al Mitterling about two years ago that has a me= tal "flake" that is even bigger then the one you described. About 1= 2mm x 7mm. I've thought about trying to etch it in hopes that there= might be a something to see (rather then it just being one large crystal= ) but have never gotten around to it. I have also seen this on many= other meteorites. I noticed the Hupes sent an e-mail to the list a= bout several slice they have put on eBay with large metal veins and the l= ike. The origin of these metal veins and our metal flakes are likel= y the same, as you suggest from an impact (in space). The fact that= metal gets moved around inside a chondrite is more visible in a chondrit= e slice with an armored chondrules. </DIV> <DIV> </DIV> <DIV>S= ome Ghubara pieces have clasps of a lighter colored matrix meteorite in i= t, a reference to the violent history this meteorite has seen, so our met= al spots are likely not that uncommon.</DIV> <DIV> </DIV> <DIV>Mark = Bostick</DIV> <DIV><A href=3D"http://www.MeteoriteArticles.com">www.Meteo= riteArticles.com</A></DIV></BODY></HTML> ------=_NextPart_001_000F_01C31FFB.ABDFF760-- Received on Thu 22 May 2003 01:47:07 AM PDT |
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