[meteorite-list] Of Mesosiderites & Diogenites
From: Jeff Kuyken <jeff_at_meteoritecentral.com>
Date: Thu Apr 22 10:21:06 2004 Message-ID: <00f501c34d04$7b434540$553c8690_at_mandin4f89ypwu> This is a multi-part message in MIME format. ------=_NextPart_000_00F2_01C34D58.4AA935D0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable There has been a bit of talk about the pairings of Mesosiderites and = also Metal Rich Diogenites. I have been fortunate enough to obtain a = piece of NWA 1827 (Metal-Rich Diogenite) and today a piece of NWA 1879 = (Mesosiderite). I expected these two specimens to be different, but = under a 10x loupe they don't look that dissimilar at all. Both seem to have crystal clusters but they do vary in colour a little. = The crystal in NWA 1827 is a brown/orange while NWA 1879 looks a little = closer to green/yellow. The metal in the matrix is basically = indistinguishable between the two while the crust does seem somewhat = finer and more crystallised in the Mesosiderite. All in all; both = impressive meteorites! It is very interesting to see all these (dare I say 'similar pieces') = coming onto the market together. Does anyone have any further = information or opinions on these two or other like specimens? I'd be = very interested to hear as would others I'm sure. Thanks, Jeff Kuyken I.M.C.A. #3085 www.meteoritesaustralia.com ------=_NextPart_000_00F2_01C34D58.4AA935D0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=3DContent-Type content=3D"text/html; = charset=3Diso-8859-1"> <META content=3D"MSHTML 6.00.2600.0" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=3D#ffffff> <DIV><FONT size=3D2>There has been a bit of talk about the pairings of=20 Mesosiderites and also Metal Rich Diogenites. I have been fortunate = enough to=20 obtain a piece of NWA 1827 (Metal-Rich Diogenite) and today a piece of = NWA 1879=20 (Mesosiderite). I expected these two specimens to be different, but = under a 10x=20 loupe they don't look that dissimilar at all.</FONT></DIV> <DIV><FONT size=3D2></FONT> </DIV> <DIV><FONT size=3D2>Both seem to have crystal clusters but they do vary = in colour=20 a little. The crystal in NWA 1827 is a brown/orange while NWA 1879 = looks a=20 little closer to green/yellow. The metal in the matrix is basically=20 indistinguishable between the two while the crust does seem somewhat = finer and=20 more crystallised in the Mesosiderite. All in all; both impressive=20 meteorites!</FONT></DIV> <DIV><FONT size=3D2></FONT> </DIV> <DIV><FONT size=3D2>It is very interesting to see all these (dare I say=20 'similar pieces') coming onto the market together. Does anyone have = any=20 further information or opinions on these two or other like = specimens?=20 I'd be very interested to hear as would others I'm sure.</FONT></DIV> <DIV><FONT size=3D2></FONT> </DIV> <DIV><FONT size=3D2>Thanks,</FONT></DIV> <DIV><FONT size=3D2></FONT> </DIV> <DIV><FONT size=3D2>Jeff Kuyken<BR>I.M.C.A. #3085<BR><A=20 href=3D"http://www.meteoritesaustralia.com">www.meteoritesaustralia.com</= A></FONT></DIV></BODY></HTML> ------=_NextPart_000_00F2_01C34D58.4AA935D0-- Received on Fri 18 Jul 2003 04:13:30 AM PDT |
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