[meteorite-list] Re: What is this?
From: Robert Beauford <wendirob_at_meteoritecentral.com>
Date: Thu Apr 22 09:44:38 2004 Message-ID: <005201c0aa55$59541a80$b24897cc_at_wendirob> This is a multi-part message in MIME format. ------=_NextPart_000_004F_01C0AA1A.AC5E32A0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Thanks Rhett, Dean, John, Michael, and everyone else! I think, based on = what you have said, that it must in fact be Dhofar 020. this makes me = even more curious. It's the first H4-5 that I have seen with no = visible metal. (although it seems from your various comments that some = examples of 020 have a few sparse visible flakes). The crust on some of = my 020 is just gorgeous and fresh looking, so I assume the alteration of = the metal is not entirely from terrestrial weathering... what sort of = 'experience' while in orbit, or formation environment results in this = degree of oxidation? I would think it would take a lot of oxygen...? = This seems very distinct even from other heavily shocked chondrites that = I have seen. Thanks again for the insights. -Robert Beauford -----Original Message----- From: meteorite-list-admin_at_meteoritecentral.com = [mailto:meteorite-list-admin_at_meteoritecentral.com]On Behalf Of Robert = Beauford Sent: Saturday, March 10, 2001 2:15 AM To: meteorite-list_at_meteoritecentral.com Subject: [meteorite-list] What is this? Any opinions on this item would be greatly appreciated. I purchased this as Dhofar 020, but I'm pretty sure it isn't... even = though I've never seen a Dhofar 020 cut. The type doesn't fit the = appearance. My first thought was that it isn't a meteorite, but after = microscopic examination I'm not sure. It looks like a highly altered = chondrite with heavy shock or melt veining (even more than is visible in = the pic). Several things that seem to have once been chondrules.... =20 Iron rich, but not a single speck of metalic metal. http://laplaza.org/~wendirob/met1temp.jpg ??? Thanks all! -Robert Beauford : ) ------=_NextPart_000_004F_01C0AA1A.AC5E32A0 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 content=3D"text/html; charset=3Diso-8859-1" = http-equiv=3DContent-Type> <META content=3D"MSHTML 5.00.2314.1000" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=3D#ffffff> <DIV><FONT size=3D2>Thanks Rhett, Dean, John, Michael,=20 and everyone else! I think, based on what you have said, = that=20 it must in fact be Dhofar 020. this makes me even more=20 curious. It's the first H4-5 that I have seen with no = visible metal.=20 (although it seems from your various comments that some examples of 020=20 have a few sparse visible flakes). The crust on some of = my 020=20 is just gorgeous and fresh looking, so I assume the alteration of the = metal is=20 not entirely from terrestrial weathering... what sort of 'experience' = while in=20 orbit, or formation environment results in this degree of = oxidation? I=20 would think it would take a lot of oxygen...? This seems very = distinct=20 even from other heavily shocked chondrites that I have seen</FONT><FONT=20 size=3D2>.</FONT></DIV> <DIV><FONT size=3D2>Thanks again for the insights.</FONT></DIV> <DIV><FONT size=3D2>-Robert Beauford</FONT></DIV> <BLOCKQUOTE=20 style=3D"BORDER-LEFT: #000000 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: = 0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px"> <BLOCKQUOTE style=3D"MARGIN-RIGHT: 0px"> <DIV align=3Dleft class=3DOutlookMessageHeader dir=3Dltr><FONT = face=3DTahoma=20 size=3D2>-----Original Message-----<BR><B>From:</B> <A=20 = href=3D"mailto:meteorite-list-admin_at_meteoritecentral.com">meteorite-list-= admin_at_meteoritecentral.com</A>=20 [<A=20 = href=3D"mailto:meteorite-list-admin_at_meteoritecentral.com">mailto:meteorit= e-list-admin_at_meteoritecentral.com</A>]<B>On=20 Behalf Of </B>Robert Beauford<BR><B>Sent:</B> Saturday, March 10, = 2001 2:15=20 AM<BR><B>To:</B> = meteorite-list_at_meteoritecentral.com<BR><B>Subject:</B>=20 [meteorite-list] What is this?<BR><BR></DIV></FONT> <DIV><FONT size=3D2>Any opinions on this item would be greatly=20 appreciated.</FONT></DIV> <DIV><FONT size=3D2>I purchased this as Dhofar 020, but I'm pretty = sure it=20 isn't... even though I've never seen a Dhofar 020 cut. = The type=20 doesn't fit the appearance.</FONT></DIV> <DIV><FONT size=3D2>My first thought was that it isn't a meteorite,=20 but after microscopic examination I'm not sure. It looks = like a=20 highly altered chondrite with heavy shock or melt veining (even = more=20 than is visible in the pic). Several things that seem to have = once=20 been chondrules.... </FONT></DIV> <DIV><FONT size=3D2>Iron rich, but not a single speck of metalic=20 metal.</FONT></DIV> <DIV><FONT size=3D2><A=20 = href=3D"http://laplaza.org/~wendirob/met1temp.jpg">http://laplaza.org/~we= ndirob/met1temp.jpg</A></FONT></DIV> <DIV><FONT size=3D2>???</FONT></DIV> <DIV><FONT size=3D2>Thanks all!</FONT></DIV> <DIV><FONT size=3D2>-Robert Beauford :=20 )</FONT></DIV></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML> ------=_NextPart_000_004F_01C0AA1A.AC5E32A0-- Received on Sun 11 Mar 2001 01:01:50 PM PST |
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