[meteorite-list] Color of OC's by Staining or by Trace Elements
From: Jonathan E. Dongell <jdongell_at_meteoritecentral.com>
Date: Wed, 30 Mar 2011 18:03:26 -0700 Message-ID: <002c01cbef3f$710a9c50$6401a8c0_at_homepc> I'll bet a chocolate milkshake : o ) you are seeing manganese (or Mn-Fe combo) weathering. EDS can verify this. Jonathan ICMA 3922 ----- Original Message ----- From: "Thunder Stone" <stanleygregr at hotmail.com> To: <meteorite-list at meteoritecentral.com> Sent: Wednesday, March 30, 2011 9:11 AM Subject: [meteorite-list] Color of OC's by Staining or by Trace Elements Hi List: I hope everyone is well. I have a question regarding the 'color' of OC's through staining by some mineral influx or by oxidation. It appears most fresh OC's start out as a light beige or tan color; then through time the metal rusts and they often turn yellowish, orange, or brownish - this make sense. My questions is this: What other colors can they become, blue or green? What element(s) result in different colors? What different weathering processes are involved? The reason I ask is because I have a weathered meteorite that is dark green in color; it looks like jade and I have not seen any like this one before. I have also and seen OC's with a 'black' color, what causes that? Thanks, Greg S. ______________________________________________ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list at meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list Received on Wed 30 Mar 2011 09:03:26 PM PDT |
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