Hi Melanie, Jeff, Werner, and List, BARRAT J.A. et al. (1999) The Tatahouine diogenite: Mineralogical and chemical effects of sixty-three years of terrestrial residence (MAPS 34-1, 1999, 091-097, excerpts):
"The crystals of orthopyroxene ... contain many inclusions ... of silica, troilite, chromite, and *metal*. The silica inclusions ... contain silica with either metal (Fe, 98%; Ni + Co, 2%) or chromite." and: "The samples collected in 1994 contain secondary minerals, which clearly developed in the soil during their 63 years of terrestrial residence. First, *Fe stains* replace metal or troilite inclusions on the surfaces of the clasts in contact with soil or inside fractures. Second, yellowish to *light orange calcitic aggregates* were found in some samples. They mainly occur as a partial filling with a rosette texture or completely fill some fractures (ca. 100 µm wide)." Best wishes, Bernd ______________________________________________ http://www.meteoritecentral.com Meteorite-list mailing list [email protected] http://six.pairlist.net/mailman/listinfo/meteorite-list
