Hey Jeff, I have a little info compiled that compliments what has been said so far (re: Allende):
In contrast to the generally held belief that the formation of dark inclusions involved aqueous alteration/dehydration processes, it has been demonstrated through a study based on the preferential solubility of 7Li over 6Li that Li isotopic fractionation did not occur within the dark inclusions to a greater extent than in the whole rock. Therefore, a history of aqueous processing and dehydration for Allende dark inclusions is not evident (Sephton et al, 2006). It has also been demonstrated through fabric analysis that DIs, CAIs, and matrix components were all accreted together prior to the common impact/gravitation compressional forces that produced the observed preferred orientation (Watt et al., 2006). David ______________________________________________ Meteorite-list mailing list [email protected] http://six.pairlist.net/mailman/listinfo/meteorite-list
