Hi Christian and List, > I heard about that Brachina and Eagles Nest may probably be > from the same fall. Does anybody know further informations or > is this just a false report.
No, it is not "a false report". Some scientists like A.W.R. Bevan say it is another stone of Brachina i n s p i t e o f mineralogical differences*, Nehru C.E. et al. say they can't be paired b e c a u s e o f these differences. * Brachina is fine-grained, Eagle's Nest is coarser grained (than Brachina). Brachina is composed of olivine, augite, plagioclase, and orthopyroxene. Eagle's Nest contains only olivine + ca. 7% augite. T.D. Swindle warns that analyses of the chemical composition of Eagles Nest are hampered by extensive terrestrial weathering. References: GOODRICH C.A. (1998) Brachinites: Residues from low degrees of melting of a heterogeneous parent body (Meteoritics 33-4, 1998, A060). SWINDLE T.D. et al. (1998) Noble gases, bulk chemistry, and petrography of olivine-rich achondrites Eagles Nest and Lewis Cliff 88763: Comparison to brachinites MAPS 33, 1998, 31-48). Best wishes, Bernd To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] ______________________________________________ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
