[EMAIL PROTECTED] wrote: > I noted that McSween has included the Brachinites > with the primitive Achondrites in his second edition > of "Meteorites and their parent planets", whilst > Norton's Encyclopedia exludes the Brachinites from > the chapter on primitve achondrites, but rather > lists them with asteroidal (differentiate) achondrites. > > So, should we consider the Brachinites as > primitive meteorites, or not...? Any ideas?
Hello Herbert and List, O.R. Norton does not really "e x c l u d e" them because he says (and also explains the different terms) on page 165: "Three a d d i t i o n a l small achondrite groups are currently recognized and should be briefly mentioned to complete our inventory of the achondrites. They (= acapulcoites, lodranites, and winonaites) are called primitive achondrites, and as a group are distinguished from the differentiated achondrites by having been only partially melted and therefore not completely diffeentiated." Reference: NORTON O.R. (2002) The Cambridge Encyclopedia of Meteorites. Best wishes, Bernd ______________________________________________ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
