Jeff Grossman wrote:: > "The main part of the native iron in the rocks of the Hammers Dal Complex > is roughly divided into two major types: iron which forms cumulates in the > marginal dolerite [diabase] and iron spherules in the intermediate rock > characterized by columnar jointing.
Hello All! For those who are not so overly geologically-minded, I'd like to explain why Jeff or the author enclosed "diabase" between square brackets: The term dolerite is mainly used in Great Britain whereas the term diabase is chiefly American English. A dolerite is a dyke rock formed from a basaltic magma. Reference: MacKENZIE W.S. and ADAMS A.E. (1995, 1996, 2000) A Color Atlas of Rocks and Minerals in Thin Section (John Wiley & Sons, New York- Toronto, 192 pp.). Best wishes, Bernd ______________________________________________ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
