Specimen Number48-2-025Alternate Number77-142CommentsQuartz monzonite-granodiorite contact; quartz + k-spar + plagioclase + amphibole + biotite + pyrrhotite + pyrite.In Teaching CollectionNoMineral(s)quartzk-sparplagioclaseamphibolebiotitepyrrhotitepyriteField NotesSample from PhD (U Michigan) of Dr. Phil Brown, longtime Professor of Geology at University of Wisconsin-Madison. Copy of field notes shown in photo below.Rock NamegranodioriteDistrictTungsten HillsMinePine CreekExternal LinkMindatGeo-LocationBrownstoneDeposit TypeSkarnGeo-Coords[1] Donated ByUniversity of Wisconsin-Madison Department of Geoscience