Specimen Number47-8-006Alternate Number77-54CommentsMedium-grained equigranular quartz diorite, quartz + plagioclase + amphibole + biotite + pyrrhotite.In Teaching CollectionNoMineral(s)quartzplagioclaseamphibolebiotitepyrrhotiteField NotesSample from PhD (U Michigan) of Dr. Phil Brown, longtime Professor of Geology at University of Wisconsin-Madison. Image below shows field notes associated with this sample.Rock Namequartz dioriteDistrictTungsten HillsMinePine CreekExternal LinkMindatGeo-Location382, 2nd driftDeposit TypeSkarnGeo-Coords[1] Donated ByUniversity of Wisconsin-Madison Department of Geoscience