Specimen Number48-2-021Alternate Number77-138CommentsGray marble.In Teaching CollectionNoMineral(s)calciteField 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 NamemarbleDistrictTungsten HillsMinePine CreekExternal LinkMindatGeo-LocationBrownstoneDeposit TypeSkarnGeo-Coords[1] Donated ByUniversity of Wisconsin-Madison Department of Geoscience