Specimen Number41-7-004Alternate NumberGV-6CommentsQuartz vein with inclusions of felsic porphyritic unit that was previously heavily pyritized.In Teaching CollectionNoMineral(s)quartzfeldsparpyriteRock Namequartz vein with sulfidesDistrictGrass ValleyMineIdaho-MarylandExternal LinkMindatDeposit TypeVeinGeo-Coords[1] Donated ByUniversity of Wisconsin-Madison Department of Geoscience