Specimen Number35-6-019Alternate Number63-5-5CommentsStrongly oxidized and sericitized quartz monzonite, oxide zone.In Teaching CollectionNoMineral(s)sericitehematiteRock Namealtered quartz monzoniteDistrictButteMineBerkeley pitExternal LinkMindatDeposit TypePorphyry CopperGeo-Coords[1] Donated ByUniversity of Wisconsin-Madison Department of GeoscienceReference MaterialACL-125: Miller, R.N., ed., 1973, Guidebook for the Butte Field Meeting of Society of Economic Geologists, Butte, Montana, August 18-21, 1973.