Specimen Number30-8-002Alternate NumberDBH86001 44.6CommentsAltered rhyolite, garnet + biotite + quartz.In Teaching CollectionNoMineral(s)garnetbiotitequartzRock Namealtered rhyoliteDistrictStollbergMineNorrgruvanExternal LinkMIndatDeposit TypeSVALSGeo-Coords[1] Donated ByFrom the research collection of Dr. Paul Spry