Specimen Number29-8-006Alternate NumberKH-109CommentsAltered Proterozoic granite with abundant disseminated fine-grained pyrite.In Teaching CollectionNoMineral(s)clayquartzpyriteRock Namemineralized graniteDistrictCripple CreekMineCressonExternal LinkMindatDeposit TypeDiatremeGeo-Coords[1] Donated ByFrom the research collection of Dr. Paul Spry