Specimen Number29-8-008Alternate NumberKN-133CommentsDark Cripple Creek breccia with sparse, very fine-grained pyrite.In Teaching CollectionNoMineral(s)feldsparpyriteRock NamephonoliteDistrictCripple CreekMineCressonExternal LinkMindatDeposit TypeDiatremeGeo-Coords[1] Donated ByFrom the research collection of Dr. Paul Spry