Specimen Number45-8-003Alternate Number49-80-8CommentsMassive fine-grained Mn oxide with abundant blue to white, botryoidal chalcedony that exhibits strong green fluorescence in SW UV.In Teaching CollectionNoMineral(s)mn-oxidechalcedonyRock NameMn oreDistrictSodavilleMineBlack JackExternal LinkMindatDeposit TypeEpithermalGeo-Coords[1] Donated ByUniversity of Wisconsin-Madison Department of Geoscience