Specimen Number46-4-029CommentsLayered impure "psilomelane", need XRD to better evaluate mineralogy.In Teaching CollectionNoMineral(s)psilomelaneRock NameMn oreDistrictTarkwaMineNsutaExternal LinkMindatGeo-LocationHill A.Deposit TypeMetamorphosed ExhaliteGeo-Coords[1] Donated ByUniversity of Wisconsin-Madison Department of Geoscience