Specimen Number46-5-028Alternate Number57-15 Mn 220CommentsManganite altering to pyrolusite, with psilomelane crust.In Teaching CollectionNoMineral(s)manganitepyrolusitepsilomelaneRock NameMn oreDistrictCuyuna RangesMineMarocoExternal LinkMindatDeposit TypeBIFGeo-Coords[1] Donated ByUniversity of Wisconsin-Madison Department of Geoscience