Specimen Number46-4-018Alternate Number54-41-2CommentsHigh-grade ore, 50-54% Mn, cryptomelane + pyrolusite with minor garnet.In Teaching CollectionNoMineral(s)cryptomelanepyrolusitegarnetRock NameMn oreDistrictAmapa, BrazilMineSerra do NavioExternal LinkMindatDeposit TypeLateriteGeo-Coords[1] Donated ByUniversity of Wisconsin-Madison Department of Geoscience