Piedras Verdes Mine, Piedras Verdes, Γlamos Municipality, Sonora, Mexico | β Actinolite, β Alunite, β Anhydrite, β Arsenopyrite, β Azurite, β Biotite, β Bornite, β Brochantite, β Calcite, β Chalcocite, β Chalcopyrite, β Chlorite Group, β Chrysocolla, β Clinochlore, β Covellite, β Cuprite, β Diopside, β Dolomite, β Epidote, β Goethite, β Graphite, β Gypsum, β Hematite, β Humite, β Ilmenite, β Jarosite, β Kaolinite, β Libethenite, β Limonite, β Magnetite, β Malachite, β Marcasite, β Molybdenite, β Montmorillonite, β Native Copper, β Neotocite, β Pennine, β Pyrite, β Pyrrhotite, β Quartz, β Rutile, β Sericite, β Serpentine Subgroup, β Specularite, β Sphalerite, β Tenorite, β Titanite, β Tourmaline, β Tremolite |