| Antigorite - 8, 12Bismuthinite - 6Bravoite - 8Brucite - 8Calcite - 8Chalcopyrite - 6, 8Chrysotile - 12Dolomite - 8, 12Dyscrasite - 8'Electrum' - 8Ferrimolybdite - 6Fluorite - 8Galena - 6, 8Gold - 5, 6, 8, 2, 9, 1, 7Grunerite - 10'K Feldspar' - 6Marcasite - 6Millerite - 8Molybdenite - 6, 8 | Monazite-(Ce) - 3Muscovite - 8Powellite - 6, 8Pyrite - 6, 8Pyrrhotite - 6, 8Quartz - 5, 6, 8, 12, 9Rutile - 8Scheelite - 6, 8Schorl - 6, 8'Sericite' - 8Silver - 6, 8Sphalerite - 6, 8Spinel - 8Staurolite - 11Talc - 8, 12Tellurobismuthite - 6Tetrahedrite - 8'Tourmaline' - 6, 8Tremolite - 8 |