alabaster, aragonite, asbestos, azurite, barite, bauxite, boron, brimstone, brookite, calcite, carbon, chalcedony, chlorite, chromite, clay, coal, cobalt, coke, corundum, cryolite, crystal, diatomite, emery, feldspar, fluorite, fluorspar, fool's gold, garnet, graphite, gypsum, hornblende, iolite, kaolinite, lazurite, lignite, lime, magnesite, manganese, mica, mineral, molybdenite, obsidian, orthoclase, ozocerite, peat, pitchblende, pumice, pyrite, pyroxene, quartz, quicklime, rhodonite, salt, selenite, silica, silicate, spar, sulfur, talcum, vermiculite ... more