Gold Copper Bismuth Crystals Silicon Galena Stibnite Pyrite Halite Fluorite Magnetite Hematite Ruby Rhodochrosite Azurite Malachite Calcite Ulexite barite Celestite Selenite Biotite Garnet The Mica Group Muscovite Olivine Sodalite Tanzanite Topaz Talc Chrysocolla