Marin County, California, USA | β Actinolite, β Adularia, β Agate, β Albite, β Almandine, β Ankerite, β Antigorite, β Apatite, β Apophyllite Group, β Aragonite, β Arsenopyrite, β Axinite Group, β Azurite, β Baryte, β Biotite, β Bitumen, β Calcite, β Carnelian, β Chalcedony, β Chlorite Group, β Chromite, β Chrysotile, β Cinnabar, β Citrine, β Clinochlore, β Clinozoisite, β Coal, β Collophane, β Crocidolite, β Cuprite, β Datolite, β Diallage, β Diopside, β Dolomite, β Epidote, β Epsomite, β Erythrite, β Fayalite-Forsterite Series, β Ferro-actinolite-Tremolite Series, β Galena, β Glauconite, β Gold, β Gypsum, β Hematite, β Heulandite Subgroup, Hornblende, β Hydromagnesite, β Jade, β Jarosite, β Jasper, β K Feldspar, β Kaolinite, β Laumontite, β Limonite, β Lizardite, β Magnesite, β Magnetite, β Malachite, β Manganese-bearing Calcite, β Manganite, β Mercury, β Microcline, β Millerite, β Muscovite, β Nephrite, β Opal, β Opal-AN, β Orthoclase, β Prase, β Prehnite, β Psilomelane, β Pumpellyite Subgroup, β Pyrite, β Pyrolusite, β Pyrophyllite, β Pyroxene Group, β Pyrrhotite, β Quartz, β Riebeckite, β Riebeckite Root Name Group, β Rock Crystal, β Rutile, β Sard, β Scheelite, β Selenite, β Serpentine Subgroup, β Siderite, β Silver, β Smaragdite, β Smoky Quartz, β Stilpnomelane, β SzaibΓ©lyite, β Talc, β Titanite, β Tourmaline, β Tremolite, β Wollastonite, β Zircon, β Zoisite |