Sherrer Quarry, C.K. Williams Quarry complex, Chestnut Hill, Easton, Northampton County, Pennsylvania, USA | β Amphibole Supergroup, β Anthophyllite, β Augite, β Autunite, β Azurite, β Baryte, β Biotite, β Brucite, β Calcite, β Celestine, β Chalcocite, β Chalcopyrite, β Chlorite Group, β Chrysocolla, β Cuprite, β Diopside, β Dolomite, β Ferro-actinolite-Tremolite Series, β Fluorapatite, β Fluorite, β Galena, β Graphite, β Gypsum, β Hematite, β Hydromagnesite, β Ilmenite, β Jade, β Limonite, β Magnesite, β Malachite, β Marcasite, β Molybdenite, β Muscovite, β Nephrite, β Paragonite, β Phlogopite, β Pyrite, β Pyrolusite, β Quartz, β Scapolite, β Serpentine Subgroup, β Sphalerite, β Talc, β Thorogummite, β Titanite, β Topaz, β Tourmaline, β Tremolite, β Uralite, β Uranophane, β Vesuvianite, β Wernerite, β Wulfenite, β Zaratite |