French Creek Mines, Saint Peters, Warwick Township, Chester County, Pennsylvania, USA | ⓘ Actinolite, ⓘ Amphibole Supergroup, ⓘ Andradite, ⓘ Ankerite, ⓘ Anthophyllite, ⓘ Apatite, ⓘ Apophyllite Group, ⓘ Aragonite, ⓘ Augite, ⓘ Azurite, ⓘ Biotite, ⓘ Bornite, ⓘ Byssolite, ⓘ Calcite, ⓘ Chalcopyrite, ⓘ Chlorite Group, ⓘ Chrysocolla, ⓘ Cobaltite, ⓘ Copper, ⓘ Covellite, ⓘ Datolite, ⓘ Epidote, ⓘ Erythrite, ⓘ Fluorite, ⓘ Forsterite, ⓘ Graphite, ⓘ Grossular, ⓘ Gypsum, ⓘ Hematite, ⓘ Heulandite Subgroup, Hornblende, ⓘ Ilmenite, ⓘ Jarosite, ⓘ Laumontite, ⓘ Limonite, ⓘ Magnetite, ⓘ Malachite, ⓘ Mesolite, ⓘ Microcline, ⓘ Molybdenite, ⓘ Natrolite, ⓘ Orthoclase, ⓘ Pigeonite, ⓘ Pyrite, ⓘ Pyrrhotite, ⓘ Quartz, ⓘ Rhodochrosite, ⓘ Riebeckite, ⓘ Scapolite, ⓘ Schorl, ⓘ Siderite, ⓘ Sphalerite, ⓘ Stibnite, ⓘ Stilpnomelane, ⓘ Talc, ⓘ Thomsonite Subgroup, ⓘ Titanite, ⓘ Tremolite, ⓘ Zircon, ⓘ Zoisite |