Gold Au with Quartz and Pyrite, Dead River region, Marquette Co., Michigan
Gold Au with Quartz and Pyrite, Dead River region, Marquette Co., Michigan
Gold Au with Quartz, Olinghouse Mine I,. Washoe Co., Nevada
Gold Au with Quartz, detail I, Olinghouse Mine,. Washoe Co., Nevada
Gold Au with Quartz II, Olinghouse Mine,. Washoe Co., Nevada
Gold Au with Quartz III, Olinghouse Mine,. Washoe Co., Nevada
Gold Au with Quartz, detail II, Olinghouse Mine,. Washoe Co., Nevada