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Wulfenite specimens often found in lead mines C. D. Woodhouse Collection, Geology Azurite a copper mineral C. D. Woodhouse Collection, Geology Azurite and Malachite the azurite (blue) surrounds the malachite (green) C. D. Woodhouse Collection, Geology Galena lead sulphite C. D. Woodhouse Collection, Geology Quartz one of the most common and versatile crystals C. D. Woodhouse Collection, Geology

Gold in a matrix of Quartz C. D. Woodhouse Collection, Geology Pyrite and hematite found on the Isle of Elba, Italy C. D. Woodhouse Collection, Geology Proustite found in Freiberg, Germany C. D. Woodhouse Collection, Geology Stibnite on quartz found in Felsobanya, Romania C. D. Woodhouse Collection, Geology Assay kit, 1890 German Geology