. Bulletin - New York State Museum. Science. t>2 NEW YORK STATE MUSEUM Pyrargyrite is found in several German localities, in Mexico and Chile; also in Idaho, Nevada, Colorado and other silver bearing regions of the western states. It is mined for silver. Proustite (light ruby silver ore) Ag3AsS3 Proustite is a sulfarsenite of silver and contains $ sulfur, $ arsenic and $ silver. Proustite closely resembles pyrargyrite in crystallization as well as in translucency. Its luster is adamantine rather than metallic and it differs from pyrargyrite in the color, which shades more toward


. Bulletin - New York State Museum. Science. t>2 NEW YORK STATE MUSEUM Pyrargyrite is found in several German localities, in Mexico and Chile; also in Idaho, Nevada, Colorado and other silver bearing regions of the western states. It is mined for silver. Proustite (light ruby silver ore) Ag3AsS3 Proustite is a sulfarsenite of silver and contains $ sulfur, $ arsenic and $ silver. Proustite closely resembles pyrargyrite in crystallization as well as in translucency. Its luster is adamantine rather than metallic and it differs from pyrargyrite in the color, which shades more toward scarlet. The streak is scarlet. Proustite is found associated with pyrargyrite, the localities being essentially the same as for that species. It is a source of silver. Tetrahedrite (gray copper ore) CusSb2S7 Tetrahedrite is a sulfantimonite of copper and contains $ sulfur, $ antimony and $ copper. Some of the antimony is usually replaced by arsenic, which causes it to merge gradually into tennantite, the sulfarsenite of silver. Tetrahedrite crystallizes in the tetrahedral group of the isometric system. The crystals, two of the commonest types. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original New York State Museum; New York State Museum. Albany : New York State Education Dept


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Keywords: ., bookcentury1800, bookdecade1880, booksubjectscience, bookyear1887