Cadmium Elements, Alloys and Symbols

• Greenockite,CdS.

Greenockite is the only cadmium minerals of importance and this is very rare in occurrence. The cadmium of commerce is obtained from zinc ores that carry a small amount of the metal. Practically the entire output of cadmium in the United States comes from the zinc ores of the Joplin district, Missouri, which frequently contain some 0.3 per cent of the metal. Zinc ores of Silecia have for a long time been a prominent source of cadmium.

Cadmium is used in various alloys, such as low-fusing allows, dental amalgam, metal for stereotype plates, etc. The metal is used with silver in electroplating. The sulfide, CdS, is known as cadmium find uses in the arts.

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