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Saturday, February 19, 2005

Vanadinite

Vanadium mineral in the pyromorphite series of the apatite group of phosphates, lead chloride vanadate, Pb5(VO4)3Cl. It is a source of vanadium and a minor source of lead. The mineral's typical occurrences are as orange, red, or brown hairlike or barrel-shaped crystals in the oxidized zone of lead deposits as in the Urals, Russia; Transvaal, S.Af.; Chihuahua, Mex.; and Arizona, U.S.

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