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vanadinite

[vuh-nad-n-ahyt, -neyd-] /vəˈnæd nˌaɪt, -ˈneɪd-/
noun
1.
a mineral, Pb 5 (VO 4) 3 Cl, occurring in yellow, brown, or greenish crystals: an ore of lead and vanadium.
Origin
1850-1855
1850-55; vanad(ium) + -in2 + -ite1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for vanadinite
  • vanadinite occurs in vugs as granular aggregates of radiating prismatic crystals.
British Dictionary definitions for vanadinite

vanadinite

/vəˈnædɪˌnaɪt/
noun
1.
a red, yellow, or brownish mineral consisting of a chloride and vanadate of lead in hexagonal crystalline form. It results from weathering of lead ores in desert regions and is a source of vanadium. Formula: Pb5(VO4)3Cl
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Encyclopedia Article for 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. Endlichite is a highly arsenious variety; the complete substitution of arsenic for vanadium in the crystal structure forms the mineral mimetite. For detailed physical properties, see vanadate mineral (table)

Learn more about vanadinite with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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