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DESCLOIZITE , a rare See also:mineral See also:species consisting of basic See also:lead and See also:zinc vanadate, (Pb, Zn)2(OH)VO4, crystallizing in the orthorhombic See also:system and isomorphous with See also:olivenite. It was discovered by A: Damour in 1854, and named by him in See also:honour of the See also:French mineralogist See also:Des Cloizeaux. It occurs as small prismatic or pyramidal crystals, usually forming drusy crusts and stalactitic aggregates; also as fibrous encrusting masses with a mammillary See also:surface. The See also:colour is deep See also:cherry-red to See also:- BROWN
- BROWN, CHARLES BROCKDEN (1771-181o)
- BROWN, FORD MADOX (1821-1893)
- BROWN, FRANCIS (1849- )
- BROWN, GEORGE (1818-188o)
- BROWN, HENRY KIRKE (1814-1886)
- BROWN, JACOB (1775–1828)
- BROWN, JOHN (1715–1766)
- BROWN, JOHN (1722-1787)
- BROWN, JOHN (1735–1788)
- BROWN, JOHN (1784–1858)
- BROWN, JOHN (1800-1859)
- BROWN, JOHN (1810—1882)
- BROWN, JOHN GEORGE (1831— )
- BROWN, ROBERT (1773-1858)
- BROWN, SAMUEL MORISON (1817—1856)
- BROWN, SIR GEORGE (1790-1865)
- BROWN, SIR JOHN (1816-1896)
- BROWN, SIR WILLIAM, BART
- BROWN, THOMAS (1663-1704)
- BROWN, THOMAS (1778-1820)
- BROWN, THOMAS EDWARD (1830-1897)
- BROWN, WILLIAM LAURENCE (1755–1830)
brown or See also:black, and the crystals are transparent or translucent with a greasy lustre; the streak is See also:orange-yellow to brown; specific gravity 5.9 to 6.2; hardness 31. A variety known as cuprodescloizite is dull See also:green in colour; it contains a considerable amount of See also:copper replacing zinc and some See also:arsenic replacing See also:Vanadium. Descloizite occurs in See also:veins of lead ores in association with See also:pyromorphite, See also:vanadinite, See also:wulfenite, &c. Localities arethe Sierra de See also:Cordoba in See also:Argentina, See also:Lake Valley in Sierra See also:county, New See also:Mexico, See also:Arizona, See also:Phoenixville in See also:Pennsylvania, and Kappel (Eisen-Kappel) near See also:Klagenfurt in See also:Carinthia.
Other names which have been applied to this species are vanadite, tritochorite and ramirite; the uncertain vanadates eusynchite, araeoxene and dechenite are possibly identical with it.
End of Article: DESCLOIZITE
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