VANADINITE  , a See also:

• MINERAL

mineral consisting of See also:

• LEAD
• LEAD (pronounced iced)

lead chloro-vanadate, (PbCl)Pb4(VO4)3, crystallizing in the hexagonal See also:

• SYSTEM

system and isomorphous with See also:

• PYROMORPHITE

pyromorphite and See also:

• MIMETITE

mimetite (q.v.) . The crystals are usually six-sided prisms terminated by the basal planes, but are sometimes modified by numerous pyramidal planes which exhibit parallel hemihedrism . Rounded crystals and See also:

• GROUPS
• GROUPS, THEORY

groups also occur . The See also:

• COLOUR (Lat. color, connected with celare, to hide, the root meaning, therefore, being that of a covering)

colour is usually See also:

• LIGHT

light 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 yellow, but crystals from See also:

• ARIZONA (from the Spanish-Indian Arizonac, of unknown meaning,—possibly " few springs,"-the name of an 18th-century mining camp in the Santa Cruz valley, just S. of the present border of Arizona)

Arizona are See also:

• BRIGHT, JOHN (1811-188g)
• BRIGHT, SIR CHARLES TILSTON

bright red . Owing to isomorphous replacement of the See also:

• VANADIUM

vanadium by See also:

• PHOSPHORUS (Gr. 4ws, light, sPEpety, to bear)

phosphorus and See also:

• ARSENIC (symbol As, atomic weight 75.0)

arsenic, the specific gravity varies from 6.6 to 7•2; a variety containing much arsenic is called endlichite . The hardness is 3 . The mineral is one of secondary formation in See also:

• VEINS

veins of lead ore . It was first found in See also:

• MEXICO
• MEXICO (Span. Mejico, or Mexico,)
• MEXICO, FEDERAL DISTRICT OF
• MEXICO, GULF OF

Mexico, and in 1801 was asserted to contain a new See also:

• ELEMENT (Lat. elementum)

element, which was called " erythronium "; this was later proved to be identical with the subsequently discovered element vanadium . Other well-known localities are Wanlockhead in See also:

• DUMFRIESSHIRE

Dumfriesshire, Kappel (Eisen-Kappel), near See also:

• KLAGENFURT (Slovene, Celovec)

Klagenfurt in See also:

• CARINTHIA (Ger. Kdrnten)

Carinthia, Arizona and New Mexico . (L . J .