DIASPORE  , a native See also:

• ALUMINIUM (symbol Al; atomic weight 27.0)

aluminium hydroxide, AlO(OH), crystallizing in the orthorhombic See also:

• SYSTEM

system and isomorphous with See also:

• GOTHITE

gothite and See also:

• MANGANITE

manganite . It occurs sometimes as flattened crystals, but usually as lamellar or scaly masses, the flattened See also:

• SURFACE

surface being a direction of perfect cleavage on which the lustre is markedly pearly in See also:

• CHARACTER (Gr. xapareri7p, from xap&crew, to scratch)

character . It is colourless or greyish-See also:

• WHITE
• WHITE, ANDREW DICKSON (1832– )
• WHITE, GILBERT (1720–1793)
• WHITE, HENRY KIRKE (1785-1806)
• WHITE, HUGH LAWSON (1773-1840)
• WHITE, JOSEPH BLANCO (1775-1841)
• WHITE, RICHARD GRANT (1822-1885)
• WHITE, ROBERT (1645-1704)
• WHITE, SIR GEORGE STUART (1835– )
• WHITE, SIR THOMAS (1492-1567)
• WHITE, SIR WILLIAM ARTHUR (1824--1891)
• WHITE, SIR WILLIAM HENRY (1845– )
• WHITE, THOMAS (1628-1698)
• WHITE, THOMAS (c. 1550-1624)

white, yellowish, sometimes See also:

• VIOLET

violet in See also:

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

colour, and varies from translucent to transparent . It may be readily distinguished from other colour-less transparent minerals, with a perfect cleavage and pearly lustre—See also:

• MICA

mica, See also:

• TALC

talc, See also:

• BRUCITE

brucite, See also:

• GYPSUM

gypsum—by its greater hardness of 62-7 . The specific gravity is 3.4 . When heated before the See also:

• BLOWPIPE

blowpipe it decrepitates violently, breaking up into white pearly scales; it was because of this See also:

• PROPERTY

property that the See also:

• MINERAL

mineral was named diaspore by R . J . Hairy in 18or, from Stavreipew, " to scatter." The mineral occurs as an alteration product of See also:

• CORUNDUM

corundum or See also:

• EMERY (Ger. Smirgel)

emery, and is found in granular See also:

• LIMESTONE

limestone and other crystalline rocks . Well-See also:

• DEVELOPED

developed crystals are found in the emery deposits of the Urals and at See also:

• CHESTER
• CHESTER, EARLS OF

Chester, See also:

• MASSACHUSETTS (an Indian name, originally applied to a tribe of Indians)

Massachusetts, and in See also:

• KAOLIN

kaolin at Schemnitz in See also:

• HUNGARY
• HUNGARY (Hungarian Magyarorszdg)

Hungary . If obtainable in large quantity it would be of economic importance as a source of alumina . (L . J .