CROCIDOLITE  , a See also:

• MINERAL

mineral described in 1815 by M . H . See also:

• KLAPROTH, HEINRICH JULIUS (1783-1835)
• KLAPROTH, MARTIN HEINRICH (1743-1817)

Klaproth under the name Blaueisenstein (See also:

• BLUE (common in different forms to most European languages)

blue ironstone), and in 1831 by J . F . See also:

• HAUSMANN, JOHANN FRIEDRICH LUDWIG (1782-1859)

Hausmann, who gave it its See also:

• PRESENT

present name on See also:

• ACCOUNT
• ACCOUNT (through O. Fr. acont, Late Lat. comptum, cornputare, to calculate)

account of its See also:

• NAP

nap-like See also:

• APPEARANCE (from Lat. apparere, to appear)

appearance (Gr . KpoKUS, nap of See also:

• CLOTH

cloth) . It is a blue fibrous mineral belonging to the See also:

• AMPHIBOLE

amphibole See also:

• GROUP

group and closely related to riebeckite; chemically it is an See also:

• IRON [symbol Fe, atomic weight 55.85 (0=16)]

iron See also:

• SODIUM [symbol Na, from Lat. natrium; atomic weight 23.00 (0=16)]

sodium silicate . Its resemblance to See also:

• ASBESTOS

asbestos has gained for it the name Cape Asbestos, the See also:

• CHIEF (from Fr. chef, head, Lat. caput)

chief occurrence being in Cape See also:

• COLONY (Lat. colonia, from colonus, a cultivator)

Colony . The mineral suffers alteration by removal of See also:

• ALKALI

alkali and peroxidation of the ferrous iron, and further by deposition of See also:

• SILICA

silica between the See also:

• FIBRES
• FIBRES (or FIBERS, in American spelling; from Lat. fibra, apparently connected either with filum, thread, or findere, to split)

fibres, or by their replacement by silica; a hard siliceous mineral is thus formed which when polished shows, in See also:

• CON

con-sequence of its fibrous structure, a beautiful chatoyance or silky lustre . This is the ornamental See also:

• STONE
• STONE (0. Eng. shin; the word is common to Teutonic languages, cf. Ger. Stein, Du. steen, Dan. and Swed. sten; the root is also seen in Gr. aria, pebble)
• STONE, CHARLES POMEROY (1824-1887)
• STONE, EDWARD JAMES (1831-1897)
• STONE, FRANK (1800-1859)
• STONE, GEORGE (1708—1764)
• STONE, LUCY [BLACKWELL] (1818-1893)
• STONE, MARCUS (184o— )
• STONE, NICHOLAS (1586-1647)

stone which is known when blue as " See also:

• HAWK (O. Eng. hafoc or heafoc, a common Teutonic word, cf. Dutch havik, Ger. Habicht; the root is hab-, haf-, to hold, cf. Lat. accipiter, from capere)

hawk's-See also:

• EYE
• EYE (O. Eng. edge, Ger. Auge; derived from an Indo-European root also seen in Lat. oc-ulus, the organ of vision (q.v.)

eye," and when of See also:

• RICH, BARNABE (c. 1540-1617)
• RICH, CLAUDIUS JAMES (1787-1821)
• RICH, JOHN (1692-1761)
• RICH, PENELOPE, LADY (c. 1562–1607)
• RICH, RICHARD, 1ST BARON RICH (1490?-1567)

rich See also:

• GOLDEN

golden 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 See also:

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

colour as " See also:

• TIGER
• TIGER (Felis tigris)

tiger-eye." The latter, which represents the final alteration of the crocidolite, has become very fashionable as " See also:

• SOUTH
• SOUTH, ROBERT (1634–1716)

South See also:

• AFRICAN

African See also:

• CAT
• CAT, CIVET
• CAT, HOUSE

cat's eye," and is often termed " crocidolite," though practically only a mixture of See also:

• QUARTZ

quartz with brown See also:

• OXIDE

oxide of iron . The following are analyses by A . See also:

• RENARD, ALPHONSE FRANCOIS (1842-1903)

Renard and C .

Klement of the unaltered crocidolite and of the blue and brown products of alteration: Crocidolite . Hawk's-eye . Tiger-eye . Silica ~— 51'89 93 45 93 05 Ferric oxide 19.22 2.41 4.94 Alumina . . . . .. 0.23 0.66 Ferrous oxide . 17.53 1.43 See also:

• MAGNESIA

Magnesia . 2.43 0.22 0.26 See also:

• LIME
• LIME (O. Eng. lim, Lat. limes, mud, from linere, to smear)

Lime 0.40 0.13 0.44 Soda 7.71 Potash 0.15 See also:

• WATER

Water 2.36 0.82 0.76 See also:

• TOTAL

Total . . Io1.69 98.69 See also:

• IOO

Ioo•11 Another alteration product of the crocidolite, consisting of silica and ferric See also:

• HYDRATE

hydrate, has been called griqualandite . Crocidolite and the minerals resulting from its alteration occur in seams, associated with See also:

• MAGNETITE

magnetite and other iron-ores, in the See also:

• JASPER

jasper-slates of the Asbestos Mountains in Griqualand See also:

• WEST
• WEST, BENJAMIN (1738-1820)
• WEST, NICHOLAS (1461-1533)

West, Cape Colony . It is known also from a few other localities, but only in subordinate quantity .