CHALYBITE  , a See also:

• MINERAL

mineral See also:

• SPECIES

species consisting of See also:

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

iron carbonate (FeCO3) and forming an important ore of iron . It was See also:

• EARLY
• EARLY, JUBAL ANDERSON (1816-1894)

early known as spathose iron, spathic iron or See also:

• STEEL, FLORA ANNIE (1847– )

steel ore . F . S . See also:

• BEUDANT, FRANCOIS SULPICE (1787—1850)

Beudant in 1832 gave the name siderose (from viSrlpos, iron), which was modified by W . See also:

• HAIDINGER, WILHELM KARL, RITTER VON (1795-1871)

Haidinger in 1845 to siderite . Chalybite (from xh))ui//, XaXv(3os, See also:

• LAT

Lat. chalybs, steel) is of slightly later date, having been given by E . F . Glocker in 1847 . The name siderite is in See also:

• COMMON

common use, but it is open to objection since it had earlier been applied to several other species, and is also now used as a See also:

• GROUP

group name for meteoric irons . Chalybite crystallizes in the See also:

• RHOMBOHEDRAL

rhombohedral See also:

• SYSTEM

system and is isomorphous with See also:

• CALCITE

calcite; like this it possesses perfect cleavages parallel to the faces of the See also:

• PRIMITIVE

primitive rhombohedron, the angles between which are 730 0' . Crystals are usually rhombohedral in See also:

• HABIT (through the French from Lat. habitus, from habere, to have, hold, or, in a reflective sense, to be in a certain condition; in many of the English senses the French use habitude, not habit)

habit, and the primitive rhombohedron r {loos is a common See also:

• FORM (Lat. forma)

form, the faces being often curved as represented in the figure .

Acute rhombohedra in See also:

• COMBINATION (Lat. combinare, to combine)

combination with the basal pinacoid are also frequent, giving crystals of octahedral aspect . The mineral often occurs in cleavable masses with a coarse or See also:

• FINE

fine granular texture; also in botryoidal or globular (sphaerosiderite) and oolitic forms . When compact and mixed with much See also:

• CLAY (from O. Eng. claeg, a word common in various forms to Teutonic languages, cf. Ger. Klei)
• CLAY, CASSIUS MARCELLUS (1810-1903)
• CLAY, CHARLES (1801–1893)
• CLAY, FREDERIC (1838–1889)
• CLAY, HENRY (1777–1852)

clay and See also:

• SAND
• SAND, GEORGE (1804-1876)

sand it constitutes the well-known clay ironstone . Chalybite is usually yellowish-See also:

• GREY, CHARLES GREY, 2ND EARL (1764-1845)
• GREY, HENRY GREY, 3RD EARL (1802-1894)
• GREY, LADY JANE (1537-1554)
• GREY, SIR EDWARD
• GREY, SIR GEORGE (1812–1898)

grey or 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 in See also:

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

colour; it is translucent and has a vitreous lustre . Hardness 31; sp. gr . 3.8 . The See also:

• DOUBLE
• DOUBLE (from the Mid. Eng. duble, the form which gives the present pronunciation, through the Old Er. duble, from Lat. duplus, twice as much)

double See also:

• REFRACTION
• REFRACTION (Lat. refringere, to break open or apart)

refraction ((a —E=o•241) is stronger than that of calcite . When pure it contains 48.2 % of iron, but this is often partly replaced isomorphously by See also:

• MAN
• MAN, ISLE OF (anc. Mona)

man- ganese, See also:

• MAGNESIUM [symbol Mg, atomic weight 24.32 (0 = 16)]

magnesium or See also:

• CALCIUM [symbol Ca, atomic weight 40.0 (o= x6)]

calcium: the varieties known as oligon-spar or oligonite, sideroplesite and sidero- dote contain these elements respec- tively in large amount . These varieties form a passage to See also:

• ANKERITE

ankerite Crystal of Chalybite . (9.v.) and mesitite, and all are referred to loosely as brown-spar . Chalybite is a common See also:

• GANGUE, or CANG

gangue mineral in metalliferous See also:

• VEINS

veins, and well-crystallized specimens are found with ores of See also:

• COPPER (symbol Cu, atomic weight 63.1, H=1, or 63.6, O = 16)

copper, See also:

• LEAD
• LEAD (pronounced iced)

lead, See also:

• TIN (Lat.- stannum, whence the chemical symbol " Sn "; atomic weight =117.6, 0=16)

tin, &c., in See also:

• CORNWALL

Cornwall, the Harz, See also:

• SAXONY
• SAXONY (Ger. Provinz Sachsen)

Saxony and many other places . It also occurs alone as large masses in 'veins and beds in rocks of various kinds .

The clay ironstone so extensively worked as an ore of iron occurs as nodules and beds in the See also:

• COAL

Coal See also:

• MEASURES

Measures of See also:

• ENGLAND
• ENGLAND, THE CHURCH OF

England and the See also:

• UNITED

United States, and the oolitic iron ore of the See also:

• CLEVELAND
• CLEVELAND (or CLEIVELAND), JOHN (1613—1658)
• CLEVELAND, BARBARA VILLIERS, DUCHESS OF (1641-1709)
• CLEVELAND, STEPHEN GROVER (1837-1908)

Cleveland See also:

• DISTRICT

district in See also:

• YORKSHIRE

Yorkshire forms beds in the See also:

• LIAS

Lias . The mineral is occasionally found as concretionary masses (sphaerosiderite) in cavities in basic igneous rocks such as See also:

• DOLERITE (from Gr. SoXepos, deceptive)

dolerite . (L . J .