ZINCITE
Online Encyclopedia
Originally appearing in Volume
V28,
Page 985
of the 1911 Encyclopedia Britannica.
ZINCITE
, a mineral consisting of zinc oxide (ZnO), crystallizing in the hemimorphic-hemihedral class of the rhombohedral system
.
Distinct crystals are of rare occurrence; they have the form of a hexagonal pyramid terminated at one end only by a basal plane
.
There is a perfect cleavage parallel to the basal plane, and usually the mineral is found as platy foliated masses
.
The blood-red colour and the orange-yellow streak are characteristic features
.
The hardness is 4'i, and the specific gravity is 5.6
.
Some manganese is usually present replacing zinc
.
It is found in the zinc mines at Sterling See also: - HILL
- HILL (0. Eng. hyll; cf. Low Ger. hull, Mid. Dutch hul, allied to Lat. celsus, high, collis, hill, &c.)
- HILL, A
- HILL, AARON (1685-175o)
- HILL, AMBROSE POWELL
- HILL, DANIEL HARVEY (1821-1889)
- HILL, DAVID BENNETT (1843–1910)
- HILL, GEORGE BIRKBECK NORMAN (1835-1903)
- HILL, JAMES J
- HILL, JOHN (c. 1716-1775)
- HILL, MATTHEW DAVENPORT (1792-1872)
- HILL, OCTAVIA (1838– )
- HILL, ROWLAND (1744–1833)
- HILL, SIR ROWLAND (1795-1879)
and Franklin Furnace in Sussex county, New Jersey, where it is associated with franklinite and willemite in crystalline limestone, and is mined as an ore of zinc
.
Artificial crystals of a 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)
or yellowish colour are not infrequently formed by sublimation in zinc furnaces
.
End of Article: ZINCITE
|
[back]
ZINC
|
[next]
ZINDER
|
del.icio.us it!