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BARYTOCALCITE , a rare See also:mineral found only at See also:Alston See also:Moor in See also:Cumberland, where it occurs as diverging See also:groups of 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 transparent crystals lining cavities in the See also:Mountain See also:Limestone.
The crystals belong to the See also:monoclinic See also:system and are usually prismatic or blade-shaped in See also:habit. The hardness is 4, and the sp. gr. 3.65. There are perfect cleavages parallel to the See also:prism faces inclined at an See also:angle of 73° 6', and a less perfect cleavage
parallel to the basal See also:plane, the angle between which and the prism faces is 770 6'; the angles between these three cleavages thus approximate to the angles (740 55') between the three cleavages of See also:calcite, and there are other points of superficial resemblance between these two minerals. Chemically, barytocalcite is a See also:double See also:salt of See also:barium and See also:calcium See also:carbonates, BaCa(CO3)2, thus differing
from the orthorhombic See also:bromlite (q.v.) which is an isomorphous mixture of the two carbonates. (L. J.
End of Article: BARYTOCALCITE
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