TREMOLITE  , a member of the See also:

• AMPHIBOLE

amphibole See also:

• GROUP

group of See also:

• ROCK
• ROCK (O.Fr. rake, Sp. rota, Ital. rocca; possibly from a Lat. form rupica, from rupes, rock)
• ROCK, DANIEL (1799–187t)

rock-forming minerals (see AMPHIBOLE) . It is a See also:

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

calcium and See also:

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

magnesium metasilicate, CaMg3(SiO3)4, crystallizing in the See also:

• MONOCLINIC

monoclinic See also:

• SYSTEM

system with an See also:

• ANGLE (from the Lat. angulus, a corner, a diminutive, of which the primitive form, angus, does not occur in Latin; cognate are the Lat. angere, to compress into a bend or to strangle, and the Gr. ayKOS, a bend; both connected with the Aryan root ank-, to

angle of 55° 49' between the perfect prismatic cleavages . It occurs sometimes as distinct crystals, but more usually as See also:

• LONG, GEORGE (1800-1879)
• LONG, JOHN DAVIS (1838– )

long bladed and fibrous forms . The See also:

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

colour is 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 or 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, but when See also:

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

iron is See also:

• PRESENT

present it is See also:

• GREEN, A
• GREEN, ALEXANDER HENRY (1832—1896)
• GREEN, DUFF (1791—1875)
• GREEN, JOHN RICHARD (1837—1883)
• GREEN, MATTHEW (1696-1737)
• GREEN, THOMAS HILL (1836-1882)
• GREEN, VALENTINE (1739–1813)
• GREEN, WILLIAM HENRY (.1825–1900)

green, then forming a passage to actinolite . The hardness is 5 a and the specific gravity 3.0 . Tremolite is a characteristic See also:

• MINERAL

mineral of crystalline limestones, especially dolomitic limestones, but also occurs as an alteration-product of See also:

• OLIVINE

olivine in basic igneous rocks . Typical specimens have long been known from the white crystalline See also:

• DOLOMITE

dolomite of Campolongo in the St Gotthard region, See also:

• SWITZERLAND

Switzerland, near to which is the Tremola Valley, after which the mineral was named in 1796 . See also:

• FINE

Fine crystals are found in crystalline See also:

• LIMESTONE

limestone at Gouverneur, See also:

• PIERREPONT, WILLIAM (c. 1607-1678)

Pierrepont and other places in New See also:

• YORK
• YORK (HOUSE OF)
• YORK, EDMUND OF LANGLEY, DUKE OF (1341-1402)
• YORK, EDWARD
• YORK, FREDERICK AUGUSTUS, DUKE OF (1763-1827)
• YORK, RICHARD, DUKE

York, and at several localities in See also:

• SWEDEN
• SWEDEN [Sverige]
• SWEDEN, NORWAY AND

Sweden . (L . J .