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TREMOLITE

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Originally appearing in Volume V27, Page 244 of the 1911 Encyclopedia Britannica.

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TREMOLITE , a member of the See also:

AMPHIBOLE

amphibole See also:

GROUP

group of See also:

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 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 or See also:

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, 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, and at several localities in See also:

Sweden. (L. J.

End of Article: TREMOLITE

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