Found 1 items, similar to Mica slate.
English → English
Definition: Mica slate
, n. [L. mica crumb, grain, particle; cf. F. mica.]
The name of a group of minerals characterized by highly
perfect cleavage, so that they readily separate into very
thin leaves, more or less elastic. They differ widely in
composition, and vary in color from pale brown or yellow to
green or black. The transparent forms are used in lanterns,
the doors of stoves, etc., being popularly called
. Formerly called also cat-silver
Note: The important species of the mica group are:
, common or potash mica, pale brown or
green, often silvery, including damourite
and muscovy glass
iron-magnesia mica, dark brown, green, or black;
, iron, mica, black; phlogopite
magnesia mica, colorless, yellow, brown; lepidolite
lithia mica, rose-red, lilac.
[1913 Webster] Mica (usually muscovite, also biotite)
is an essential constituent of granite, gneiss, and
mica slate; biotite
is common in many eruptive rocks;
in crystalline limestone and serpentine.
(Min.), an eruptive rock allied to diorite but
containing mica (biotite) instead of hornblende.
, a kind of dynamite containing fine scales of
, Mica slate
(Geol.), a schistose rock,
consisting of mica and quartz with, usually, some