Zinnwaldite: alternatives and connections

An optical property of some crystals which exhibit a star-shaped by reflected light, as star sapphire, or by transmitted light, as som…

A variety of translucent quartz, spangled throughout with scales of yellow mica.

Mica containing iron and magnesia, generally of a black or dark green color; -- a common constituent of crystalline rocks. See Mica.

Mica.

A kind of Muscovite, or potash mica, containing water.

Of such a nature relatively to some other associated body or bodies, as to tend to the negative pole of a voltaic battery, in electrol…

One of the ultimate parts which are variously combined in anything; as, letters are the elements of written language; hence, also, a s…

Laminated, but restricted to the variety of laminated structure found in crystalline schist, as mica schist, etc.; schistose.

The property, possessed by some crystalline rocks, of dividing into plates or slabs, which is due to the cleavage structure of one of…

Mica. See Mica.

Glimmer; mica.

A crystalline rock, consisting, like granite, of quartz, feldspar, and mica, but having these materials, especially the mica, arranged…

Resembling gneiss; having some of the characteristics of gneiss; -- applied to rocks of an intermediate character between granite and…

A crystalline, granular rock, consisting of quartz, feldspar, and mica, and usually of a whitish, grayish, or flesh-red color. It diff…

A crystalline rock consisting of quarts and mica, common in the tin regions of Cornwall and Saxony.

A variety of potash mica containing water. It is less elastic than ordinary muscovite.

Characterized by small, detached points, chiefly composed of mica, less decomposable than the mass of the rock, and forming knots in r…

Capable of being split into laminae or thin plates, as mica; capable of being extended under pressure into a thin plate or strip.