Definition of feldspar

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Feldspar (n.) Alt. of Feldspat.

Lern More About Feldspar

Stinkweed :: Stinkstone (n.) One of the varieties of calcite, barite, and feldspar, which emit a fetid odor on being struck; -- called also swinestone..
Porphyry :: Porphyry (n.) A term used somewhat loosely to designate a rock consisting of a fine-grained base (usually feldspathic) through which crystals, as of feldspar or quartz, are disseminated. There are red, purple, and green varieties, which are highly esteemed as marbles..
Element :: Element (n.) One of the ultimate parts which are variously combined in anything; as, letters are the elements of written language; hence, also, a simple portion of that which is complex, as a shaft, lever, wheel, or any simple part in a machine; one of the essential ingredients of any mixture; a constituent part; as, quartz, feldspar, and mica are the elements of granite..
Felsite :: Felsite (n.) A finegrained rock, flintlike in fracture, consisting essentially of orthoclase feldspar with occasional grains of quartz..
Granite :: Granite (n.) A crystalline, granular rock, consisting of quartz, feldspar, and mica, and usually of a whitish, grayish, or flesh-red color. It differs from gneiss in not having the mica in planes, and therefore in being destitute of a schistose structure..
Schist :: Schist (n.) Any crystalline rock having a foliated structure (see Foliation) and hence admitting of ready division into slabs or slates. The common kinds are mica schist, and hornblendic schist, consisting chiefly of quartz with mica or hornblende and often feldspar..
Miascite :: Miascite (n.) A granitoid rock containing feldspar, biotite, elaeolite, and sodalite..
Sanidine :: Sanidine (n.) A variety of orthoclase feldspar common in certain eruptive rocks, as trachyte; -- called also glassy feldspar..
Perthite :: Perthite (n.) A kind of feldspar consisting of a laminated intertexture of albite and orthoclase, usually of different colors..
Anorthite :: Anorthite (n.) A mineral of the feldspar family, commonly occurring in small glassy crystals, also a constituent of some igneous rocks. It is a lime feldspar. See Feldspar..
Andesite :: Andesite (n.) An eruptive rock allied to trachyte, consisting essentially of a triclinic feldspar, with pyroxene, hornblende, or hypersthene..
Aphanite :: Aphanite (n.) A very compact, dark-colored /ock, consisting of hornblende, or pyroxene, and feldspar, but neither of them in perceptible grains..
Trachyte :: Trachyte (n.) An igneous rock, usually light gray in color and breaking with a rough surface. It consists chiefly of orthoclase feldspar with sometimes hornblende and mica..
Dolerite :: Dolerite (n.) A dark-colored, basic, igneous rock, composed essentially of pyroxene and a triclinic feldspar with magnetic iron. By many authors it is considered equivalent to a coarse-grained basalt..
Feldspathose :: Feldspathose (a.) Pertaining to, or consisting of, feldspar..
Felspath :: Felspath (n.) See Feldspar.
Oligoclase :: Oligoclase (n.) A triclinic soda-lime feldspar. See Feldspar.
Basalt :: Basalt (n.) A rock of igneous origin, consisting of augite and triclinic feldspar, with grains of magnetic or titanic iron, and also bottle-green particles of olivine frequently disseminated..
Saussurite :: Saussurite (n.) A tough, compact mineral, of a white, greenish, or grayish color. It is near zoisite in composition, and in part, at least, has been produced by the alteration of feldspar..
Labradorite :: Labradorite (n.) A kind of feldspar commonly showing a beautiful play of colors, and hence much used for ornamental purposes. The finest specimens come from Labrador. See Feldspar..
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