Definition of pyroxene

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Pyroxene (n.) A common mineral occurring in monoclinic crystals, with a prismatic angle of nearly 90¡, and also in massive forms which are often laminated. It varies in color from white to dark green and black, and includes many varieties differing in color and composition, as diopside, malacolite, salite, coccolite, augite, etc. They are all silicates of lime and magnesia with sometimes alumina and iron. Pyroxene is an essential constituent of many rocks, especially basic igneous rocks, as basa

Lern More About Pyroxene

Hypersthene :: Hypersthene (n.) An orthorhombic mineral of the pyroxene group, of a grayish or greenish black color, often with a peculiar bronzelike luster (schiller) on the cleavage surface..
Jeffersonite :: Jeffersonite (n.) A variety of pyroxene of olive-green color passing into brown. It contains zinc.
Fassaite :: Fassaite (n.) A variety of pyroxene, from the valley of Fassa, in the Tyrol..
Uralite :: Uralite (n.) Amphibole resulting from the alternation of pyroxene by paramorphism. It is not uncommon in massive eruptive rocks.
Syenitic :: Syenite (n.) A granular, crystalline, ingeous rock composed of orthoclase and hornblende, the latter often replaced or accompanied by pyroxene or mica. Syenite sometimes contains nephelite (elaeolite) or leucite, and is then called nephelite (elaeolite) syenite or leucite syenite..
Diopside :: Diopside (n.) A crystallized variety of pyroxene, of a clear, grayish green color; mussite..
Pyrgom :: Pyrgom (n.) A variety of pyroxene; -- called also fassaite.
Pyroxenic :: Pyroxenic (a.) Containing pyroxene; composed chiefly of pyroxene.
Aphanite :: Aphanite (n.) A very compact, dark-colored /ock, consisting of hornblende, or pyroxene, and feldspar, but neither of them in perceptible grains..
Uralitization :: Uralitization (n.) The change of pyroxene to amphibole by paramorphism.
Bronzite :: Bronzite (n.) A variety of enstatite, often having a bronzelike luster. It is a silicate of magnesia and iron, of the pyroxene family..
Pyroxene :: Pyroxene (n.) A common mineral occurring in monoclinic crystals, with a prismatic angle of nearly 90¡, and also in massive forms which are often laminated. It varies in color from white to dark green and black, and includes many varieties differing in color and composition, as diopside, malacolite, salite, coccolite, augite, etc. They are all silicates of lime and magnesia with sometimes alumina and iron. Pyroxene is an essential constituent of many rocks, especially basic igneous rocks, as basa
Lherzolite :: Lherzolite (n.) An igneous rock consisting largely of chrysolite, with pyroxene and picotite (a variety of spinel containing chromium)..
Asbestos :: Asbestos (n.) A variety of amphibole or of pyroxene, occurring in long and delicate fibers, or in fibrous masses or seams, usually of a white, gray, or green-gray color. The name is also given to a similar variety of serpentine..
Augite :: Augite (n.) A variety of pyroxene, usually of a black or dark green color, occurring in igneous rocks, such as basalt; -- also used instead of the general term pyroxene..
Peridotite :: Peridotite (n.) An eruptive rock characterized by the presence of chrysolite (peridot). It also usually contains pyroxene, enstatite, chromite, etc. It is often altered to serpentine..
Diabase :: Diabase (n.) A basic, dark-colored, holocrystalline, igneous rock, consisting essentially of a triclinic feldspar and pyroxene with magnetic iron; -- often limited to rocks pretertiary in age. It includes part of what was early called greenstone..
Diallage :: Diallage (n.) A dark green or bronze-colored laminated variety of pyroxene, common in certain igneous rocks..
Malacolite :: Malacolite (n.) A variety of pyroxene.
Enstatite :: Enstatite (n.) A mineral of the pyroxene group, orthorhombic in crystallization; often fibrous and massive; color grayish white or greenish. It is a silicate of magnesia with some iron. Bronzite is a ferriferous variety..
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