- orthorhombic pyroxene
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Any of a group of minerals having the general formula XYSiO in which X is iron or magnesium and Y is iron or manganese.
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orthorhombic pyroxene
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pyroxene — pyroxenic /puy rok sen ik/, adj. /puy rok seen, peuh , puy rok seen /, n. any of a very common group of minerals of many varieties, silicates of magnesium, iron, calcium, and other elements, occurring as important constituents of many kinds of… … Universalium
Pyroxene — Pyr ox*ene, n. [F. pyrox[ e]ne, from Gr. ? fire + ? a stranger; so called because it was supposed to the be a stranger, or of rare occurrence, in igneous rocks,] (Min.) A common mineral occurring in monoclinic crystals, with a prismatic angle of… … The Collaborative International Dictionary of English
pyroxene — [pī räk′sēn΄] n. [Fr pyroxène < Gr pyr, FIRE + xenos, stranger: from its being foreign to igneous rocks] any of a group of monoclinic or orthorhombic silicate minerals usually containing iron or magnesium but not the hydroxyl radical, and… … English World dictionary
Pyroxene — Figure 1: A sample of pyroxenite, a rock consisting mostly of pyroxene minerals. The pyroxenes are a group of important rock forming inosilicate minerals found in many igneous and metamorphic rocks. They share a common structure consisting of… … Wikipedia
pyroxene group — noun : a group of silicate minerals closely related in crystal form and having the general formula ABSi2O6 where A represents usually Ca or Na and B is usually Mg, Fe, or Al that includes the orthorhombic species enstatite and hypersthene and… … Useful english dictionary
Silicate minerals — ▪ Table Silicate minerals name colour lustre Mohs hardness specific gravity Tectosilicates (three dimensional networks) feldspar (for other examples, see feldspar) orthoclase flesh red, white to pale yellow, red, green vitreous 6–6½ 2.6… … Universalium
enstatite — enstatitic /en steuh tit ik/, adj. /en steuh tuyt /, n. Mineral. a yellow green fibrous magnesium silicate, an orthorhombic pyroxene found in norites containing less than five percent ferrous oxide. [1855 60; < Gk enstát(es) adversary + ITE1] * * … Universalium
igneous rock — Any of various crystalline or glassy, noncrystalline rocks formed by the cooling and solidification of molten earth material (magma). Igneous rocks comprise one of the three principal classes of rocks, the others being metamorphic and sedimentary … Universalium
Hypersthene — is a common rock forming inosilicate mineral belonging to the group of orthorhombic pyroxenes. Many references have formally abandoned this term, preferring to categorise this mineral as enstatite or ferrosilite. It is found in igneous and some… … Wikipedia
bronzite — /bron zuyt/, n. a greenish brown or black mineral with a bronzelike luster, an orthorhombic pyroxene, (Mg,Fe)2(Si2O6), intermediate in composition between enstatite and hypersthene. [1810 20; BRONZE + ITE1; so called from its sheen] * * * … Universalium
