enstatite

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]

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Common silicate mineral in the pyroxene family.

It is the stable form of magnesium silicate (MgSiO3, often with up to 10% iron) in magnesium-and iron-rich igneous rock types. Enstatite crystallizes in the orthorhombic system (three unequal axes at right angles to each other).

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      common silicate mineral in the pyroxene family. It is the stable form of magnesium silicate (MgSiO3, often with up to 10 percent iron) at low temperatures. See orthopyroxene.

      The other forms of magnesium silicate are protoenstatite, which occurs at very high temperatures, and clinoenstatite, which occurs in unstable form at low temperatures. Enstatite and protoenstatite crystallize in the orthorhombic system (three unequal axes at right angles to each other); clinoenstatite crystallizes in the monoclinic (monoclinic system) (three unequal axes with one oblique intersection). Clinoenstatite forms a series with clinoferrosilite that is analogous to the enstatite–ferrosilite series.

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Universalium. 2010.

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  • Enstatite — En sta*tite, n. [Named fr. Gr. ? an adversary, because infusible before the blowpipe.] (Min.) A mineral of the pyroxene group, orthorhombic in crystallization; often fibrous and massive; color grayish white or greenish. It is a silicate of… …   The Collaborative International Dictionary of English

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  • enstatite — enstatitas statusas T sritis chemija apibrėžtis Mineralas. formulė Mg₂[Si₂O₆] atitikmenys: angl. enstatite rus. энстатит …   Chemijos terminų aiškinamasis žodynas

  • enstatite — noun A form of pyroxene consisting solely of magnesium silicate …   Wiktionary

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