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Enstatite

Enstatite is a mineral; the magnesium endmember of the pyroxene silicate mineral series enstatite (MgSiO3) – ferrosilite (FeSiO3). The magnesium rich members of the solid solution series are common rock-forming minerals found in igneous and metamorphic rocks. The intermediate composition, (Mg,Fe)SiO3, has historically been known as hypersthene, although…

Occurrence, Polymorphs and varieties & In space

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2V angle
55–90°
Birefringence
δ = 0.009–0.011
Category
Inosilicate minerals (single chain)
Cleavage
Good/distinct on
Color
White, grey, green, yellow or brown - colorless in thin section.
Crystal class
Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m)

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Overview

Polymorphs and varieties

Identification

Occurrence

In space

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Map overview Semantic statistics

Enstatite

Nodes69
Edges68
Triples59
Avg. degree1.97
Density0.028986
Components1

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Enstatite

Top relations

related to Occurrence · 7
Enstatite → Earth's, En90Fs10, Isolated, It, Magnesian, Measurements, Xenoliths
related to Polymorphs and varieties · 7
Enstatite → Most, P21/c, Pbca, Pbcn, The, This, Weathered
related to In space · 5
Enstatite → E-type, Many, NGC, Solar System, The Hungaria
related to Identification · 3
Enstatite → Mohs, They, This
is a · 2
Enstatite → common mineral in meteorites, mineral
2V angle · 1
Enstatite → 55–90°
Birefringence · 1
Enstatite → δ = 0.009–0.011
Category · 1
Enstatite → Inosilicate minerals (single chain)
Cleavage · 1
Enstatite → Good/distinct on
Color · 1
Enstatite → White, grey, green, yellow or brown - colorless in thin section.

Important terminology Word statistics

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Important terminology

orthopyroxene crystals space rocks composition minerals orthorhombic also mineral series color metamorphic hypersthene polymorphs pyroxene common found known although green

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Enstatite2V angle55–90°1.00infobox
EnstatiteBirefringenceδ = 0.009–0.0111.00infobox
EnstatiteCategoryInosilicate minerals (single chain)1.00infobox
EnstatiteCleavageGood/distinct on1.00infobox
EnstatiteColorWhite, grey, green, yellow or brown - colorless in thin section.1.00infobox
EnstatiteCrystal classDipyramidal (mmm) H-M symbol: (2/m 2/m 2/m)1.00infobox
EnstatiteCrystal habitPrismatic crystals, commonly lamellar, fibrous, or massive1.00infobox
EnstatiteCrystal systemOrthorhombic1.00infobox
EnstatiteDiaphaneityTranslucent to opaque1.00infobox
EnstatiteFormulaMgSiO31.00infobox
EnstatiteFormula mass100.387 g·mol−11.00infobox
EnstatiteFractureUneven1.00infobox
EnstatiteGroupPyroxene group, orthopyroxene subgroup1.00infobox
EnstatiteIMA symbolEn1.00infobox
EnstatiteLusterVitreous, pearly on cleavage1.00infobox
EnstatiteMohs scale hardness5 to 61.00infobox
EnstatiteOptical propertiesBiaxial (+)1.00infobox
EnstatitePleochroismPink to green pleochroism diagnostic for enstatite, pale green to pale orange perpendicular to pink-green axis1.00infobox
EnstatiteRefractive indexnα = 1.650–1.668; nβ = 1.652–1.673; nγ = 1.659–1.6791.00infobox
EnstatiteSpace groupPbca1.00infobox
EnstatiteSpecific gravity3.2–3.31.00infobox
EnstatiteStreakGray1.00infobox
EnstatiteStrunz classification9.DA.051.00infobox
EnstatiteTenacityBrittle1.00infobox
EnstatiteTwinningSimple and lamellar on1.00infobox
EnstatiteUnit cella = 18.23, b = 8.84 c = 5.19 [Å]; Z = 81.00infobox
Enstatiteis amineral0.90text
Enstatiteis acommon mineral in meteorites0.90text

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