augite

au·gite  (ôjt)

n.

A dark-green to black pyroxene mineral, (Ca,Na)(Mg,Fe,Al)(Si,Al)₂O₆, that contains large amounts of aluminum, iron, and magnesium.

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[Latin augtis, a precious stone, from Greek augts, from aug, brightness.]

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augite [ˈɔːgaɪt]

n

(Earth Sciences / Minerals) a black or greenish-black mineral of the pyroxene group, found in igneous rocks. Composition: calcium magnesium iron aluminium silicate. General formula: (Ca,Mg,Fe,Al)(Si,Al)₂O₆. Crystal structure: monoclinic

[from Latin augītēs, from Greek, from augē brightness]

augitic  [ɔːˈgɪtɪk] adj

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augite  (ôjt)

A glassy, dark-green to black variety of pyroxene. Chemical formula: (Ca,Na)(Mg,Fe,Al)(Si,Al)₂O₆.

Thesaurus

Noun

1.

augite - dark-green to black glassy mineral of the pyroxene group containing large amounts of aluminum and iron and magnesium mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition