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

[Latin augītis, a precious stone, from Greek augītēs, from augē, brightness.]


(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
[C19: from Latin augītēs, from Greek, from augē brightness]
augitic adj


(ˈɔ dʒaɪt)

a silicate mineral, chiefly of calcium, magnesium, iron, and aluminum: a dark green to black variety of monoclinic pyroxene, characteristic of basic rocks.
[1780–90; < Latin augītis a kind of precious stone]
au•git•ic (ɔˈdʒɪt ɪk) adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.augite - dark-green to black glassy mineral of the pyroxene group containing large amounts of aluminum and iron and magnesiumaugite - 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
References in periodicals archive ?
When comparing the compositions of chemically zoned minerals, such as olivine and augite, the problem is that the cores and rims, even of individual grains, may be so different that we could demonstrate statistically that they do not belong to the same population.
Titanium augite of pink to lilac colour is typical of alkaline basalts (William et al.
The sets of minerals of this skarn include quartz, calcite, grossular, augite, and gypsum.
Epidote is an indication of mafic igneous protolith, along with augite and hornblende.
The specimens that were taken around Basdere involve augite as a main component; zircon and apatite as secondary components.
Furthermore, the structure of clinopyroxene, which is present in mainly in the form of augite, is articulated with each other tetrahedra Si[O.
The phenocryst assemblage is plagioclase augite --hypersthene, these minerals are usually present in glomerocryst assemblages as: 1.
Mafic volcanic rocks are dominantly basaltic and typically contain augite and plagioclase phenocrysts.
The melanophyres of the Ilfeld Basin, which come from the earlier or earliest of the eruptive episodes, are brown to black, with a fine-grained groundmass composed of oligoclase, augite, biotite, apatite and magnetite, with phenocrysts, most of which are tabular crystals of augite (Luedecke, 1896).