augite


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au·gite

 (ô′jīt′)
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.
[Latin augītis, a precious stone, from Greek augītēs, from augē, brightness.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

augite

(ˈɔːɡaɪt)
n
(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
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

au•gite

(ˈɔ dʒaɪt)

n.
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.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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
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References in periodicals archive ?
Furthermore, minerals common to both series (chromite, olivine, augite, plagioclase, magnetite and ilmenite) are compositionally distinct reflecting fundamental chemical differences between the two magma series.
Igneous rock associations 4. Oceanic island volcanism I mineralogy and petrology
Essential minerals are phenocrysts and glomerocrysts of anorthoclase, sanidine up to 1,5 cm and anorthoclase-mantled plagioclase; accessory minerals are red biotite, and hastingsite while trace minerals are augite, zircon, sphene and magnetite.
The Paipa volcano, Eastern Cordillera of Colombia, South America (part II): petrography and major elements petrology
In addition to amphibole or augite, they also contain zoned plagioclase (andesine-labradorite, commonly saussuritized), opaque oxides, apatite, sphene, and secondary minerals.
Petrography and major element chemistry of mafic dykes in the Nagar Parkar Igneous Complex, Tharparkar, Sindh
Gross (1962) reported the occurrence of fayalite in an "augite syenite."
Famous mineral localities: the Cripple Creek mining district Colorado
Coughlan (1986) recognized five units in the Staples Mountain Gabbro, designated I to V from inferred bottom to top: I--gabbro, anorthositic gabbro, and olivine gabbro; II--subophitic augite gabbro; III--interlayered norite and anortbosite; IV--unlayered augite gabbro and minor olivine gabbro; V --unlayered gabbronorite, with increased orthopyroxene and no olivine, in contrast to unit IV.
The Moosehorn Plutonic Suite, southeastern Maine and southwestern New Brunswick: age, petrochemistry, and tectonic setting
Euhedral to subhedral plagioclase and subhedral to anhedral augite with minor olivine and hornblende are arranged in subpoikilitic manner (Fig.
Petrology and geochemistry of gabbros from the Muslim Bagh Ophiolite: implications for their petrogenesis and tectonic setting
The host rocks were originally rich in enstatite, forsterite, anorthite, augite and chromite, but are now largely altered to mixtures of serpentine, chlorite, amphibole, epidote, garnet, and minor prehnite, magnetite, talc, magnesite, opal and chalcedony.
The Lord Brassey Mine, Tasmania. (Famous Mineral Localities)
The samples, which ate all very similar, contain augite ([less than or equal to] 5mm, ~[Wo.sub.40], [En.sub.50]) and plagioclase ([less than or equal to] 4.5mm, [less than or equal to] [An.sub.69]) phenocrysts and glomerocrysts ([less than or equal to] 2 mm) together comprising less than 5% of the rock (Fig.
A petrochemical study of basaltic layering at Henley Harbour, Labrador, using multidimensional scaling
Petrographic examination and microprobe analyses of the ultramafic rocks within the Greendale Complex show that they contain tschermakitic hornblende (magnesiohastingsite) which poikilitically encloses olivine, hypersthene, clinopyroxene (augite, endiopside, diopside), and chromite.
Atlantic Geoscience Society
Their principal constituents include titaniferous augite, aegirine augite, hornblende, phlogopite, plagioclase (An 37-88), devitrified volcnic glass, noseam and olivine.
Late Cretaceous mantle plume activity in Ceno-Tethys: Evidenced by intra- plate volcanism in the Naik Area, Balochistan, Pakistan
A typical mineral assemblage for mafic samples includes augite, albite, chlorite, epidote, biotite, and ilmenite-spinel.
Geochemical comparison of mafic, felsic, and ultramafic rocks in the Hurricane Mountain melange to the Boil Mountain ophiolite complex, west-central Maine
52 (= diopside or augite) (1988), 535 Ferridravite (= povondraite) Grice et al.: Am.
The IMA Commission on New Minerals and Mineral Names: Procedures and Guidelines on Mineral Nomenclature 1998

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