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  • noun

Words related to pyroxene

any of a group of crystalline silicate mineral common in igneous and metamorphic rocks

References in periodicals archive ?
The minerals of gabbros include olivine, plagioclase, clinopyroxene and opaque mineral that altered to serpentine, amphibole, sericite and iron oxides.
5a), which could be explained by -20% clinopyroxene fractionation from other West Valley magmas but at pressures much higher than would be expected for an incipient rift in thin crust (Cousens et al.
Mafic minerals (biotite and hastingsitic hornblende with rare clinopyroxene inclusions) account for up to 10 vol% of the rock.
All five adzes are made of alkalic basalts containing olivine and clinopyroxene phenocrysts up to ~1 mm in size.
In contrast, the moon's surface appears to have roughly equal mixtures of these two minerals and one other, clinopyroxene.
Basalt is medium-grained, with ophitic texture formed by plagioclase and clinopyroxene and matrix consisting of chlorite, zeolite, Ti-magnetite, titanite, ilmenite, apatite and pyrite.
Tremolite schist consists mainly of tremolite-actinolite + calcic clinopyroxene + talc with minor plagioclase.
Within this prospect there are also platinum and palladium enriched magnetite - clinopyroxene veins cutting the dunite.
The primary mineralogy of komatiites is simple: phenocrysts of olivine and spinel/chromite (+/pyroxene) are enclosed in a groundmass composed of glass, calcic clinopyroxene and minor orthopyroxene.
It is here that eclogite forms consisting of red pyrope garnet and green clinopyroxene.
Objectives of this study include: 1) determining mineral composition of olivine, clinopyroxene, and orthopyroxene in the xenoliths; 2) examining individual chemical zoning characteristics or orthopyroxene, clinopyroxene, and olivine; 3) comparing mineral chemistry and zoning differences between xenoliths from different eruption styles; and 4) use xenolith compositions to determine lithospheric mantle pressure and temperature.
Clinopyroxene phenocrysts are also zoned and plot on or near the diopside-augite boundary.
In a mine at the Jagersfontein, Haggerty and Sautter discovered two highly unusual rock fragments, containing numerous specks of the mineral clinopyroxene scattered within garnet.