pyroxene

How To Use pyroxene In A Sentence

• Other variants include feldspar-pyroxene-phyric lava and, rarely, aphyric lava.
• The magmatic evolution is dominated by low-pressure crystal fractionation of olivine, Cr-spinel, plagioclase and clinopyroxene.
• In addition to quartz, fluid inclusions can occur in carbonates, gypsum, halite, fluorite, feldspar, garnet, pyroxene, amphibole, tourmaline, olivine, and sphalerite; indeed in most minerals except phyllosilicates.
• Geochemically, the pyroxene nephelinite is highly enriched in LILE compared with the first one.
• Biotite, epidote and clinopyroxene are also occasionally present, whereas garnet is virtually absent.
• The majority of the rhyolites are porphyritic and contain phenocrysts of one or more of the following: plagioclase, clinopyroxene, magnetite, quartz and sanidine, plus accessory apatite and zircon.
• Pyroxene is exclusively diopsidic augite, with a composition relatively colse to the diopside - hedenbergite join.
• The majority of the rhyolites are porphyritic and contain phenocrysts of one or more of the following: plagioclase, clinopyroxene, magnetite, quartz and sanidine, plus accessory apatite and zircon.
• Several igneous dikes and sills have been intruded into this sedimentary sequence, the largest of which is the Great Whin Sill, a quartz-orthopyroxene dolerite of late Carboniferous age.
• Pyroxene, quartz and augite form the groundmass, as seen in section. The Long Labrador Trail