Orthopyroxene

Quick meaning: Orthopyroxene is a noun meaning (mineralogy) Any pyroxene that forms orthorhombic crystals.

Meaning

(mineralogy) Any pyroxene that forms orthorhombic crystals.

Example Sentences

However, the relatively low Al₂O₃ content of the co-existing orthopyroxenes (2.2 wt%) is not consistent with an upper mantle origin (Binns et al. 1970) and therefore probably crystallised at crustal pressures.

The meteorite contains abundant, distinct to poorly defined chondrules (about 40 volume %). They are enclosed in a recrystallised, heavily iron-stained, but coherent matrix of irregular fragments of olivine and orthopyroxene, together with fragmented chrondrules and small grains and interstitial areas of oligoclase.

Biotite from lava flows is invariably rimmed or totally replaced by an exceedingly fine-grained, almost isotropic intergrowth of K-feldspar, orthopyroxene, cordierite and ilmenite, probably as a result of dehydration of the magma on eruption. Cordierite and orthopyroxene (5% each) occur as euhedral phenocrysts 1 to 2 mm in diameter, but cordierite can be up to 5 mm across and occur as anhedral ovoids.

Word Forms

• orthopyroxenes

Related Words

Related dictionary entries include clinopyroxene, garnet, orthopyroxine, orthopyroxenite, clinopyroxenite, pyroxenoid.

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