Definition of orthopyroxene in English:



  • A mineral of the pyroxene group crystallizing in the orthorhombic system.

    ‘Some edenitic hornblende crystals contain cores of orthopyroxene.’
    • ‘The sample is a weakly foliated granulite formed of plagioclase, orthopyroxene, clinopyroxene and minor hornblende.’
    • ‘Other common minor constituents of eclogite include kyanite, orthopyroxene, rutile, amphibole, pyrite, and white mica.’
    • ‘The pegmatite is composed of microcline, plagioclase and quartz with minor amounts of clinopyroxene, orthopyroxene, ilmenite and zircon.’
    • ‘The latter form by dehydration melting at less than 10-12 kbar leaving a residue of augite, orthopyroxene, plagioclase and varying amounts of amphibole.’



/ˌôrTHōpīˈräksēn/ /ˌɔrθoʊpaɪˈrɑksin/