orthopyroxene
/ˌɔːθə(ʊ)pʌɪˈrɒksiːn
/noun [mass noun]
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.