A mineral of the pyroxene group crystallizing in the orthorhombic system.
More example sentences
- 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.
Definition of orthopyroxene in:
- The British & World English dictionary