Charnockite

Charnockite /ˈtʃɑːrnəkaɪt/ is applied to any orthopyroxene-bearing quartz-feldspar rock, composed mainly of quartz, perthite or antiperthite and orthopyroxene (usually hypersthene) formed at high temperature and pressure, commonly found in granulite facies metamorphic terrain, as an end-member of the charnockite series.