anorthosite
/əˈnɔrθəˌsaɪt/
noun
A plutonic rock composed largely of calcic plagioclase.
Because of the preponderance of the mineral anorthite (a calcium-rich variety of the mineral plagioclase feldspar) this rock type is called anorthosite.
noun
A plutonic rock composed largely of calcic plagioclase.
Because of the preponderance of the mineral anorthite (a calcium-rich variety of the mineral plagioclase feldspar) this rock type is called anorthosite.
