. . "stable"@en . . "MCOPGB"@en . "Orthopyroxene-microgabbro - A type of microgabbro. In the Rock Classification Scheme, it is the medium-grained equivalent of orthopyroxene-gabbro. British Geological Survey Research Report RR/99/06, section 5.1."@en . . "Orthopyroxene-microgabbro"@en . . "Orthopyroxene-microgabbro"@en .