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