. "Protocataclasite"@en . "Protocataclasite"@en . . "stable"@en . "Protocataclasite - A type of cataclastic-rock. In the Rock Classification Scheme, it is one in which fragments significantly coarser than the matrix comprise more than 50% by volume of the rock. British Geological Survey Research Report RR/99/02, section 7.2 and table 4."@en . . "PROCAT"@en . .