Know all about Greywacke and Cataclasite properties here. All properties of rocks are important as they define the type of rock and its application. Greywacke belongs to Sedimentary Rocks while Cataclasite belongs to Metamorphic Rocks.Texture of Greywacke is Clastic whereas that of Cataclasite is Clastic. Greywacke appears Dull and Cataclasite appears Dull and Banded. The luster of Greywacke is dull while that of Cataclasite is vitreous. Greywacke and Cataclasite are available in beige, black, brown, colourless, cream, dark brown, green, grey, light green, light to dark grey, pink, red, white, yellow colors. The commercial uses of Greywacke are as armour rock for sea walls, petroleum reservoirs, sea defence, tombstones and that of Cataclasite are commemorative tablets, creating artwork.