Know all about Greywacke and Talc carbonate properties here. All properties of rocks are important as they define the type of rock and its application. Greywacke belongs to Sedimentary Rocks while Talc carbonate belongs to Metamorphic Rocks.Texture of Greywacke is Clastic whereas that of Talc carbonate is Very Soft. Greywacke appears Dull and Talc carbonate appears Soft. The luster of Greywacke is dull while that of Talc carbonate is pearly. Greywacke and Talc carbonate 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 Talc carbonate are manufacturing of baby powder.