Know all about Greywacke and Evaporite properties here. All properties of rocks are important as they define the type of rock and its application. Greywacke and Evaporite belong to Sedimentary Rocks.Texture of Greywacke is Clastic whereas that of Evaporite is Earthy. Greywacke appears Dull and Evaporite appears Glassy, Vesicular and Foilated. The luster of Greywacke is dull while that of Evaporite is subvitreous to dull. Greywacke is available in beige, black, brown, colourless, cream, dark brown, green, grey, light green, light to dark grey, pink, red, white, yellow colors whereas Evaporite is available in colourless, green, grey, silver, white colors. The commercial uses of Greywacke are as armour rock for sea walls, petroleum reservoirs, sea defence, tombstones and that of Evaporite are used in the manufacture of ceramic powder, used in the preparation of sulfuric acid and silicon diborite.