Know all about Borolanite and Greywacke properties here. All properties of rocks are important as they define the type of rock and its application. Borolanite belongs to Igneous Rocks while Greywacke belongs to Sedimentary Rocks.Texture of Borolanite is Granular whereas that of Greywacke is Clastic. Borolanite appears Banded and Foilated and Greywacke appears Dull. The luster of Borolanite is greasy to dull while that of Greywacke is dull. Borolanite is available in brown, buff, cream, green, grey, pink, white colors whereas Greywacke is 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 Borolanite are cemetery markers and that of Greywacke are as armour rock for sea walls, petroleum reservoirs, sea defence, tombstones.