Know all about Appinite and Greywacke properties here. All properties of rocks are important as they define the type of rock and its application. Appinite belongs to Igneous Rocks while Greywacke belongs to Sedimentary Rocks.Texture of Appinite is Porphyritic whereas that of Greywacke is Clastic. Appinite appears Dull, Banded and Foilated and Greywacke appears Dull. The luster of Appinite is subvitreous to dull while that of Greywacke is dull. Appinite is available in black, bluish - grey, brown, dark greenish - grey, green, grey 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 Appinite are an oil and gas reservoir, as a feed additive for livestock, gemstone, metallurgical flux, production of lime, soil conditioner and that of Greywacke are as armour rock for sea walls, petroleum reservoirs, sea defence, tombstones.