Know all about Alkali Feldspar Granite and Greywacke properties here. All properties of rocks are important as they define the type of rock and its application. Alkali Feldspar Granite belongs to Igneous Rocks while Greywacke belongs to Sedimentary Rocks.Texture of Alkali Feldspar Granite is Phaneritic whereas that of Greywacke is Clastic. Alkali Feldspar Granite appears Veined or Pebbled and Greywacke appears Dull. The luster of Alkali Feldspar Granite is dull to grainy with sporadic parts pearly and vitreous while that of Greywacke is dull. Alkali Feldspar Granite is available in black, grey, orange, 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 Alkali Feldspar Granite are curling, gemstone, laboratory bench tops, tombstones and that of Greywacke are as armour rock for sea walls, petroleum reservoirs, sea defence, tombstones.