Know all about Gossan and Alkali Feldspar Granite properties here. All properties of rocks are important as they define the type of rock and its application. Gossan belongs to Metamorphic Rocks while Alkali Feldspar Granite belongs to Igneous Rocks.Texture of Gossan is Rough, Sandy whereas that of Alkali Feldspar Granite is Phaneritic. Gossan appears Dull and Banded and Alkali Feldspar Granite appears Veined or Pebbled. The luster of Gossan is metallic while that of Alkali Feldspar Granite is dull to grainy with sporadic parts pearly and vitreous. Gossan is available in brown, brown- black, gold, green, rust colors whereas Alkali Feldspar Granite is available in black, grey, orange, pink, white colors. The commercial uses of Gossan are cemetery markers, commemorative tablets, gemstone and that of Alkali Feldspar Granite are curling, gemstone, laboratory bench tops, tombstones.