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