Know all about Trachyte and Gossan properties here. All properties of rocks are important as they define the type of rock and its application. Trachyte belongs to Igneous Rocks while Gossan belongs to Metamorphic Rocks.Texture of Trachyte is Aphanitic to Porphyritic whereas that of Gossan is Rough, Sandy. Trachyte appears Banded and Gossan appears Dull and Banded. The luster of Trachyte and Gossan is metallic. Trachyte is available in black, brown, dark greenish - grey, green, grey, light to dark grey, white colors whereas Gossan is available in brown, brown- black, gold, green, rust colors. The commercial uses of Trachyte are cemetery markers, creating artwork and that of Gossan are cemetery markers, commemorative tablets, gemstone.