Know all about Trachyandesite and Coquina properties here. All properties of rocks are important as they define the type of rock and its application. Trachyandesite belongs to Igneous Rocks while Coquina belongs to Sedimentary Rocks.Texture of Trachyandesite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular whereas that of Coquina is Clastic. Trachyandesite appears Dull and Soft and Coquina appears Layered, Banded, Veined and Shiny. The luster of Trachyandesite is earthy while that of Coquina is dull to vitreous to submetallic. Trachyandesite is available in black, brown, light to dark grey colors whereas Coquina is available in beige, buff, orange colors. The commercial uses of Trachyandesite and Coquina are creating artwork, pottery.