Know all about Trachyandesite and Schist properties here. All properties of rocks are important as they define the type of rock and its application. Trachyandesite belongs to Igneous Rocks while Schist belongs to Metamorphic Rocks.Texture of Trachyandesite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular whereas that of Schist is Foliated, Platy. Trachyandesite appears Dull and Soft and Schist appears Layered and Shiny. The luster of Trachyandesite is earthy while that of Schist is shiny. Trachyandesite is available in black, brown, light to dark grey colors whereas Schist is available in black, blue, brown, dark brown, green, grey, silver colors. The commercial uses of Trachyandesite are creating artwork, pottery and that of Schist are used in aquariums, writing slates.