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