Know all about Trachyandesite and Shale properties here. All properties of rocks are important as they define the type of rock and its application. Trachyandesite belongs to Igneous Rocks while Shale belongs to Sedimentary Rocks.Texture of Trachyandesite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular whereas that of Shale is Clastic, Splintery. Trachyandesite appears Dull and Soft and Shale appears Muddy. The luster of Trachyandesite is earthy while that of Shale is dull. Trachyandesite is available in black, brown, light to dark grey colors whereas Shale is available in black, brown, buff, green, grey, red, yellow colors. The commercial uses of Trachyandesite and Shale are creating artwork, pottery.