Know all about Trachyandesite and Phyllite properties here. All properties of rocks are important as they define the type of rock and its application. Trachyandesite belongs to Igneous Rocks while Phyllite belongs to Metamorphic Rocks.Texture of Trachyandesite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular whereas that of Phyllite is Phyllitic Sheen, Slaty. Trachyandesite appears Dull and Soft and Phyllite appears Crinkled or Wavy. The luster of Trachyandesite is earthy while that of Phyllite is phyllitic. Trachyandesite is available in black, brown, light to dark grey colors whereas Phyllite is available in black to grey, light greenish grey colors. The commercial uses of Trachyandesite are creating artwork, pottery and that of Phyllite are cemetery markers, commemorative tablets, creating artwork, writing slates.