Know all about Phyllite and Basaltic Trachyandesite properties here. All properties of rocks are important as they define the type of rock and its application. Phyllite belongs to Metamorphic Rocks while Basaltic Trachyandesite belongs to Igneous Rocks.Texture of Phyllite is Phyllitic Sheen, Slaty whereas that of Basaltic Trachyandesite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular. Phyllite appears Crinkled or Wavy and Basaltic Trachyandesite appears Dull and Soft. The luster of Phyllite is phyllitic while that of Basaltic Trachyandesite is not available. Phyllite is available in black to grey, light greenish grey colors whereas Basaltic Trachyandesite is available in black, brown, light to dark grey colors. The commercial uses of Phyllite are cemetery markers, commemorative tablets, creating artwork, writing slates and that of Basaltic Trachyandesite are an oil and gas reservoir, commemorative tablets, creating artwork.