Know all about Trachyte and Flint properties here. All properties of rocks are important as they define the type of rock and its application. Trachyte belongs to Igneous Rocks while Flint belongs to Sedimentary Rocks.Texture of Trachyte is Aphanitic to Porphyritic whereas that of Flint is Banded, Rough. Trachyte appears Banded and Flint appears Glassy or Pearly. The luster of Trachyte is metallic while that of Flint is vitreous. Trachyte is available in black, brown, dark greenish - grey, green, grey, light to dark grey, white colors whereas Flint is available in black, brown, green, grey, red, white colors. The commercial uses of Trachyte are cemetery markers, creating artwork and that of Flint are creating artwork, gemstone, in fire-starting tools, manufacture of tools, metallurgical flux, jewelry, to ignite fire, used in flintlock firearms.