Know all about Anthracite and Tachylite properties here. All properties of rocks are important as they define the type of rock and its application. Anthracite belongs to Metamorphic Rocks while Tachylite belongs to Igneous Rocks.Texture of Anthracite is Amorphous, Glassy whereas that of Tachylite is Vitreous. Anthracite appears Veined or Pebbled and Tachylite appears Glassy. The luster of Anthracite is shiny while that of Tachylite is resinous. Anthracite and Tachylite are available in black, brown, dark brown, grey, light to dark grey colors. The commercial uses of Anthracite are alumina refineries, electricity generation, liquid fuel, manufacture of soap, solvents, dyes, plastics and fibres, paper industry and that of Tachylite are cemetery markers, creating artwork.