Know all about Coal and Anorthosite properties here. All properties of rocks are important as they define the type of rock and its application. Coal belongs to Sedimentary Rocks while Anorthosite belongs to Igneous Rocks.Texture of Coal is Amorphous, Glassy whereas that of Anorthosite is Foliated, Glassy. Coal appears Veined or Pebbled and Anorthosite appears Layered, Banded, Veined and Shiny. The luster of Coal is dull to vitreous to submetallic while that of Anorthosite is pearly to subvitreous. Coal is available in black, brown, dark brown, grey, light to dark grey colors whereas Anorthosite is available in black, bluish - grey, brown, green, grey, light greenish grey, pink, white colors. The commercial uses of Coal are alumina refineries, electricity generation, liquid fuel, manufacture of soap, solvents, dyes, plastics and fibres, paper industry and that of Anorthosite are creating artwork, curling.