Know all about Anthracite and Chalk properties here. All properties of rocks are important as they define the type of rock and its application. Anthracite belongs to Metamorphic Rocks while Chalk belongs to Sedimentary Rocks.Texture of Anthracite is Amorphous, Glassy whereas that of Chalk is Clastic or Non-Clastic. Anthracite appears Veined or Pebbled and Chalk appears Soft. The luster of Anthracite is shiny while that of Chalk is dull. Anthracite is available in black, brown, dark brown, grey, light to dark grey colors whereas Chalk is available in grey, white, yellow 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 Chalk are alumina refineries, creating artwork, drawing on blackboards, gymnasts, athletes and mountain climbers use for grip, in aquifers, paper industry, production of lime, raw material for manufacture of quicklime, slaked lime, soil conditioner, whiting, whiting material in toothpaste, paint and paper.