Know all about Charnockite and Chalk properties here. All properties of rocks are important as they define the type of rock and its application. Charnockite belongs to Igneous Rocks while Chalk belongs to Sedimentary Rocks.Texture of Charnockite is Granular whereas that of Chalk is Clastic or Non-Clastic. Charnockite appears Veined or Pebbled and Chalk appears Soft. The luster of Charnockite is not available while that of Chalk is dull. Charnockite is available in black, grey, orange, pink, white colors whereas Chalk is available in grey, white, yellow colors. The commercial uses of Charnockite are curling, gemstone, laboratory bench tops, tombstones 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.