Know all about Chalk and Alkali Feldspar Granite properties here. All properties of rocks are important as they define the type of rock and its application. Chalk belongs to Sedimentary Rocks while Alkali Feldspar Granite belongs to Igneous Rocks.Texture of Chalk is Clastic or Non-Clastic whereas that of Alkali Feldspar Granite is Phaneritic. Chalk appears Soft and Alkali Feldspar Granite appears Veined or Pebbled. The luster of Chalk is dull while that of Alkali Feldspar Granite is dull to grainy with sporadic parts pearly and vitreous. Chalk is available in grey, white, yellow colors whereas Alkali Feldspar Granite is available in black, grey, orange, pink, white colors. The commercial uses 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 and that of Alkali Feldspar Granite are curling, gemstone, laboratory bench tops, tombstones.