Know all about Chalk and Flint properties here. All properties of rocks are important as they define the type of rock and its application. Chalk and Flint belong to Sedimentary Rocks.Texture of Chalk is Clastic or Non-Clastic whereas that of Flint is Banded, Rough. Chalk appears Soft and Flint appears Glassy or Pearly. The luster of Chalk is dull while that of Flint is vitreous. Chalk is available in grey, white, yellow colors whereas Flint is available in black, brown, green, grey, red, 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 Flint are creating artwork, gemstone, in fire-starting tools, manufacture of tools, metallurgical flux, jewelry, to ignite fire, used in flintlock firearms.