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