Know all about Chalk and Arkose properties here. All properties of rocks are important as they define the type of rock and its application. Chalk and Arkose belong to Sedimentary Rocks.Texture of Chalk is Clastic or Non-Clastic whereas that of Arkose is Clastic. Chalk appears Soft and Arkose appears Rough and Dull. The luster of Chalk and Arkose is dull. Chalk is available in grey, white, yellow colors whereas Arkose is available in reddish brown 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 Arkose are in aquifers, soil conditioner, source of magnesia (mgo), tombstones.