Know all about Chalk and Marl properties here. All properties of rocks are important as they define the type of rock and its application. Chalk and Marl belong to Sedimentary Rocks.Texture of Chalk is Clastic or Non-Clastic whereas that of Marl is Earthy. Chalk appears Soft and Marl appears Rough and Dull. The luster of Chalk and Marl is dull. Chalk is available in grey, white, yellow colors whereas Marl is available in beige, brown, green, grey, white colors. The commercial uses of Chalk and Marl 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.