Know all about Slate and Chalk properties here. All properties of rocks are important as they define the type of rock and its application. Slate belongs to Metamorphic Rocks while Chalk belongs to Sedimentary Rocks.Texture of Slate is Foliated whereas that of Chalk is Clastic or Non-Clastic. Slate appears Dull and Chalk appears Soft. The luster of Slate and Chalk is dull. Slate is available in black, brown, buff, green, light to dark grey, purple, red, shades of blue colors whereas Chalk is available in grey, white, yellow colors. The commercial uses of Slate are blackboards, commemorative tablets, laboratory bench tops, standard material for the bed of billiard table, standard material for the beds of pool and snooker table, tombstones, used in aquariums, writing slates 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.