Know all about Chalk and Oil shale properties here. All properties of rocks are important as they define the type of rock and its application. Chalk and Oil shale belong to Sedimentary Rocks.Texture of Chalk is Clastic or Non-Clastic whereas that of Oil shale is Splintery. Chalk appears Soft and Oil shale appears Muddy. The luster of Chalk and Oil shale is dull. Chalk is available in grey, white, yellow colors whereas Oil shale is available in black, brown, buff, green, grey, red, yellow 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 Oil shale are an oil and gas reservoir.