Know all about Chalk and Lherzolite properties here. All properties of rocks are important as they define the type of rock and its application. Chalk belongs to Sedimentary Rocks while Lherzolite belongs to Igneous Rocks.Texture of Chalk is Clastic or Non-Clastic whereas that of Lherzolite is Grenue. Chalk appears Soft and Lherzolite appears Glassy, Vesicular and Foilated. The luster of Chalk is dull while that of Lherzolite is subvitreous to dull. Chalk is available in grey, white, yellow colors whereas Lherzolite is available in black, dark greenish - grey, green, pink, purple 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 Lherzolite are as armour rock for sea walls, source of magnesia (mgo), used in aquariums.