Know all about Siltstone and Lherzolite properties here. All properties of rocks are important as they define the type of rock and its application. Siltstone belongs to Sedimentary Rocks while Lherzolite belongs to Igneous Rocks.Texture of Siltstone is Clastic whereas that of Lherzolite is Grenue. Siltstone appears Rough and Lherzolite appears Glassy, Vesicular and Foilated. The luster of Siltstone is dull while that of Lherzolite is subvitreous to dull. Siltstone is available in brown, red, reddish brown colors whereas Lherzolite is available in black, dark greenish - grey, green, pink, purple colors. The commercial uses of Siltstone are raw material for the manufacture of mortar, soil conditioner and that of Lherzolite are as armour rock for sea walls, source of magnesia (mgo), used in aquariums.