Know all about Slate and Arkose properties here. All properties of rocks are important as they define the type of rock and its application. Slate belongs to Metamorphic Rocks while Arkose belongs to Sedimentary Rocks.Texture of Slate is Foliated whereas that of Arkose is Clastic. Slate appears Dull and Arkose appears Rough and Dull. The luster of Slate and Arkose is dull. Slate is available in black, brown, buff, green, light to dark grey, purple, red, shades of blue colors whereas Arkose is available in reddish brown 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 Arkose are in aquifers, soil conditioner, source of magnesia (mgo), tombstones.