Know all about Arkose and Dunite properties here. All properties of rocks are important as they define the type of rock and its application. Arkose belongs to Sedimentary Rocks while Dunite belongs to Igneous Rocks.Texture of Arkose is Clastic whereas that of Dunite is Phaneritic. Arkose appears Rough and Dull and Dunite appears Rough and Shiny. The luster of Arkose is dull while that of Dunite is shiny. Arkose is available in reddish brown colors whereas Dunite is available in dark greenish - grey colors. The commercial uses of Arkose are in aquifers, soil conditioner, source of magnesia (mgo), tombstones and that of Dunite are creating artwork, gemstone, jewelry, source of chromite, platinum, nickel and garnet, source of diamonds.