Know all about Arkose and Tonalite properties here. All properties of rocks are important as they define the type of rock and its application. Arkose belongs to Sedimentary Rocks while Tonalite belongs to Igneous Rocks.Texture of Arkose is Clastic whereas that of Tonalite is Phaneritic. Arkose appears Rough and Dull and Tonalite appears Banded and Foilated. The luster of Arkose is dull while that of Tonalite is subvitreous to dull. Arkose is available in reddish brown colors whereas Tonalite is available in black, brown, light to dark grey, white colors. The commercial uses of Arkose are in aquifers, soil conditioner, source of magnesia (mgo), tombstones and that of Tonalite are cemetery markers, creating artwork.