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