Know all about Tonalite and Dolomite properties here. All properties of rocks are important as they define the type of rock and its application. Tonalite belongs to Igneous Rocks while Dolomite belongs to Sedimentary Rocks.Texture of Tonalite is Phaneritic whereas that of Dolomite is Earthy. Tonalite appears Banded and Foilated and Dolomite appears Glassy or Pearly. The luster of Tonalite is subvitreous to dull while that of Dolomite is vitreous and pearly. Tonalite is available in black, brown, light to dark grey, white colors whereas Dolomite is available in black, brown, colourless, green, grey, pink, white colors. The commercial uses of Tonalite are cemetery markers, creating artwork and that of Dolomite are an oil and gas reservoir, as a feed additive for livestock, gemstone, metallurgical flux, production of lime, soil conditioner, source of magnesia (mgo).