Know all about Tonalite and Nephelinite properties here. All properties of rocks are important as they define the type of rock and its application. Tonalite and Nephelinite belong to Igneous Rocks.Texture of Tonalite is Phaneritic whereas that of Nephelinite is Aphanitic. Tonalite appears Banded and Foilated and Nephelinite appears Skeletal. The luster of Tonalite is subvitreous to dull while that of Nephelinite is vitreous to metallic. Tonalite is available in black, brown, light to dark grey, white colors whereas Nephelinite is available in black, brown, colourless, green, grey, white colors. The commercial uses of Tonalite are cemetery markers, creating artwork and that of Nephelinite are creating artwork, soil conditioner, source of magnesia (mgo).