Know all about Tonalite and Rhyodacite properties here. All properties of rocks are important as they define the type of rock and its application. Tonalite and Rhyodacite belong to Igneous Rocks.Texture of Tonalite is Phaneritic whereas that of Rhyodacite is Earthy. Tonalite appears Banded and Foilated and Rhyodacite appears Skeletal. The luster of Tonalite is subvitreous to dull while that of Rhyodacite is greasy to dull. Tonalite is available in black, brown, light to dark grey, white colors whereas Rhyodacite is available in black to grey, dark greenish - grey colors. The commercial uses of Tonalite and Rhyodacite are cemetery markers, creating artwork.