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