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