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