Know all about Mudstone and Phonolite properties here. All properties of rocks are important as they define the type of rock and its application. Mudstone belongs to Sedimentary Rocks while Phonolite belongs to Igneous Rocks.Texture of Mudstone is Clastic whereas that of Phonolite is Granular. Mudstone appears Rough and Dull and Phonolite appears Banded and Foilated. The luster of Mudstone is dull while that of Phonolite is greasy to dull. Mudstone is available in black, blue, brown, green, grey, orange, red, white, yellow colors whereas Phonolite is available in brown, buff, cream, green, grey, pink, white colors. The commercial uses of Mudstone are creating artwork, pottery and that of Phonolite are cemetery markers, creating artwork.