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