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