Know all about Phonolite and Banded iron formation properties here. All properties of rocks are important as they define the type of rock and its application. Phonolite belongs to Igneous Rocks while Banded iron formation belongs to Sedimentary Rocks.Texture of Phonolite is Granular whereas that of Banded iron formation is Banded, Trellis. Phonolite appears Banded and Foilated and Banded iron formation appears Layered, Banded, Veined and Shiny. The luster of Phonolite is greasy to dull while that of Banded iron formation is earthy. Phonolite is available in brown, buff, cream, green, grey, pink, white colors whereas Banded iron formation is available in red, reddish brown colors. The commercial uses of Phonolite are cemetery markers, creating artwork and that of Banded iron formation are as a touchstone, cemetery markers, creating artwork.