Know all about Marl and Banded iron formation properties here. All properties of rocks are important as they define the type of rock and its application. Marl and Banded iron formation belong to Sedimentary Rocks.Texture of Marl is Earthy whereas that of Banded iron formation is Banded, Trellis. Marl appears Rough and Dull and Banded iron formation appears Layered, Banded, Veined and Shiny. The luster of Marl is dull while that of Banded iron formation is earthy. Marl is available in beige, brown, green, grey, white colors whereas Banded iron formation is available in red, reddish brown colors. The commercial uses of Marl are creating artwork, soil conditioner and that of Banded iron formation are as a touchstone, cemetery markers, creating artwork.