Know all about Gritstone and Banded iron formation properties here. All properties of rocks are important as they define the type of rock and its application. Gritstone and Banded iron formation belong to Sedimentary Rocks.Texture of Gritstone is Earthy whereas that of Banded iron formation is Banded, Trellis. Gritstone appears Layered and Foliated and Banded iron formation appears Layered, Banded, Veined and Shiny. The luster of Gritstone is dull while that of Banded iron formation is earthy. Gritstone is available in beige, black, brown, colourless, cream, dark brown, green, grey, light green, light to dark grey, pink, red, white, yellow colors whereas Banded iron formation is available in red, reddish brown colors. The commercial uses of Gritstone are an oil and gas reservoir, as a feed additive for livestock, gemstone, metallurgical flux, production of lime, soil conditioner, source of magnesia (mgo), tombstones and that of Banded iron formation are as a touchstone, cemetery markers, creating artwork.