Know all about Banded iron formation and Chalk properties here. All properties of rocks are important as they define the type of rock and its application. Banded iron formation and Chalk belong to Sedimentary Rocks.Texture of Banded iron formation is Banded, Trellis whereas that of Chalk is Clastic or Non-Clastic. Banded iron formation appears Layered, Banded, Veined and Shiny and Chalk appears Soft. The luster of Banded iron formation is earthy while that of Chalk is dull. Banded iron formation is available in red, reddish brown colors whereas Chalk is available in grey, white, yellow colors. The commercial uses of Banded iron formation are as a touchstone, cemetery markers, creating artwork and that of Chalk are alumina refineries, creating artwork, drawing on blackboards, gymnasts, athletes and mountain climbers use for grip, in aquifers, paper industry, production of lime, raw material for manufacture of quicklime, slaked lime, soil conditioner, whiting, whiting material in toothpaste, paint and paper.