Know all about Banded iron formation and Rhomb Porphyry properties here. All properties of rocks are important as they define the type of rock and its application. Banded iron formation belongs to Sedimentary Rocks while Rhomb Porphyry belongs to Igneous Rocks.Texture of Banded iron formation is Banded, Trellis whereas that of Rhomb Porphyry is Aphanitic to Porphyritic. Banded iron formation appears Layered, Banded, Veined and Shiny and Rhomb Porphyry appears Rough. The luster of Banded iron formation is earthy while that of Rhomb Porphyry is subvitreous to dull. Banded iron formation is available in red, reddish brown colors whereas Rhomb Porphyry is available in black, brown, colourless, green, grey, pink, white colors. The commercial uses of Banded iron formation are as a touchstone, cemetery markers, creating artwork and that of Rhomb Porphyry are an oil and gas reservoir, as a feed additive for livestock, metallurgical flux, soil conditioner, source of magnesia (mgo).