Know all about Banded iron formation and 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 Porphyry belongs to Igneous Rocks.Texture of Banded iron formation is Banded, Trellis whereas that of Porphyry is Porphyritic. Banded iron formation appears Layered, Banded, Veined and Shiny and Porphyry appears Dull. The luster of Banded iron formation is earthy while that of Porphyry is dull. Banded iron formation is available in red, reddish brown colors whereas Porphyry is available in black, brown, colourless, green, grey, red, rust, white colors. The commercial uses of Banded iron formation are as a touchstone, cemetery markers, creating artwork and that of Porphyry are creating artwork, gemstone, jewelry.