Know all about Banded iron formation and Troctolite 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 Troctolite belongs to Igneous Rocks.Texture of Banded iron formation is Banded, Trellis whereas that of Troctolite is Phaneritic. Banded iron formation appears Layered, Banded, Veined and Shiny and Troctolite appears Veined and Shiny. The luster of Banded iron formation is earthy while that of Troctolite is not available. Banded iron formation is available in red, reddish brown colors whereas Troctolite is available in dark grey to black colors. The commercial uses of Banded iron formation are as a touchstone, cemetery markers, creating artwork and that of Troctolite are cemetery markers, commemorative tablets, laboratory bench tops, jewelry, sea defence, tombstones.