Know all about Banded iron formation and Tonalite 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 Tonalite belongs to Igneous Rocks.Texture of Banded iron formation is Banded, Trellis whereas that of Tonalite is Phaneritic. Banded iron formation appears Layered, Banded, Veined and Shiny and Tonalite appears Banded and Foilated. The luster of Banded iron formation is earthy while that of Tonalite is subvitreous to dull. Banded iron formation is available in red, reddish brown colors whereas Tonalite is available in black, brown, light to dark grey, white colors. The commercial uses of Banded iron formation and Tonalite are as a touchstone, cemetery markers, creating artwork.