Know all about Banded iron formation and Tephrite 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 Tephrite belongs to Igneous Rocks.Texture of Banded iron formation is Banded, Trellis whereas that of Tephrite is Aphanitic to Porphyritic. Banded iron formation appears Layered, Banded, Veined and Shiny and Tephrite appears Vesicular. The luster of Banded iron formation is earthy while that of Tephrite is subvitreous to dull. Banded iron formation is available in red, reddish brown colors whereas Tephrite is available in black, brown, colourless, green, grey, white colors. The commercial uses of Banded iron formation are as a touchstone, cemetery markers, creating artwork and that of Tephrite are production of lime, soil conditioner.