Know all about Trachyandesite and Banded iron formation properties here. All properties of rocks are important as they define the type of rock and its application. Trachyandesite belongs to Igneous Rocks while Banded iron formation belongs to Sedimentary Rocks.Texture of Trachyandesite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular whereas that of Banded iron formation is Banded, Trellis. Trachyandesite appears Dull and Soft and Banded iron formation appears Layered, Banded, Veined and Shiny. The luster of Trachyandesite and Banded iron formation is earthy. Trachyandesite is available in black, brown, light to dark grey colors whereas Banded iron formation is available in red, reddish brown colors. The commercial uses of Trachyandesite are creating artwork, pottery and that of Banded iron formation are as a touchstone, cemetery markers, creating artwork.