Know all about Taconite and Rhomb Porphyry properties here. All properties of rocks are important as they define the type of rock and its application. Taconite belongs to Sedimentary Rocks while Rhomb Porphyry belongs to Igneous Rocks.Texture of Taconite is Banded, Trellis whereas that of Rhomb Porphyry is Aphanitic to Porphyritic. Taconite appears Layered, Banded, Veined and Shiny and Rhomb Porphyry appears Rough. The luster of Taconite is earthy while that of Rhomb Porphyry is subvitreous to dull. Taconite is available in red, reddish brown colors whereas Rhomb Porphyry is available in black, brown, colourless, green, grey, pink, white colors. The commercial uses of Taconite are as a touchstone, cemetery markers, creating artwork and that of Rhomb Porphyry are an oil and gas reservoir, as a feed additive for livestock, metallurgical flux, soil conditioner, source of magnesia (mgo).