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