Know all about Rhomb Porphyry and Argillite 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 Argillite belongs to Sedimentary Rocks.Texture of Rhomb Porphyry is Aphanitic to Porphyritic whereas that of Argillite is Clastic, Polished. Rhomb Porphyry appears Rough and Argillite appears Rough and Dull. The luster of Rhomb Porphyry is subvitreous to dull while that of Argillite is waxy and dull. Rhomb Porphyry is available in black, brown, colourless, green, grey, pink, white colors whereas Argillite is available in dark grey to black, pink, red, white 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 Argillite are fire resistant, used to manufracture paperweights and bookends.