Know all about Rhomb Porphyry and Phyllite 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 Phyllite belongs to Metamorphic Rocks.Texture of Rhomb Porphyry is Aphanitic to Porphyritic whereas that of Phyllite is Phyllitic Sheen, Slaty. Rhomb Porphyry appears Rough and Phyllite appears Crinkled or Wavy. The luster of Rhomb Porphyry is subvitreous to dull while that of Phyllite is phyllitic. Rhomb Porphyry is available in black, brown, colourless, green, grey, pink, white colors whereas Phyllite is available in black to grey, light greenish grey 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 Phyllite are cemetery markers, commemorative tablets, creating artwork, writing slates.