Know all about Phyllite and Rhomb Porphyry properties here. All properties of rocks are important as they define the type of rock and its application. Phyllite belongs to Metamorphic Rocks while Rhomb Porphyry belongs to Igneous Rocks.Texture of Phyllite is Phyllitic Sheen, Slaty whereas that of Rhomb Porphyry is Aphanitic to Porphyritic. Phyllite appears Crinkled or Wavy and Rhomb Porphyry appears Rough. The luster of Phyllite is phyllitic while that of Rhomb Porphyry is subvitreous to dull. Phyllite is available in black to grey, light greenish grey colors whereas Rhomb Porphyry is available in black, brown, colourless, green, grey, pink, white colors. The commercial uses of Phyllite are cemetery markers, commemorative tablets, creating artwork, writing slates 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).