Know all about Porphyry and Arkose properties here. All properties of rocks are important as they define the type of rock and its application. Porphyry belongs to Igneous Rocks while Arkose belongs to Sedimentary Rocks.Texture of Porphyry is Porphyritic whereas that of Arkose is Clastic. Porphyry appears Dull and Arkose appears Rough and Dull. The luster of Porphyry and Arkose is dull. Porphyry is available in black, brown, colourless, green, grey, red, rust, white colors whereas Arkose is available in reddish brown colors. The commercial uses of Porphyry are creating artwork, gemstone, jewelry and that of Arkose are in aquifers, soil conditioner, source of magnesia (mgo), tombstones.