Know all about Alkali Feldspar Granite and Porphyry properties here. All properties of rocks are important as they define the type of rock and its application. Alkali Feldspar Granite and Porphyry belong to Igneous Rocks.Texture of Alkali Feldspar Granite is Phaneritic whereas that of Porphyry is Porphyritic. Alkali Feldspar Granite appears Veined or Pebbled and Porphyry appears Dull. The luster of Alkali Feldspar Granite is dull to grainy with sporadic parts pearly and vitreous while that of Porphyry is dull. Alkali Feldspar Granite is available in black, grey, orange, pink, white colors whereas Porphyry is available in black, brown, colourless, green, grey, red, rust, white colors. The commercial uses of Alkali Feldspar Granite are curling, gemstone, laboratory bench tops, tombstones and that of Porphyry are creating artwork, gemstone, jewelry.