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