Know all about Basalt and Alkali Feldspar Granite properties here. All properties of rocks are important as they define the type of rock and its application. Basalt and Alkali Feldspar Granite belong to Igneous Rocks.Texture of Basalt is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular whereas that of Alkali Feldspar Granite is Phaneritic. Basalt appears Dull and Soft and Alkali Feldspar Granite appears Veined or Pebbled. The luster of Basalt is not available while that of Alkali Feldspar Granite is dull to grainy with sporadic parts pearly and vitreous. Basalt is available in black, brown, light to dark grey colors whereas Alkali Feldspar Granite is available in black, grey, orange, pink, white colors. The commercial uses of Basalt are an oil and gas reservoir, commemorative tablets, creating artwork, used in aquariums and that of Alkali Feldspar Granite are curling, gemstone, laboratory bench tops, tombstones.