Know all about Picrite and Alkali Feldspar Granite properties here. All properties of rocks are important as they define the type of rock and its application. Picrite and Alkali Feldspar Granite belong to Igneous Rocks.Texture of Picrite is Earthy, Rough whereas that of Alkali Feldspar Granite is Phaneritic. Picrite appears Rough and Shiny and Alkali Feldspar Granite appears Veined or Pebbled. The luster of Picrite is subvitreous to dull while that of Alkali Feldspar Granite is dull to grainy with sporadic parts pearly and vitreous. Picrite is available in black, brown, colourless, green, grey, pink, white, yellow colors whereas Alkali Feldspar Granite is available in black, grey, orange, pink, white colors. The commercial uses of Picrite are as a feed additive for livestock, as armour rock for sea walls, metallurgical flux, pottery, source of magnesia (mgo) and that of Alkali Feldspar Granite are curling, gemstone, laboratory bench tops, tombstones.