Know all about Slate and Alkali Feldspar Granite properties here. All properties of rocks are important as they define the type of rock and its application. Slate belongs to Metamorphic Rocks while Alkali Feldspar Granite belongs to Igneous Rocks.Texture of Slate is Foliated whereas that of Alkali Feldspar Granite is Phaneritic. Slate appears Dull and Alkali Feldspar Granite appears Veined or Pebbled. The luster of Slate is dull while that of Alkali Feldspar Granite is dull to grainy with sporadic parts pearly and vitreous. Slate is available in black, brown, buff, green, light to dark grey, purple, red, shades of blue colors whereas Alkali Feldspar Granite is available in black, grey, orange, pink, white colors. The commercial uses of Slate are blackboards, commemorative tablets, laboratory bench tops, standard material for the bed of billiard table, standard material for the beds of pool and snooker table, tombstones, used in aquariums, writing slates and that of Alkali Feldspar Granite are curling, gemstone, laboratory bench tops, tombstones.