Know all about Oil shale and Aplite properties here. All properties of rocks are important as they define the type of rock and its application. Oil shale belongs to Sedimentary Rocks while Aplite belongs to Igneous Rocks.Texture of Oil shale is Splintery whereas that of Aplite is Granular, Graphic. Oil shale appears Muddy and Aplite appears Veined or Pebbled. The luster of Oil shale is dull while that of Aplite is dull to pearly to subvitreous. Oil shale is available in black, brown, buff, green, grey, red, yellow colors whereas Aplite is available in black, grey, orange, pink, white colors. The commercial uses of Oil shale are an oil and gas reservoir and that of Aplite are curling, gemstone, laboratory bench tops, small sculptures, tombstones.