Know all about Aplite and Marl properties here. All properties of rocks are important as they define the type of rock and its application. Aplite belongs to Igneous Rocks while Marl belongs to Sedimentary Rocks.Texture of Aplite is Granular, Graphic whereas that of Marl is Earthy. Aplite appears Veined or Pebbled and Marl appears Rough and Dull. The luster of Aplite is dull to pearly to subvitreous while that of Marl is dull. Aplite is available in black, grey, orange, pink, white colors whereas Marl is available in beige, brown, green, grey, white colors. The commercial uses of Aplite are curling, gemstone, laboratory bench tops, small sculptures, tombstones and that of Marl are creating artwork, soil conditioner.