Know all about Marl and Skarn properties here. All properties of rocks are important as they define the type of rock and its application. Marl belongs to Sedimentary Rocks while Skarn belongs to Metamorphic Rocks.Texture of Marl is Earthy whereas that of Skarn is Earthy, Mud-rich, Rough. Marl appears Rough and Dull and Skarn appears Dull. The luster of Marl is dull while that of Skarn is waxy and dull. Marl is available in beige, brown, green, grey, white colors whereas Skarn is available in black, brown, colourless, green, grey, white colors. The commercial uses of Marl are creating artwork, soil conditioner and that of Skarn are creating artwork, gemstone, jewelry, metallurgical flux, source of magnesia (mgo).