Know all about Marl and Scoria properties here. All properties of rocks are important as they define the type of rock and its application. Marl belongs to Sedimentary Rocks while Scoria belongs to Igneous Rocks.Texture of Marl is Earthy whereas that of Scoria is Vesicular. Marl appears Rough and Dull and Scoria appears Glassy and Vesicular. The luster of Marl is dull while that of Scoria is subvitreous to dull. Marl is available in beige, brown, green, grey, white colors whereas Scoria is available in black, brown, dark grey to black, red colors. The commercial uses of Marl are creating artwork, soil conditioner and that of Scoria are as a traction material on snow-covered roads, creating artwork, high-temperature insulation, in gas barbecue grills.