Know all about Scoria and Lignite properties here. All properties of rocks are important as they define the type of rock and its application. Scoria belongs to Igneous Rocks while Lignite belongs to Sedimentary Rocks.Texture of Scoria is Vesicular whereas that of Lignite is Amorphous, Glassy. Scoria appears Glassy and Vesicular and Lignite appears Veined or Pebbled. The luster of Scoria is subvitreous to dull while that of Lignite is dull to vitreous to submetallic. Scoria is available in black, brown, dark grey to black, red colors whereas Lignite is available in black, brown, dark brown, grey, light to dark grey colors. The commercial uses of Scoria are as a traction material on snow-covered roads, creating artwork, high-temperature insulation, in gas barbecue grills and that of Lignite are electricity generation.