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