Know all about Lignite and Shale properties here. All properties of rocks are important as they define the type of rock and its application. Lignite and Shale belong to Sedimentary Rocks.Texture of Lignite is Amorphous, Glassy whereas that of Shale is Clastic, Splintery. Lignite appears Veined or Pebbled and Shale appears Muddy. The luster of Lignite is dull to vitreous to submetallic while that of Shale is dull. Lignite is available in black, brown, dark brown, grey, light to dark grey colors whereas Shale is available in black, brown, buff, green, grey, red, yellow colors. The commercial uses of Lignite are electricity generation and that of Shale are creating artwork, pottery.