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