Know all about Lignite and Arkose properties here. All properties of rocks are important as they define the type of rock and its application. Lignite and Arkose belong to Sedimentary Rocks.Texture of Lignite is Amorphous, Glassy whereas that of Arkose is Clastic. Lignite appears Veined or Pebbled and Arkose appears Rough and Dull. The luster of Lignite is dull to vitreous to submetallic while that of Arkose is dull. Lignite is available in black, brown, dark brown, grey, light to dark grey colors whereas Arkose is available in reddish brown colors. The commercial uses of Lignite are electricity generation and that of Arkose are in aquifers, soil conditioner, source of magnesia (mgo), tombstones.