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