Know all about Coquina and Anthracite properties here. All properties of rocks are important as they define the type of rock and its application. Coquina belongs to Sedimentary Rocks while Anthracite belongs to Metamorphic Rocks.Texture of Coquina is Clastic whereas that of Anthracite is Amorphous, Glassy. Coquina appears Layered, Banded, Veined and Shiny and Anthracite appears Veined or Pebbled. The luster of Coquina is dull to vitreous to submetallic while that of Anthracite is shiny. Coquina is available in beige, buff, orange colors whereas Anthracite is available in black, brown, dark brown, grey, light to dark grey colors. The commercial uses of Coquina are creating artwork and that of Anthracite are alumina refineries, electricity generation, liquid fuel, manufacture of soap, solvents, dyes, plastics and fibres, paper industry.