Know all about Coal and Amphibolite properties here. All properties of rocks are important as they define the type of rock and its application. Coal belongs to Sedimentary Rocks while Amphibolite belongs to Metamorphic Rocks.Texture of Coal is Amorphous, Glassy whereas that of Amphibolite is Banded, Foliated, Massive. Coal appears Veined or Pebbled and Amphibolite appears Foliated. The luster of Coal is dull to vitreous to submetallic while that of Amphibolite is vitreous to dull. Coal is available in black, brown, dark brown, grey, light to dark grey colors whereas Amphibolite is available in black, brown, green, grey colors. The commercial uses of Coal are alumina refineries, electricity generation, liquid fuel, manufacture of soap, solvents, dyes, plastics and fibres, paper industry and that of Amphibolite are cemetery markers, commemorative tablets, creating artwork.