All about Coal and Gneiss Properties
Know all about Coal and Gneiss properties here. All properties of rocks are important as they define the type of rock and its application. Coal belongs to Sedimentary Rocks while Gneiss belongs to Metamorphic Rocks.Texture of Coal is Amorphous, Glassy whereas that of Gneiss is Banded, Foliated, Platy. Coal appears Veined or Pebbled and Gneiss appears Foliated. The luster of Coal is dull to vitreous to submetallic while that of Gneiss is dull. Coal is available in black, brown, dark brown, grey, light to dark grey colors whereas Gneiss is available in black, brown, pink, red, white 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 Gneiss are cemetery markers, jewelry, tombstones, used in aquariums.