Know all about Anthracite and Icelandite properties here. All properties of rocks are important as they define the type of rock and its application. Anthracite belongs to Metamorphic Rocks while Icelandite belongs to Igneous Rocks.Texture of Anthracite is Amorphous, Glassy whereas that of Icelandite is Aphanitic to Porphyritic. Anthracite appears Veined or Pebbled and Icelandite appears Dull and Soft. The luster of Anthracite is shiny while that of Icelandite is vitreous. Anthracite is available in black, brown, dark brown, grey, light to dark grey colors whereas Icelandite is available in bluish - grey, grey, pink, yellow colors. The commercial uses of Anthracite are alumina refineries, electricity generation, liquid fuel, manufacture of soap, solvents, dyes, plastics and fibres, paper industry and that of Icelandite are cemetery markers, creating artwork.