Know all about Anthracite and Trondhjemite properties here. All properties of rocks are important as they define the type of rock and its application. Anthracite belongs to Metamorphic Rocks while Trondhjemite belongs to Igneous Rocks.Texture of Anthracite is Amorphous, Glassy whereas that of Trondhjemite is Phaneritic. Anthracite appears Veined or Pebbled and Trondhjemite appears Banded and Foilated. The luster of Anthracite is shiny while that of Trondhjemite is subvitreous to dull. Anthracite is available in black, brown, dark brown, grey, light to dark grey colors whereas Trondhjemite is available in black, brown, light to dark grey, white 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 Trondhjemite are cemetery markers, creating artwork.