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