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