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