Know all about Lignite and Pumice properties here. All properties of rocks are important as they define the type of rock and its application. Lignite belongs to Sedimentary Rocks while Pumice belongs to Igneous Rocks.Texture of Lignite is Amorphous, Glassy whereas that of Pumice is Vesicular. Lignite appears Veined or Pebbled and Pumice appears Vesicular. The luster of Lignite is dull to vitreous to submetallic while that of Pumice is earthy. Lignite is available in black, brown, dark brown, grey, light to dark grey colors whereas Pumice is available in beige, colourless, grey, light green, light grey, pink, white, yellow- grey colors. The commercial uses of Lignite are electricity generation and that of Pumice are as a traction material on snow-covered roads, as an abrasive in pencil erasers, fine abrasive used for polishing, manufacture of soap, solvents, dyes, plastics and fibres, used in aquariums.