Know all about Lignite and Tephrite properties here. All properties of rocks are important as they define the type of rock and its application. Lignite belongs to Sedimentary Rocks while Tephrite belongs to Igneous Rocks.Texture of Lignite is Amorphous, Glassy whereas that of Tephrite is Aphanitic to Porphyritic. Lignite appears Veined or Pebbled and Tephrite appears Vesicular. The luster of Lignite is dull to vitreous to submetallic while that of Tephrite is subvitreous to dull. Lignite is available in black, brown, dark brown, grey, light to dark grey colors whereas Tephrite is available in black, brown, colourless, green, grey, white colors. The commercial uses of Lignite are electricity generation and that of Tephrite are production of lime, soil conditioner.