Photo category: Rocks and Minerals specimen collection
- Photo taken Locality: Greece, Thrace, Drama
- Photo taken by: Trichas, A.
- Photo taken date: October 2011
Photo of a sample of Lignite collected in Paranesti, Greece in 2000. It is a sedimentary rock of organic origin, with consisting mainly of carbon, hydrogen, oxygen and nitrogen. It has fine crystals that give an amorphous view. It derives from the carbonization of plants mainly. The color is gray and brown-gray.