Lignite: Mineral information, data and localities.

A consolidated, dull, soft brown to black coal with visible plant fragments set in a finer grained matrix. 60-75% carbon content dry ash free, 46-63%

Vitrain: Mineral information, data and localities.

Oligocene vertebrate locality of Monteviale, Veneto, northern Italy. A

Energies, Free Full-Text

The locality of the organic rich layers (arrow) above the lignite seam

e-Rocks Mineral Auctions

Lignite

Big data points humanity to new minerals, new deposits (Update)

Minerals - Colorado Geological Survey

Minerals - Colorado Geological Survey

Botryogen: Mineral information, data and localities.