brown coal

One end was still almost like wood, the middle part was a very soft brown coal, while the other end was true coal.

Lignite or brown coal may contain only 50 per cent of carbon.

Lignite or brown coal is of intermediate character between peat and coal proper.

Lignite or brown coal includes all varieties which are intermediate in properties between wood and coals of the older formations.

Finding no market for his brown coal, Philbrook decided to adopt the customs of the country and turn cattleman.