lignitic

At a little distance from the focus of volcanic action, the Cretaceous coals of southwestern Colorado have been made bituminous and coking, while at the Placer Mountains the same stratum may be seen in its anthracitic and lignitic stages.

Scientific American Supplement, No. 362, December 9, 1882 Various

Geological Survey for what has generally been called "black lignite," a term that is objectionable because the coal is not lignitic in the sense of being distinctly woody, and because the use of the term seems to imply that this coal is little better than the brown, woody lignite of North Dakota, whereas many coals of this rank approach in excellence the lowest grade of bituminous coal.

The Economic Aspect of Geology 1915

United States Geological Survey give the area of bituminous and lignitic-bituminous coal at 13,000 square miles, and the lignite areas at from 25,000 to 50,000 square miles.

The Catholic Encyclopedia, Volume 10: Mass Music-Newman 1840-1916 1913

Oregon coals are lignitic, the largest bed uncovered being in the vicinity of Coos Bay.

The Catholic Encyclopedia, Volume 11: New Mexico-Philip 1840-1916 1913

These clays are usually dark in color owing to the vegetable matter which they contain; and, in some cases, they are highly lignitic.

North Carolina and its Resources. North Carolina. Board of Agriculture. 1896

"(e) The term 'solid fuels' shall mean all forms of anthracite, (2) bituminous, subbituminous, and lignitic coals; coke; and coal chemicals."

EXECUTIVE ORDER 10324 1952