14.—Brown Coal.
Occurs like Bituminous Coal, but usually brownish-black with less lustre, and often showing a woody or slaty structure; powder always brown; contains fossil plants; gravity between 1.2 and 1.5.
Value.—Inferior to No. 10. Makes no coke. Can be used in the manufacture of alum.
Localities.—Found in thin veins or elliptical masses, never in extensive layers like Pennsylvania coal. Near Richmond, Va.; Deep River, N. C.; Michigan, Missouri, Texas; Evanston, Utah; Coal Creek and Bellmonte, Col.; Boreman, Dearborn River and Greenhorn Gulch, Mont.