: MeSH: Coal

... > Ecological and Environmental Phenomena > Environment > Energy-Generating Resources > Fossil Fuels > Coal

Environment and Public Health > Environment > Energy-Generating Resources > Fossil Fuels > Coal

Complex Mixtures > Fossil Fuels > Coal

Coal

A natural fuel formed by partial decomposition of vegetable matter under certain environmental conditions. A coal transitional between PEAT and lignite. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed) Coal of relatively recent origin, intermediate between peat coal and bituminous coal. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed) A high-grade metamorphic coal having a semimetallic luster, high content of fixed carbon, and high density, and burning with a short blue flame and little smoke or odor. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed) A dark brown to black coal that is high in carbonaceous matter and has 15-50% volatile matter. Also known as soft coal. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)

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