sedimentary
Coal
Bituminous Coal
AI-generated identification · may be incorrectHardness of 1.5 to 2.5 on the Mohs scale, black or dark brown color, dull to sub-metallic luster, amorphous crystal structure, and a black streak.
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Physical properties
Hardness of 1.5 to 2.5 on the Mohs scale, black or dark brown color, dull to sub-metallic luster, amorphous crystal structure, and a black streak.
Formation & geological history
Formed from the accumulation and compaction of plant debris in ancient swamp environments over millions of years during the Carboniferous period.
Uses & applications
Primarily used for electricity generation, steel production, and industrial manufacturing.
Geological facts
Coal is a combustible sedimentary rock and serves as one of the world's primary fossil fuel energy sources.
Field identification & locations
Identified by its lightweight nature, black color, and dirty residue left when handled; commonly found in sedimentary basins worldwide.
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