sedimentary
Coal
Combustible Sedimentary Rock
AI-generated identification · may be incorrectHardness varies from 1 to 3 on the Mohs scale. Color ranges from dark brown to jet black with a dull to shiny luster.
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Physical properties
Hardness varies from 1 to 3 on the Mohs scale. Color ranges from dark brown to jet black with a dull to shiny luster.
Formation & geological history
Formed from compressed plant remains in wetland environments over millions of years during the Carboniferous period and later.
Uses & applications
Primarily used for electricity generation, industrial steel production, and historical heating.
Geological facts
Coal deposits store ancient carbon from prehistoric swamp forests, playing a massive role in the global industrial revolution.
Field identification & locations
Identified by its relatively low weight, dark streak, and black coloration; commonly found in sedimentary basins worldwide.
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