sedimentary
Coal
Bituminous Coal / Carbonaceous Rock
AI-generated identification · may be incorrectHardness: 2.5 on Mohs scale. Color: Black to dark brown. Luster: Dull to sub-vitreous. Structure: Amorphous.
- Hardness
- 2
- Color
- Black to dark brown
- Luster
- Dull to sub-vitreous
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Physical properties
Hardness: 2.5 on Mohs scale. Color: Black to dark brown. Luster: Dull to sub-vitreous. Structure: Amorphous.
Formation & geological history
Formed from compressed plant debris in ancient swamp environments over millions of years.
Uses & applications
Primarily used for electricity generation, steel production, and industrial heating.
Geological facts
It is a combustible sedimentary rock composed mostly of carbon along with variable quantities of other elements.
Field identification & locations
Identified by its black color, relatively low weight, and dark streak; found worldwide in sedimentary basins.
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