File:Bituminous_Coal.JPG · Wikimedia Commons · See Wikimedia Commons
AI overview
Coal is a dark, combustible rock formed from ancient plants that decayed into peat and were transformed by heat and pressure over millions of years, composed mainly of carbon along with hydrogen, sulfur, oxygen, and nitrogen. It matters because it is a fossil fuel that has historically been a major energy source, though vast deposits from prehistoric tropical wetlands took millions of years to form and are now being consumed much more rapidly than they were created.
AI-generated from the Wikipedia summary — may contain errors.
Key facts
- Rock.name
- Coal
- Rock.type
- Sedimentary
- Rock.image
- Bituminous Coal.JPG
- Rock.image_caption
- Bituminous coal, the most common coal grade
- Rock.image_size
- 258px
- Rock.composition
- carbon
via Wikipedia infobox
Research
44,374 papersvia PubMed
Wikidata facts
- Image
- Coal (Anthracite).JPG
Show 4 more facts
- Commons category
- Coal