# oil shale

> organic-rich fine-grained sedimentary rock containing kerogen

**Wikidata**: [Q221378](https://www.wikidata.org/wiki/Q221378)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Oil_shale)  
**Source**: https://4ort.xyz/entity/oil-shale


## References

1. [Source](https://github.com/JohnMarkOckerbloom/ftl/blob/master/data/wikimap)
2. Integrated Authority File
3. YSO-Wikidata mapping project
4. [Environment Ontology](https://raw.githubusercontent.com/INCATools/environments2wikidata/master/matches/curated-high-confidence-envo.tsv)
5. Quora
6. National Library of Israel
7. KBpedia
8. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)