# Sapropel

> dark-coloured sediments that are rich in organic matter

**Wikidata**: [Q1431405](https://www.wikidata.org/wiki/Q1431405)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Sapropel)  
**Source**: https://4ort.xyz/entity/sapropel


## References

1. Integrated Authority File
2. Freebase Data Dumps. 2013
3. National Library of Israel Names and Subjects Authority File
4. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)