# concretion

> hard, compact mass of matter formed by the precipitation of mineral cement within the spaces between particles

**Wikidata**: [Q1093379](https://www.wikidata.org/wiki/Q1093379)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Concretion)  
**Source**: https://4ort.xyz/entity/concretion


## References

1. Freebase Data Dumps. 2013
2. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)