# quartzite

> hard, non-foliated metamorphic rock which was originally pure quartz sandstone

**Wikidata**: [Q237883](https://www.wikidata.org/wiki/Q237883)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Quartzite)  
**Source**: https://4ort.xyz/entity/quartzite


## References

1. [Source](https://www.geoberuf.de/index.php/derbdg-2/gestein-des-jahres.html?start=6)
2. Freebase Data Dumps. 2013
3. YSO-Wikidata mapping project
4. BabelNet
5. Quora
6. [archINFORM](https://www.archinform.net/service/wd_aistich.php)
7. National Library of Israel Names and Subjects Authority File
8. GF WordNet
9. [Source](https://cgi.vocabs.ga.gov.au/object?uri=http://resource.geosciml.org/classifier/cgi/lithology/quartzite)