# desert varnish

> orange-yellow to black coating found on exposed rock surfaces in arid environments

**Wikidata**: [Q351043](https://www.wikidata.org/wiki/Q351043)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Desert_varnish)  
**Source**: https://4ort.xyz/entity/desert-varnish


## References

1. Freebase Data Dumps. 2013