# wad

> porous secondary manganese oxides, mainly

**Wikidata**: [Q2257471](https://www.wikidata.org/wiki/Q2257471)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Wad_(mineral))  
**Source**: https://4ort.xyz/entity/wad-q2257471


## References

1. Source
2. Freebase Data Dumps. 2013