# ferro-ferri-obertiite

> oxo amphibole, double chain inosilicate mineral

**Wikidata**: [Q19601089](https://www.wikidata.org/wiki/Q19601089)  
**Source**: https://4ort.xyz/entity/ferro-ferri-obertiite


## References

1. The IMA List of Minerals (July 2019)
2. The IMA List of Minerals
3. Nomenclature of the amphibole supergroup (2012)
4. Ferro-obertiite, NaNa₂(Fe²⁺₃Fe³⁺Ti)Si₈O₂₂O₂, a new mineral species of the amphibole group from ...
5. New minerals approved in 2009. Nomenclature modifications approved in 2009
6. The New IMA List of Minerals (September 2012)
7. The IMA List of Minerals (February 2013)
8. [Source](http://www.mindat.org/min-39635.html)
9. IMA–CNMNC approved mineral symbols