# ellestadite mineral group

> hexagonal and pseudo-hexagonal sufato-silicates

**Wikidata**: [Q3777567](https://www.wikidata.org/wiki/Q3777567)  
**Source**: https://4ort.xyz/entity/ellestadite-mineral-group


## References

1. The substitution of SiO4- and SO4-groups for PO4-groups in the apatite structure; ellestadite, the end-member