Ellestadite

ellestadite

fluorellestadite

hydroxylellestadite

chlorellestadite

Images

Ellestadite originally was an approved mineral species, but then it was divided into two species, fluorellestadite: Ca5(SiO4)1.5(SO4)1.5F and hydroxyellestadite: Ca5(SiO4)1.5(SO4)1.5OH.
Chlorellestadite: Ca5(SiO4)1.5(SO4)1.5Cl was added later.

All are nesosilicates (insular SiO4 groups) and members of the ellestadite group, apatite supergroup.

Back to Minerals