Tags: Chemical Substance, Mineral.
Hauyne haüyne or hauynite was first described in 1807 from samples discovered in Vesuvian lavas in Monte Somma Italy and was named in 1807 by Brunn-Neergard for the French crystallographer René Just Haüy (1743–1822). It is a tectosilicate mineral with sulfate with endmember formula Na3Ca(Si3Al3)O12(SO4). As much as 5 wt % K2O may be present and also H2O and Cl. It is a feldspathoid and a member of the sodalite group.
