Rastsvetaevite

Rastsveatevite is a rare mineral of the eudialyte group with the chemical formula. Its structure is modular. It is only the third member of the group after andrianovite and davinciite with essential potassium. Potassium and sodium enter both N4 and M2 sites. The mineral is named after Russian crystallographer Ramiza K. Rastsvetaeva.

Occurrence and association

Rastsvetaevite was originally found in hyperagpaitic pegmatite at Mt. Rasvumchorr, Khibiny massif, Kola Peninsula, Russia. Associated minerals are aegirine, nacaphite, nepheline, natrite, schcherbakovite, sodalite, villiaumite, and rasvumite.