Wiktionary
rastsvetaevite
n. (context mineralogy English) A trigonal-ditrigonal pyramidal pink mineral containing calcium, chlorine, hydrogen, iron, oxygen, potassium, silicon, sodium, and zirconium.
Wikipedia
Rastsvetaevite
Rastsveatevite is a rare mineral of the eudialyte group with the formula NaKCaFeZrSi[SiO][SiO](O,OH,HO)Cl. Its structure is modular. It is only the third member of the group after andrianovite and davinciite with essential (site-dominating) potassium. Potassium and sodium enter both N4 and M2 sites. The mineral is named after Russian crystallographer Ramiza K. Rastsvetaeva.