In veinlets associated with alkai-carbonate metasomatism of alkalic massifs.
IMA Status:
Approved IMA 1982
Locality:
Found in drill core from the Vuonnemiok River Valley, and on Mts. Suoluaiv, Kukisvumchorr, Partomchorr, and Rest'yun, Khibiny massif, also in drill core from the Kovdor massif, Kola Pe
Link to MinDat.org Location Data.
Name Origin:
To honor Elsa Maksimilianovna Bonshtedt-Kupletskaya (1897-1974), Russian specialist in mineralogy of alkalic massifs.