Home / Explore / Minerals / Letnikovite-(Ce) Minerals Letnikovite-(Ce) letnikovite-(Ce) (Na◻)Ca2Ce2[Si7O17(OH)]F4(H2O)4 Letnikovite-(Ce), (Na )Ca2Ce2[Si7O17(OH)]F4(H2O)4, a new mineral from ... — via www.cambridge.org · Source Overview Letnikovite-(Ce) is a mineral species. It crystallises in the monoclinic system. Scientific references Letnikovite-(Ce) — Wikidata. https://www.wikidata.org/wiki/Q118215180 Link