Kuzmenkoite-Mn.12976 Formula: K1.63 Ba.03 Na.18 Ti3.4 Nb.34 Fe.4 Mn.56 Si8 O32.25 H13.17 Name: Kuzmenkoite-Mn Unit cell: 14.369 13.906 7.812 90.0 117.09 90.0 , V=1389.71 Space group: Cm (8)
Rastsvetaeva R K , Chukanov N V , Pekov I V , Crystallography Reports , 45 (2000) p.759-761, Refined crystal structure of kuzmenkoite, Locality: Lovozero massif, Kola Peninsula, Russia