author(s) : Menshikov, Bussen, Goieko, Zabavnikova, Merkov and Khomyakov
date of publication : 1975
source : Zap.Vses.Min.Obsch.(104) p.322
formula : 4(Na7BaTi2NbSi4O17FPO4)
comments about the origin : Etiquette Musee de Mineralogie I.M.G.R.E. Khomyakov, 1979
This type specimen, kept in the Museum of Ecole des mines de Paris, has been indexed by Dr Guillemin.
(C) BRGM, ENSMP