author(s) : Menshikov, Denisov, Uspenskaya and Lipatova
date of publication : 1973
source : Dokl.Akad.(213) p.429
formula : (Na,K,Ca)4 (Be,Al)2 Si6O16 4H2O
comments about the origin : coll. Khomyakov ech. Stepanov I.M.G.R.E.(Moscou) 1979
This type specimen, kept in the Museum of Ecole des mines de Paris, has been indexed by Dr Guillemin.
(C) BRGM, ENSMP