certainty of origin : Holotype.
author(s) : Johan and Maglione
date of publication : 1972
source : Bull.Soc.Fr.Min.Crist.(95) p.371-382
formula : NaHSi2O4(OH)2 2H2O
comments about the origin : Johan 1974
This type specimen, kept in the Museum of Ecole des mines de Paris, has been indexed by Dr Guillemin.
(C) BRGM, ENSMP