author(s) : Ungemach
date of publication : 1933
source : Bull.Soc.Fr.Min.Crist.(56) p.303
formula : NaFe(SO4)2 6H2O
comments about the origin : Museum National d'Histoire Naturelle, 1975
This type specimen, kept in the Museum of Ecole des mines de Paris, has been indexed by Dr Guillemin.
(C) BRGM, ENSMP