certainty of origin : Holotype.
author(s) : Fontan, Orliac and Permingeat
date of publication : 1975
source : Bull.Soc.Fr.Min.Crist.(98) p.78-84
formula : MnHAsO4 H2O
comments about the origin : l'echantillon ayant servi a l'etude provient de la collection Bertrand (No809)
This type specimen, kept in the Museum of Ecole des mines de Paris, has been indexed by Dr Guillemin.
(C) BRGM, ENSMP