certainty of origin : Holotype.
author(s) : Herpin and Pierrot
date of publication : 1963
source : Bull.Soc.Fr.Min.Crist.(86) p.368-372
formula : CaH(AsO4)
comments about the origin : materiel these Pierrot Type I,II,IV. Type III : coll. Adam No4073 obtenu par Bertrand 1873 ("wapplerite")
This type specimen, kept in the Museum of Ecole des mines de Paris, has been indexed by Dr Guillemin.
(C) BRGM, ENSMP