certainty of origin : Holotype.
author(s) : Pierrot
date of publication : 1964
source : Bull.Soc.Fr.Min.Crist.(87) p.169
formula : Ca5H2(AsO4)4 4H2O
comments about the origin : Mission S.C.E.M. 1964
This type specimen, kept in the Museum of Ecole des mines de Paris, has been indexed by Dr Guillemin.
(C) BRGM, ENSMP