certainty of origin : Holotype.
author(s) : Pierrot
date of publication : 1964
source : Bull.Soc.Fr.Min.Crist.(87) p.169
formula : Ca3(AsO4)2 10H2O
comments about the origin : Pierrot 1965
This type specimen, kept in the Museum of Ecole des mines de Paris, has been indexed by Dr Guillemin.
(C) BRGM, ENSMP