certainty of origin : Holotype.
author(s) : Gaudefroy and Permingeat
date of publication : 1965
source : Bull.Soc.Fr.Min.Crist.(88) p.254-262
formula : Ca3Mn(SO4,CO3)2 (OH)6 12H2O
comments about the origin : Permingeat 1970 (holotype)
This type specimen, kept in the Museum of Ecole des mines de Paris, has been indexed by Dr Guillemin.
(C) BRGM, ENSMP