certainty of origin : Cotype (used for additional information).
author(s) : Nefedov
date of publication : 1953
source : Bull.Soc.Russe Miner.(82) No4 p.311-317
formula : Ca2(Ca,Mg)(AsO4)2 2H2O =talmessite
comments about the origin : - envoi Nefedov a Guillemin 1961. - envoi Nefedov 1962
catalog number(s) : 18120,18121
This type specimen, kept in the Museum of Ecole des mines de Paris, has been indexed by Dr Guillemin.
(C) BRGM, ENSMP