certainty of origin : Donated directly by the Author.
author(s) : Milton and Meyrowitz
date of publication : 1964
source : U.S.Geol.Survey Prof.Paper 501-B p.B66-B68
formula : Na3(Mg,Fe)Cl(CO3)2
comments about the origin : Milton 1974
This type specimen, kept in the Museum of Ecole des mines de Paris, has been indexed by Dr Guillemin.
(C) BRGM, ENSMP