author(s) : Eugster
date of publication : 1967
source : Science (157) p.1177-1180
formula : NaSiO13(OH)3 3H2O
comments about the origin : 1) Eugster 1968 (auteur) <Catalog number : 24118>
. 2) Gude 1972 (cotype)
catalog number(s) : 24118
This type specimen, kept in the Museum of Ecole des mines de Paris, has been indexed by Dr Guillemin.
(C) BRGM, ENSMP