author(s) : Hogarth, Chao, Plant and Steacy
date of publication : 1974
source : Can.Min.(12) p.293
formula : (Y,Ca)4 Si4O10(CO3)3 4H2O
comments about the origin : Etiquette Carleton University, Ech. Chao 1976
This type specimen, kept in the Museum of Ecole des mines de Paris, has been indexed by Dr Guillemin.
(C) BRGM, ENSMP