author(s) : Pattiaratchi, Saari and Sahama
date of publication : 1967
source : Min.Mag. (36) p.1-4
formula : (Ba,K)(Fe,Mg)3 (Si,Al,Fe)4 O10(O,OH)2
comments about the origin : Sahama, 1968
This type specimen, kept in the Museum of Ecole des mines de Paris, has been indexed by Dr Guillemin.
(C) BRGM, ENSMP