author(s) : Hisinger and Berzelius
date of publication : 1804
source : Gehlens J.(2) p. 397
formula : (Ce,Ca)9 (Mg,Fe)Si7(O,OH,F)28
comments about the origin : Coll.Adam No1038 etiquette Bertrand ("echantillon de Berzelius") obtenu par Bertrand en 1880
This type specimen, kept in the Museum of Ecole des mines de Paris, has been indexed by Dr Guillemin.
(C) BRGM, ENSMP