author(s) : Wade and Prider
date of publication : 1938
source : Rep.Brit.Asoc.Adv.Sci.(Cambridge 1938) p.419
formula : K2CaZrSi4O12
comments about the origin : Prider 1975
This type specimen, kept in the Museum of Ecole des mines de Paris, has been indexed by Dr Guillemin.
(C) BRGM, ENSMP