certainty of origin : Cotype (used for additional information).
author(s) : Mincheva-Stefanova
date of publication : 1951
source : Izv.Geol.Inst.Bulg.Akad.Nauk. p.41-62
formula : Ti-amphibole
comments about the origin : Mincheva par Goni 1974
This type specimen, kept in the Museum of Ecole des mines de Paris, has been indexed by Dr Guillemin.
(C) BRGM, ENSMP