author(s) : Bauer and Berman
date of publication : 1929
source : Am.Min.(14) p.150-153
formula : (Mn,Zn)7 (CO3)2 (OH)10
comments about the origin : Jago 1971
This type specimen, kept in the Museum of Ecole des mines de Paris, has been indexed by Dr Guillemin.
(C) BRGM, ENSMP