author(s) : Zambonini
date of publication : 1922
source : Rend. R.Accad.Lincei Cl.Sci.Fis., Roma.Ser.5 (31) sem.1 p.151
formula : 2(Mn5Al5AsO4Si5O20(OH)2 2H2O)
comments about the origin : Etiquette et envoi Palumbo, Roma (1966) "echantillon original"
catalog number(s) : 20555
This type specimen, kept in the Museum of Ecole des mines de Paris, has been indexed by Dr Guillemin.
(C) BRGM, ENSMP