author(s) : Bechi
date of publication : 1864
source : C.R.Acad.Sci.(58) p.583-584
formula : (NH4)2 Mg(SO4)2 6H2O
comments about the origin : Palumbo, 1966 (type)
catalog number(s) : 17853
This type specimen, kept in the Museum of Ecole des mines de Paris, has been indexed by Dr Guillemin.
(C) BRGM, ENSMP