author(s) : Hiemstra and De Waal
date of publication : 1968
source : Nat.Inst.Met.(South Africa) Res.Rept.(352) p.1
formula : (Ni,Mg)3 Si4O10(OH)2
comments about the origin : Nat.Inst.Met.Johannesburg 1971
This type specimen, kept in the Museum of Ecole des mines de Paris, has been indexed by Dr Guillemin.
(C) BRGM, ENSMP