certainty of origin : Holotype.
author(s) : Guillemin
date of publication : 1955
source : C.R.Acad.Sci.(240) p.2331
formula : BaCu3(VO4)2 (OH)2
comments about the origin : etiquette these Guillemin No15262 obtenu par Von Philipsborn ("volborthite")
This type specimen, kept in the Museum of Ecole des mines de Paris, has been indexed by Dr Guillemin.
(C) BRGM, ENSMP