certainty of origin : Donated directly by the Author.
author(s) : Vogl
date of publication : 1857
source : Gangverhaeltn. und Mineralreich. Joachimstal, Teplitz p.169
formula : walpurgite
comments about the origin : etiquette Saemann coll. Adam No3221 obtenu par Saemann 1865 ("l'etiquette etait de Vogl")
catalog number(s) : 18613
This type specimen, kept in the Museum of Ecole des mines de Paris, has been indexed by Dr Guillemin.
(C) BRGM, ENSMP