(Roggenbachgang, Nordfeld, Revier Schauinsland, Schauinsland, Freiburg im Breisgau, Schwarzwald, Baden-Württemberg, Deutschland)
A particularly rich vein, which yielded remarkable specimens in the past. Recent finds from the underground workings have also been reported.
Ref.:
S. Weiss: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990