(Grube Brenden, Waldshut, Schwarzwald, Baden-Württemberg, Deutschland)
Fluorite vein in granite, mined until 1974.
Located in the Mettma valley near Brenden, about 12 km north of Waldshut.
Ref.:
- S. Weiß: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
- K. Walenta: "Die Mineralien des Schwarzwaldes", Weise (Munich), 1992