Orthowalpurgite from selected localities.
Germany | |
| Slotta, C. (2004): Orthowalpurgin und Walpurgin von der Grube Alt St. Josef zu Wittichen, Schwarzwald. Lapis 29 (3), 19-20.; Markl, G., Slotta, C. (2011) Die Uranmineralien des Lagerstättenreviers Wittichen im mittleren Schwarzwald. Lapis 3/2011, 225-237. |
| Krause, W., Effenberger, H., and Brandstätter, F. (1995) Orthowalpurgite, (UO2)Bi4O4(AsO4)2·2H2O, a new mineral from the Black Forest, Germany. European Journal of Mineralogy: 7: 1313-1324.; The Mineralogical Record: 27: 465. |
Alt St Joseph Mine, Wittichen, Schenkenzell, Rottweil, Freiburg Region, Baden-Württemberg, Germany