Pyrolusite from selected localities.
Germany | |
| S. Weiß: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990 |
| F. Rutley: "Elements of Mineralogy", 12th Ed. (1900) |
Germany | |
| S. Weiß: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990 |
| F. Rutley: "Elements of Mineralogy", 12th Ed. (1900) |