Pyrolusite from Umm Bugma (Um Bogma), Abu Zeneima (Abu Zenima), South Sinai Governorate, Egypt
Egypt | |
| Ibrahim, E. (2000) Sedimentary Origin of the Mn-Fe Ore of Um Bogma, Southwest Sinai: Geochemical and Paleomagnetic Evidence. Economic Geology 95:607-620 Manganese Reserves and Resources of the World and its Industrial |