Tourmaline from Cobalt-Gowganda region, Timiskaming District, Ontario, Canada
Canada | |
| the Canadian Mineralogist V 11 Part 1 1971 |
| Petruk (1971): The Silver-Arsenide Deposits of the Cobalt-Gowganda Region, Ontario. Can. Mineral. 11, 232-262 |
Canada | |
| the Canadian Mineralogist V 11 Part 1 1971 |
| Petruk (1971): The Silver-Arsenide Deposits of the Cobalt-Gowganda Region, Ontario. Can. Mineral. 11, 232-262 |