Pyrolusite from
Canada | |
| Government of British Columbia, Ministry of Energy, Mines, and Petroleum. “MINFILE Record Summary 0921SW012.” 2006. 3 Sept. 2006. |
| personal correspondence with Giles Peatfield (see comments in description) |
Canada | |
| Government of British Columbia, Ministry of Energy, Mines, and Petroleum. “MINFILE Record Summary 0921SW012.” 2006. 3 Sept. 2006. |
| personal correspondence with Giles Peatfield (see comments in description) |