In millions, except per share items | Jun-30-23 | Jun-30-22 | Mar-31-22 | Sep-30-21 | Jun-30-21 | Mar-31-21 | Dec-31-20 | Sep-30-20 |
| 6-K | 6-K | 6-K | 6-K | 6-K | 6-K | 6-K | 6-K |
OPERATING REVENUES | | | | | | | | |
COST OF SALES | | | | | | | | |
Mining and processing | | | | 0.2 | 0.2 | | | |
|
Inventory net realizable value adjustment (note 6) | | | | | | | | |
Royalties (note 22) | | | | | | | | |
Amortization | | | | | | | | |
Cost of sales | | | | | | | | |
EXPENSES | | | | | | | | |
Exploration | | | | | | | | |
Corporate and administrative | | | | | | | | |
Share-based compensation (note 13) | | | | | | | | |
Impairment charge (note 14) | | | | | | | | |
Total expenses | | | | | | | | |
EARNINGS FROM OPERATIONS | | | | | | | | |
Finance expense | | | | | | | | |
Foreign exchange gain (loss) | | | | | | | | |
|
EARNINGS BEFORE INCOME TAXES | | | | | | | | |
INCOME TAXES (note 12) | | | | | | | | |
Current income tax expense | | | | | | | | |
Deferred income tax expense | | | | | | | | |
NET EARNINGS (LOSS) | | | | | | | | |
Items that may be subsequently reclassified to net earnings: | | | | | | | | |
Hedging gains (losses) for hedge of group of items with offsetting risk positions | | | | | | | | |
Items that will not be reclassified to net earnings: | | | | | | | | |
|
Total other comprehensive loss | | | | | | | | |
COMPREHENSIVE INCOME (LOSS) | | | | | | | | |
EARNINGS (LOSS) PER SHARE (note 13) | | | | | | | | |
- basic (usd per share) | | | | | | | | |
- diluted (usd per share) | | | | | | | | |
Weighted average number of common shares outstanding (000's) | | | | | | | | |
- basic (in shares) | | | | | | | | |
- diluted (in shares) | | | | | | | | |