As at 31 December 2022, the Company’s mineral resources (the total of measured, indicated and inferred resources) consisted of: 73.7186 million tonnes of copper, 3,117.39 tonnes of gold, 11.1833 million tonnes of zinc (lead), 14,611.80 tonnes of silver and 12.1521 million tonnes of LCE (lithium carbonate equivalent). The Company’s ore reserves (the total of proved and probable reserves) consisted of: 32.0944 million tonnes of copper, representing 43.54% of the total copper resources; 1,190.99 tonnes of gold, representing 38.20% of the total gold resources; 4.7993 million tonnes of zinc and lead, representing 42.91% of the total zinc and lead resources; 1,864.18 tonnes of silver, representing 12.76% of the total silver resources; and 4.2905 million tonnes of LCE reserves, representing 35.31% of the total LCE resources.
Mineral type | Unit | Reserves | Resources (including reserves) | Proportion of reserves to resources | Retained resources in 2021 | Percentage change | ||||||
Proved | Probable | Total | Measured | Indicated | Measured + Indicated | Inferred | Total | |||||
Copper | Mt (metal) | 5.9516 | 26.1428 | 32.0944 | 1024.42 | 4665.24 | 5689.66 | 1682.2 | 7371.86 | 44% | 6277.05 | 17% |
Gold | t (metal) | 276.51 | 898.86 | 1,190.99 | 472.11 | 1,581.99 | 2,054.10 | 1,063.29 | 3,117.39 | 38% | 2372.9 | 31% |
Independent gold | t (metal) | 205.91 | 690.22 | 896.13 | 364.31 | 1,153.05 | 1,517.36 | 869.21 | 2,386.57 | 38% | 2014.36 | 18% |
Gold associated with other metals | t (metal) | 70.60 | 224.26 | 294.86 | 107.80 | 428.95 | 536.74 | 194.07 | 730.82 | 40% | 358.54 | 104% |
Zinc | Mt (metal) | 1.7828 | 2.4123 | 4.1951 | 2.7146 | 3.922 | 6.6366 | 3.2494 | 9.8860 | 42% | 9.6182 | 3% |
Lead | Mt (metal) | 0.286 | 0.3182 | 0.6042 | 0.4333 | 0.5093 | 0.9426 | 0.3547 | 1.2973 | 47% | 1.2640 | 3% |
Silver (including associated) | t (metal) | 689.50 | 1,174.68 | 1,864.18 | 1,522.66 | 2,207.96 | 3,730.62 | 10,881.18 | 14,611.8 | 13% | 11,535.76 | 27% |
Lithium carbonate equivalent | LCE Mt | 1.573 | 2.7176 | 4.2905 | 2.6124 | 6.3327 | 8.945 | 3.2071 | 12.1521 | 35% | 7.6300 | 59% |
Molybdenum (including associated) | Mt (metal) | 0.6337 | 0.9108 | 1.5445 | 0.7292 | 1.0391 | 1.7683 | 1.2516 | 3.02 | 51% | 0.9153 | 230% |
Tungsten | WO3 thousand tonnes | 7 | 20.4 | 27.5 | 4 | 31.4 | 35.4 | 57.5 | 92.9 | 30% | 59.2 | 57% |
Tin | Thousand tonnes (metal) | 9.2 | 42.3 | 51.5 | 13.1 | 53.3 | 66.3 | 83.9 | 150.2 | 34% | 99.0 | 52% |
Iron | Mt (ore) | 27 | 92 | 119 | 39 | 215 | 254 | 223 | 478 | 25% | 179 | 167% |
Coal | Mt | 0.00 | 0.00 | 0.00 | 39 | 48 | 87 | 157 | 244 | 0% | 244 | 0% |
Platinum | t (metal) | 0.00 | 21.56 | 21.56 | 113.92 | 233.33 | 347.25 | 293.45 | 640.70 | 3% | 640.88 | 0% |
Palladium | t (metal) | 0.00 | 21.11 | 21.11 | 94.02 | 154.46 | 248.48 | 241.94 | 490.42 | 5% | 490.35 | 0% |
Notes: Retained resources/reserves of the current year are calculated based on equity method; all projects/mines are accounted for according to the Company’s actual shareholding ratio; resources include reserves.