| Classification | Tonnage (000 tonnes) | Grade (gpt Au) | Au Contained (000 ounces) |
|---|---|---|---|
| Reserves | |||
| Proven, Santo Antônio Vein | 223 | 9.68 | 69.4 |
| Proven, Matinha Vein | - | - | - |
| Total Proven | 223 | 9.68 | 69.4 |
| Probable, Santo Antônio Vein | 1,155 | 9.76 | 362.3 |
| Probable, Matinha Vein | 93 | 9.20 | 27.5 |
| Total Probable | 1,248 | 9.72 | 389.8 |
| Total Proven & Probable | 1,471 | 9.71 | 459.2 |
| Resources | |||
| Measured, Santo Antônio Vein | 333 | 9.57 | 102.3 |
| Measured, Matinha Vein | - | - | - |
| Measured, Brás & Buracão Vein | - | - | - |
| Total Measured | 333 | 9.57 | 102.3 |
| Indicated, Santo Antônio Vein | 1,222 | 11.57 | 454.6 |
| Indicated, Matinha Vein | 130 | 9.59 | 40.1 |
| Indicated, Brás & Buracão Vein | 7 | 3.36 | 0.7 |
| Total Indicated | 1,359 | 11.34 | 495.4 |
| Total Measured & Indicated | 1,691 | 10.99 | 597.8 |
| Inferred, Santo Antônio Vein | 259 | 13.49 | 112.2 |
| Inferred, Matinha Vein | 216 | 11.54 | 80.3 |
| Inferred, Brás & Buracão Vein | 157 | 4.71 | 23.8 |
| Total Inferred | 632 | 10.64 | 216.2 |
Mineral Reserves Notes:
- Effective Date of June 30, 2024.
- Mineral reserves included within stated mineral resources. All figures have been rounded to the relative accuracy of the estimates. Summed amounts may not add due to rounding.
- The 2024 mineral reserve estimates were prepared in accordance with the CIM Standards and the CIM Guidelines, using geostatistical and/or classical methods, plus economic and mining parameters appropriate for the deposit. Mineral reserves are the economic portion of the measured and indicated mineral resources. Mineral reserve estimates include operational dilution of 17.4% plus planned dilution of approximately 8.5% within each stope for room- and-pillar mining areas and operational dilution of 3.2% plus planned dilution of 21.2% for cut-and-fill mining areas. Mining recovery of 92.5% and 94.7% assumed for room-and-pillar and cut-and-fill areas, respectively. Practical mining shapes (wireframes) were designed using geological wireframes / mineral resource block models as a guide.
- Mineral reserve estimates were prepared under the supervision of and verified by Mr. Cid Gonçalves Monteiro Filho, SME RM (04317974), MAIG (No. 8444), FAusIMM (No. 329148) and Resource Manager of the Company who is a Qualified Person as such term is defined under NI 43-101.
Mineral Resources Notes:
- Effective Date of June 30, 2024.
- Presented mineral resources inclusive of mineral reserves. Indicated mineral resource totals are undiluted. All figures have been rounded to the relative accuracy of the estimates. Summed amounts may not add due to rounding.
- Mineral resources are estimated using ordinary kriging within 10 meter by 10 meter by 2 meter block size, with a minimum sub- block size of 1.0 meter by 1.0 meter by 0.5 meter.
- Mineral resource are constrained using a minimum stope dimension of 2.0 meters by 2.0 meters by 1.5 meters, a cut-off of 1.20 gpt based on underground mining and processing costs of US$72 per tonne and a gold price of US$1,900 per ounce.
- The Mineral Resource estimates were prepared in accordance with the Canadian Institute of Mining, Metallurgy and Petroleum (“CIM”) Definition Standards for Mineral Resources and Mineral Reserves, adopted by the CIM Council on May 10, 2014 (the “CIM Standards”) and the CIM Estimation for Mineral Resources and Mineral Reserves Best Practice Guidelines, adopted by CIM Council on November 29, 2019 (the “CIM Guidelines”), using geostatistical and/or classical methods, plus economic and mining parameters appropriate to the deposit.
- Mineral resource estimates were prepared under the supervision of and verified by Mr. Cid Gonçalves Monteiro Filho, SME RM (04317974), MAIG (No. 8444), FAusIMM (No. 329148) and Resource Manager of the Company who is a Qualified Person as such term is defined under NI 43-101.
Mineral resources which are not mineral reserves do not have demonstrated economic viability.