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Resource
Resource 2018
Mineral Resource estimate prepared by RPA for the Rio Grande Project as of August 17, 2018 is summarized below:
| Class/ Oxidation | Tonnes (Mt) | Cu (%) | Au (g/t) | Ag (g/t) | Cu (Mlb) | Au (Koz) | Ag (Moz) |
|---|---|---|---|---|---|---|---|
| Indicated Total | 71.0 | 0.30 | 0.36 | 3.2 | 468.6 | 815 | 7.3 |
| Inferred Total | 41.0 | 0.23 | 0.28 | 2.8 | 208.4 | 375 | 3.6 |
Notes
- CIM (2014) definitions were followed for Mineral Resources.
- Mineral Resources are reported within a preliminary open pit resource shell.
- Mineral Resources are estimated at a net smelter return (NSR) cut-off grade of US$8.00/t for oxide, US$12.00/t for transition and US$7.50/t for sulphide. No sulphide material was captured in resource shell.
- Mineral Resources are estimated using a long-term gold price of US$1,400 per ounce, copper price of US$3.50 per pound.
- Bulk density is 2.41 t/m3 oxide 2.50 t/m3 oxide and 2.62 t/m3 sulphide.
- Numbers may not add due to rounding.