Stibnite Gold Project (Perpetua Resources) - regional context Production Update: $2.60B Capex Over a 15-Year Mine Life
Legacy Gold Mines Inc.'s Stibnite Gold Project (Perpetua Resources) - regional context in Idaho, USA; ~57 miles (92km) from Baner has a production guidance outlining initial capital of $2.60B. The mine plan runs 15 years at about 463000 oz Au/year (Years 1-4); 296,000 oz Au/year over 15-year mine life per year.
Legacy Gold Mines Inc.'s Stibnite Gold Project (Perpetua Resources) - regional context has reported production guidance results for the gold project in Idaho, USA; ~57 miles (92km) from Baner. It reflects Legacy Gold Mines Inc.'s (LEGY.V) latest disclosed economics for the asset.
Economics. Initial capital expenditure is estimated at $2.60B.
Production and mine plan. The project envisions an open-pit operation. Life of mine is 15 years. Average annual production is approximately 463000 oz Au/year (Years 1-4); 296,000 oz Au/year over 15-year mine life.
These figures are extracted from Legacy Gold Mines Inc.'s technical disclosures and reflect the most recent Production Update on file. Compare this project against other developers and producers in our project economics database, and always verify the numbers against the original technical report before making any investment decision.
Reserves & Resources
| Category | Tonnage | Grade | Contained |
|---|---|---|---|
| Reserves | — | 1.43 g/t | ~4.8 Moz Au |
| Category | Tonnage | Grade | Contained |
|---|---|---|---|
| Indicated | — | 1.33 g/t | ~6.3 Moz Au |
Our Analysis
- Initial capex
- $2.60B
costlier than 99% of 139 projects we track
- Mine life
- 15yrs
- Spot gold today
- $4,529.90/oz
The financing question is the project. The build cost is roughly fifty times the company's entire market cap, a sum this micro-cap cannot quietly raise through a rights issue or a single streaming deal. The cheque has to come from a strategic partner, a sovereign fund, or a syndicate of banks willing to lend against a single, unproven asset in Idaho. For existing holders, that means severe dilution or a control sale; the economics that follow are only relevant if that funding gap is closed first. This is the only project the company tracks, so there is no other asset to pledge or sell to bridge the difference.
The numbers themselves are a supporting act. A 15-year mine life in a mining-friendly US jurisdiction is a solid base, but the study is operating-mine data, not a forward-looking feasibility document, so the confidence level is lower than the headline figures might suggest. The project sits in Idaho, a jurisdiction that generally de-risks permitting relative to higher-risk regions, though the scale of the build still invites scrutiny. With gold trading well above the levels implied by the project's planning, the commodity backdrop is supportive, but the return profile is secondary to the simple math of who writes the initial cheque.
The two-sided read on the valuation gap is stark. Either the market is ignoring a viable asset because the financing path is unclear, or it is correctly pricing the near-impossibility of a company this size delivering a build of this magnitude without massive dilution. The single question that decides this project is not the grade or the mine life, but whether a credible funding partner emerges before the equity is wiped out by the cost of capital. Until that partner appears, the headline return is theoretical.
Our take, benchmarked against the project economics in the Mining Stocks database. Figures are estimates drawn from company technical reports — not investment advice; always verify against the source filing.