San Antonio Project PEA: $131M Capex Over a 14-Year Mine Life
Heliostar Metals Ltd.'s San Antonio Project in Baja California Sur, Mexico has a Preliminary Economic Assessment (PEA) outlining initial capital of $131M. The mine plan runs 14 years at about 80 koz/yr per year.
Heliostar Metals Ltd.'s San Antonio Project has reported Preliminary Economic Assessment (PEA) results for the gold project in Baja California Sur, Mexico. It reflects Heliostar Metals Ltd.'s (HSTR.V) latest disclosed economics for the asset.
Economics. Initial capital expenditure is estimated at $131M. All-in sustaining costs are pegged at 1063 $/oz. Economics are based on Upside case at $3,000/oz gold.
Production and mine plan. Life of mine is 14 years. Average annual production is approximately 80 koz/yr.
Resources and ownership. Mineral resources: M&I 1,741 koz gold. The company holds a 100% interest in the project.
These figures are extracted from Heliostar Metals Ltd.'s technical disclosures and reflect the most recent PEA 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.
Our Analysis
- Initial capex
- $131M
costlier than 45% of 133 projects we track
- Mine life
- 14yrs
- Study price assumption
- Upside case at $3,000/oz gold
- Spot gold today
- $4,379.80/oz
The 14-year mine life is the first thing to weigh, because it tells you this is a durable asset, not a quick-strike operation. That longevity supports a project that sits comfortably in the middle of the pack: its $131M initial capex is lower than 55% of the 133 gold projects we track, and the economics are in line with peers rather than an outlier. For an investor, that rank means the project is credible but not exceptional; the value is in the execution, not the headline.
The constraint that matters most is funding. At roughly 0.3x the company's US$414M market cap, the build cost is a large fraction of the entire equity value. That is the sharpest signal here: a small-cap cannot quietly finance this build, and the market will be watching for dilution, debt terms, or a partner. The company does have a diversified portfolio, one of 8 projects we track, which spreads risk but also spreads management attention and capital. The two-sided read on any NPV-to-market-cap gap is that the market may be skeptical on financing and dilution, or it may simply not have priced the asset yet; both are plausible.
This is a PEA, scoping-level, so the capital estimate carries a wide band and the resource may include inferred material. The study's upside case assumes $3,000/oz gold, well below today's $4,379.80/oz spot, which suggests the returns could be conservative if prices hold. Jurisdiction in Baja California Sur, Mexico, is generally mining-friendly but not without permitting friction. The single question that decides whether this works is whether the company can fund a $131M build without destroying shareholder value; everything else is secondary.
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.