The playbook — zinc · October 29, 2026
Emerita's IBW study lands: US$776M NPV, 21-year mine life
A maiden pre-feasibility study puts hard numbers on a polymetallic deposit in Spain's pyrite belt — and two-thirds of the revenue rides on a product with no spot price.
Emerita Resources put a price tag on its flagship on October 29. The company’s maiden pre-feasibility study — a mid-stage economic blueprint, one notch below the final engineering report — on its Iberian Belt West project in southern Spain landed with an after-tax net present value of US$776 million (the project’s worth in today’s dollars, discounted at 8% a year), a 23.51% internal rate of return (the annual yield the project throws off), and a 21-year mine life. Trading was halted the day it dropped. Behind the numbers sits a Probable Reserve of 23.4 million tonnes grading 2.30% zinc, 1.13% lead, 0.45% copper, 53 grams of silver and 1.07 grams of gold per tonne — a genuinely polymetallic mix in the Iberian Pyrite Belt, a district that has produced metal for centuries.
This is an economic study, not a drill hit, so there are no fresh intercepts to weigh. What matters is the shape of the business. The maiden reserve rests on 352 drill holes; the underlying resource grew 37% in Indicated tonnage and 46% in Inferred tonnage since the 2025 MRE count. SLR Consulting — with qualified geologists who know this belt — prepared the study. One oddity drives everything: roughly 66% of projected revenue comes from a pyrite concentrate carrying precious metals, and pyrite is not traded on any exchange. Its assumed price of US$215 to 274 a tonne comes from a market study of negotiated offtake terms, not a screen you can check. The stock has not rewarded the work — EMO fell 7.8% over three months while the base-metals peer index slipped just 1.7%, a six-point gap that looks company-specific rather than sector weather. 2026 brought heavy boardroom turnover: the CEO, CFO and board chair all departed within the year, triggering a governance review flagged at the August AGM.
What to watch: the Unified Environmental Authorization (AAU), the permit that unlocks construction, is expected in 2027 — the company says — after public consultation closed in July 2026. Optimization studies on mine sequence, added resources, satellite deposits and metallurgy are promised, with no timing stated. Honest caveats run deep. The entire reserve is Probable — zero Proven — and Inferred material was treated as waste. Two of the three deposits, La Infanta and El Cura, carry 16–27% unplanned dilution from narrow, complex geometry; only La Romanera, at 87% of reserve tonnes, truly drives the economics. Initial capital is US$567 million, US$858 million for the full project, with no disclosed construction financing plan. And that US$1,019 million upside case uses higher metal prices while holding pyrite flat — an illustration, not the base case.