Heliostar Metals' Ana Paula gold-silver feasibility study is 34% complete, with an underground mine plan cutting surface disturbance 65% and first gold targeted before the end of 2028, backed by $43 million cash and no debt.
At a glance
- Heliostar's Ana Paula feasibility study is 34% complete, with mine, mill and tailings-facility workstreams each roughly a third finished and completion targeted for Q2 2027.
- An updated mineral resource model is nearing release, built on 122 drill holes totalling 35,121 metres, including 74 holes added since the November 2025 preliminary economic assessment cutoff.
- A new underground-only mine plan replaces the prior open-pit design and is expected to cut proposed surface disturbance by about 65%, a permit submission targeted for September or October 2026.
- Heliostar held US$43.0 million in cash and no debt as of June 30, 2026, and projects roughly US$150 million in after-tax cash flow over the next two years to help finance construction alongside project debt.
What happened
Heliostar Metals said its feasibility study for the Ana Paula gold-silver project in Guerrero, Mexico is now 34% complete and remains on track for completion in the second quarter of 2027, targeting a construction decision by mid-2027 and first gold before the end of 2028. The mine, mill and tailings-facility workstreams are each roughly a third complete. An updated mineral resource estimate is in its final stages, built on 122 drill holes totalling 35,121 metres -- 74 holes added since the project's November 6, 2025 preliminary economic assessment cutoff -- concentrated on the High Grade Panel and the still-open Expansion Zone. Metallurgical testing has confirmed the ore's amenability to flotation, BIOX and cyanide-in-leach (CIL) processing, supporting a finalized process flowsheet sized for 2,000 tonnes per day, up from 1,800 tpd in the earlier PEA. A newly designed underground-only mine plan, submitted for environmental permit under Mexico's MIA-R process, is expected to cut proposed surface disturbance by roughly 65% compared with the prior open-pit design. Heliostar held US$43.0 million in cash and no debt as of June 30, 2026, and forecasts about US$150 million in after-tax cash flow over the next two years to help fund construction. CEO Charles Funk called the feasibility study "the most significant new value creation activity within Heliostar today."
The details
The most consequential decision buried in this update isn't the drilling or the resource math -- it's the switch from an open-pit to an underground-only mine plan. Mexico's environmental permitting process for a new mine requires a Manifestación de Impacto Ambiental (MIA), and Heliostar is now pursuing the regional variant, MIA-R, built around a design that disturbs roughly 65% less surface area than the open-pit plan the project's preliminary economic assessment was built on. A smaller footprint typically means a faster, less contested permitting path in Mexico, where surface disturbance and water use are often the sharpest points of community and regulatory scrutiny. Trading pit economics for underground economics usually raises per-tonne mining costs, but Heliostar appears to be betting that a smoother permitting timeline and lower environmental liability are worth that trade -- a bet that will show up in the feasibility study's economics once the mine-plan workstream, currently about a third complete, is finished.
The resource picture is the other half of the story. Ana Paula's High Grade Panel now traces over roughly 300 metres of horizontal strike and 330 metres down-plunge, averaging 50-60 metres thick -- not a thin vein but a genuine bulk zone -- while the separate Expansion Zone extends some 200 metres down-plunge and remains open in multiple directions. Of the 122 total holes feeding the updated resource model, 74 have been drilled since the PEA's November 2025 cutoff, meaning more than half the drilling behind this update is new information the market hasn't fully digested yet. An open Expansion Zone matters because it signals the deposit hasn't been closed off at depth -- exactly the kind of geological detail that can extend mine life or support a larger plant before construction even begins.
The plant itself has already grown on paper, with planned throughput moving to 2,000 tonnes per day from 1,800 tpd in the PEA, and a comminution circuit sized for up to 2,500 tpd -- built-in headroom that suggests management expects the final resource to support more ore than the original study assumed. None of this locks in until the feasibility study itself is finished in Q2 2027, but the direction of every individual workstream -- a bigger, higher-grade resource, a smaller environmental footprint, and a plant sized with expansion room -- points the same way.
Financially, Heliostar is building its construction war chest from a position of strength rather than urgency. US$43.0 million in cash with zero debt, against a forecast US$150 million of after-tax cash flow over the next two years, gives the company real optionality on how much project debt it needs to raise versus how much it can self-fund -- an advisor relationship with Hannam & Partners is already in place to work the non-dilutive debt options. Placing firm orders for long-lead equipment like crushers, a ball mill and a transformer in the fourth quarter of 2026, well before the mid-2027 construction decision, is a signal that management is sequencing procurement to avoid the equipment-delivery delays that have stretched timelines at other junior gold developers in recent years.
Why it matters
Ana Paula is a reminder that new gold-silver supply doesn't show up overnight even when the metal is trading near record highs -- this project won't produce its first ounce until late 2028 at the earliest, three years after its PEA and roughly two years after this feasibility study concludes. For Indian gold buyers and investors watching bullion prices, the lag between a strong gold price and new mine supply actually reaching the market is exactly why price-elastic supply response takes years rather than months, keeping upward pressure on prices intact even when high prices should, in theory, eventually draw out more production.
Our read
Outlook: bullish. The update is a genuinely positive, on-schedule progress report from a debt-free developer -- a growing resource, a permitting-friendly mine-plan redesign, and strong cash flow forecasts all point the same direction -- though the effect is company-specific rather than a broader gold or silver market mover, and construction financing and permitting risk remain ahead.
What to watch
- Completion of the updated mineral resource estimate incorporating the 74 new drill holes
- MIA-R environmental permit submission, targeted for September or October 2026
- The internal mine plan due in Q4 2026 and firm equipment orders for long-lead items in the same quarter
- The mid-2027 construction decision and progress on non-dilutive project debt financing
For information only, not investment advice.
Gold price in India
metalscost.com India reference price as of 2026-10-14.
Detailed analysis
Timeline
- 2025-11-06: Cutoff date for Ana Paula's preliminary economic assessment (PEA), based on drilling completed up to that point.
- 2026-06-30: Heliostar reported US$43.0 million in cash and zero debt as of this date.
- 2026-09-21: Heliostar reported the Ana Paula feasibility study at 34% complete, with an underground mine plan and updated resource estimate nearing key milestones.
- 2027-06-30: Target completion date for the Ana Paula feasibility study (Q2 2027).
Supply Drivers
Ana Paula represents a potential new gold-silver supply source with first production targeted before the end of 2028, contingent on a mid-2027 construction decision and successful completion of the feasibility study now 34% complete.
Government Policies
Heliostar's shift to an underground-only mine plan is designed around Mexico's MIA-R environmental permitting process, cutting proposed surface disturbance by roughly 65% versus the earlier open-pit design to support a smoother permitting path, with submission targeted for September or October 2026.
Mining Production
An updated mineral resource estimate is in its final stages based on 122 drill holes totalling 35,121 metres, with the High Grade Panel tracing about 300 metres of strike and 330 metres down-plunge at 50-60 metres thickness, and the Expansion Zone extending roughly 200 metres down-plunge while remaining open.
What could lift prices
- The mineral resource is still growing -- 74 of 122 total drill holes were added since the PEA cutoff, and the Expansion Zone remains open in multiple directions, pointing to further resource growth potential ahead of the feasibility study's completion.
- US$43.0 million cash and zero debt, plus a forecast US$150 million in after-tax cash flow over two years, gives Heliostar real flexibility on construction financing rather than dependence on a single funding source.
- The underground mine plan's roughly 65% smaller surface footprint is designed to support a smoother environmental permitting path in Mexico.
What could weigh on prices
- The feasibility study is only 34% complete, with the construction decision still roughly nine months away and first gold not expected until late 2028 -- a long execution runway with permitting and financing risk still ahead.
- Switching from an open-pit to an underground mine plan typically raises per-tonne mining costs, a trade-off whose full economic impact won't be clear until the feasibility study concludes.
Country impact
| Country | Impact | Reason |
|---|---|---|
| Mexico | Medium | The Ana Paula project in Guerrero represents a significant potential new mining investment and future source of construction and operating jobs, moving through Mexico's environmental permitting process with a redesigned underground plan meant to reduce its footprint. |
Industry impact
| Industry | Effect | Reason |
|---|---|---|
| Mining | Positive | A debt-free, cash-funded junior developer advancing a growing high-grade resource toward a construction decision is a positive signal for the broader gold-silver development pipeline at a time of strong bullion prices. |
Who gains, who loses
- Heliostar Metals shareholders: A growing, high-grade resource combined with a debt-free balance sheet and a smaller-footprint mine plan reduces both the geological and financing risk typically associated with advancing a junior gold-silver project toward construction.
Other ways this could play out
- If the updated resource estimate confirms substantial growth from the 74 new drill holes and the Expansion Zone continues to expand, Ana Paula could support a larger, longer-life operation than the original PEA envisioned.
- If MIA-R permitting takes longer than the September-October 2026 submission target implies, or non-dilutive debt financing proves harder to secure than Heliostar's cash position suggests, the mid-2027 construction decision and 2028 first-gold target could slip.
Price risks
- A pullback in gold or silver prices before the mid-2027 construction decision could change project economics and financing terms
- Permitting delays under Mexico's MIA-R process, or a longer timeline to secure non-dilutive project debt, could push back the targeted late-2028 first-gold date
Historical comparison
- PEA mine plan (pre-November 2025): The original preliminary economic assessment envisioned an open-pit mine processing 1,800 tonnes per day; the current plan under feasibility study is underground-only, sized for 2,000 tpd with a comminution circuit rated up to 2,500 tpd.
Technical view
Price is trading below both its 20-period and 50-period moving averages, a bearish alignment.
Computed from metalscost.com's own stored price history.
Related
Mexico