Mogotes Metals Unlocks Two Copper-Gold Systems at Filo Sur with 20,000 meters Drilling Planned Through 2027

• Mogotes Metals reported two 2025–2026 season discoveries at its Filo Sur project: the high-grade Albor breccia and the Cruz del Sur gold-copper porphyry, both sitting on the Macho Muerto Fault Zone (MMFZ).
• The company closed a $15 million strategic investment from Rio Tinto on August 2026, giving the major a roughly 5% stake at a 50–70% share-price premium and a 15-month exclusivity period over project-level transactions at Filo Sur.
• Two new porphyry targets, Luz del Sol and Cuenca, were defined this season and are queued for first-pass drilling in 2026–2027, alongside a still-untested third target, Meseta.
• Mogotes plans up to 20,000 metres of drilling at Filo Sur in 2026–2027, more than triple this season's 6,208 metres, and funded by a roughly C$75 million treasury.
• Beyond Filo Sur, Mogotes holds option agreements over a Rio Tinto-optioned porphyry project in Montana and a multi-million-ounce gold-copper deposit in Kazakhstan, with drill results due from both within the next few months.

Mogotes Metals Inc. (TSXV:MOG) has spent the past year turning a largely undrilled stretch of Argentina and Chile's Vicuña district into a two-discovery project with a major backer at the table. In an interview with Crux Investor, President and CEO Allen Sabet laid out what the company found in its first full drilling season at Filo Sur, what a newly closed US$15 million strategic investment from Rio Tinto means in practice, and why the 2026–2027 drill programme is about to more than triple in size.

Filo Sur sits immediately south of Lundin Mining's Filo del Sol deposit, one of the largest copper-gold-silver discoveries of the past three decades, and along the same structural corridor as NGEx Minerals' Lunahuasi and Los Helados deposits. That neighbourhood has done a lot of the talking for junior explorers in the district. Mogotes is now attempting to back it up with drill results of its own.

Two Discoveries on One Fault Zone

The company's 2025–2026 season delivered 6,208 metres of drilling across Argentina and Chile and produced two discoveries, both sitting on the same structure: the Macho Muerto Fault Zone (MMFZ), a northwest-striking, trans-Andean fault that Sabet describes as the key plumbing system for metal-bearing fluids in the district.

At Albor, a strongly mineralised breccia at 0.98% copper equivalent (CuEq) from 108 metres depth, including 58 metres at 1.77% CuEq, records as the highest-grade intercept drilled at Filo Sur to date. Sabet said the multi-stage mineralisation seen in the hole, along with the grade uplift toward its base, mirrors characteristics associated with the high grades at Filo del Sol next door. Potassic alteration intensifies toward the bottom of the hole, next to an induced-polarisation (IP) chargeability anomaly the company reads as a deeper porphyry target still to be tested.

At Cruz del Sur, roughly four kilometres south, drill holes intersected 308 metres at 0.46% CuEq and 334 metres at 0.45% CuEq, and returned a near-surface gold-zinc breccia sitting above a deeper gold-copper porphyry intercept. Mineralisation remains open in every direction at both targets.

New Targets: Luz del Sol & Cuenca

Beyond the two discoveries, this season's channel sampling and shallow drilling defined two new porphyry targets along the same structural trend. At Luz del Sol, holes cut anomalous but sub-economic copper associated with porphyry dikes and hydrothermal breccias, sitting directly above a strong IP chargeability high, a classic vector for a porphyry source at depth, still untested by the drill bit.

At Cuenca, new road-cut channel sampling expanded the target to roughly 1.3 kilometres by 0.5 kilometres. The principal channel returned 153 metres averaging 0.31 g/t gold and 0.11% copper with two further channels returning 123.4 metres at 0.32 g/t gold and 61.7 metres at 0.19 g/t gold. A third target, Meseta, remains untested after difficult ground conditions forced Mogotes to defer drilling there in favour of higher-priority holes. The company plans to return in 2026–2027 to test for deeper high-sulphidation and porphyry mineralisation.

The Rio Tinto Alliance: Capital & Validation

The season's results are only half the story. On August 2026, Mogotes closed a US$15 million strategic investment from Rio Tinto Canada Inc., giving the major an initial roughly 5% stake priced at C$0.70 per unit, a premium of 50–70% to where Mogotes shares had been trading beforehand. The placement forms the basis of a Strategic & Technical Alliance covering Filo Sur, including a joint technical committee and access to Rio Tinto's geoscience and targeting tools.

Sabet was direct about what Mogotes gave up in exchange. Rio Tinto secured a 15-month project-level exclusivity period on Filo Sur, extendable by a further six months, along with a right to match third-party proposals and a top-up right to acquire up to 9.99% of Mogotes' shares. What the company did not surrender, he said, is control of its own technical decisions or the ability to bring in other investors at the corporate level.

"We're still a junior, we're still nimble. We can make all the choices on allocating drill meters. We didn't give up our discretion, we got the money at a premium."

The exclusivity period effectively sets a clock: Rio Tinto has the current field season to evaluate Filo Sur before deciding whether to pursue a project-level transaction. Sabet framed the coming months as the period in which that decision gets made, one way or another.

Interview with Allen Sabet, CEO of Mogotes Metals Inc.

Montana & Kazakhstan: Two More Shots on Goal

Filo Sur isn't Mogotes' only asset. In Montana, the company holds an earn-in option delivered by Rio Tinto over a copper-gold porphyry system the major had previously drilled across roughly 36,000 metres and 42 holes, identifying mineralisation open at depth and along strike on a large, largely undrilled land package. Under the arrangement described by Sabet, Mogotes can earn 51% of the project through $16 million of drilling and expenditure, after which Rio Tinto retains the right to buy back a controlling 2% stake for $32 million, double what Mogotes will have spent. Permitting is pending; if approvals arrive on schedule, drilling of roughly 8,000–9,000 metres could begin as early as October 2026.

In Kazakhstan, Mogotes holds an option to acquire 100% of a multi-million-ounce Beskauga copper-gold-silver porphyry deposit sitting under cover from about 40 metres depth, with an existing resource of 1.8 million ounces of indicated gold and 333,000 tonnes of indicated copper, plus a further 1.5 million ounces of inferred gold and 222,000 tonnes of inferred copper, on the back of roughly 70,000 metres of historical drilling. Mogotes has already drilled around 5,000 metres under the option and is targeting 50,000 metres of further work, alongside a preliminary economic assessment (PEA) within twelve months and a subsequent pre-feasibility study. First assay results from the current programme are expected in October or November 2026.

Capital Allocation & the 2026–2027 Season

With treasury sitting at approximately C$75 million, Mogotes says it is funded for the next 12 months. Planning is under way for up to 20,000 metres of drilling at Filo Sur in 2026–2027, more than triple this season's total, at an estimated cost of C$40 million, prioritised across extension drilling at Albor and Cruz del Sur, first porphyry tests at Luz del Sol–Cuenca, completion of testing at Meseta, and reconnaissance along the wider, largely untested 10-kilometre length of the MMFZ.

Asked how the company would prioritise a multi-project, multi-continent programme, Sabet was clear that the allocation decision would follow the geology, not market sentiment.

"The meterage will be focused wherever it's necessary based on technical judgment, not on market conditions. We're entirely focused on how we can drill good metal this next 12 to 15 month period."

The Investment Thesis for Mogotes Metals

• Both of this season's discoveries sit on the Macho Muerto Fault Zone, a 10-kilometre structure that remains mostly undrilled, giving Mogotes a defined, repeatable exploration model rather than a single isolated hit.
• Rio Tinto's $15 million placement priced at a 50–70% premium to the prevailing share price, reducing dilution while bringing technical backing from one of the sector's most experienced porphyry explorers.
• Rio Tinto's 15-month exclusivity period (to late 2027) means the current field season's results are likely to shape the major's next move - a binary-ish event worth watching closely.
• A move from 6,208 metres to a planned 20,000 metres represents more than a tripling of activity and spread across five prioritised target areas.
• Kazakhstan drill results are due within October–November 2026, and Montana drilling could start as early as October 2026 if permits are granted, giving investors news flow outside the Andean field season.
• Despite the Rio Tinto exclusivity, Mogotes retains the ability to bring in new investors or field a takeover bid at the corporate level, which the company frames as a deliberate protection for shareholders.

Macro Thematic Analysis

Mogotes' pitch rests on geography as much as geology. The Vicuña district has become one of the most closely watched copper-gold corridors in the world following Lundin Mining and BHP's Filo del Sol discovery, and majors have been actively repositioning around the belt as a result. For a junior explorer, sitting immediately along strike from that kind of discovery carries obvious appeal - but it also means Mogotes will be judged against an unusually high bar for grade and continuity.

That is precisely the comparison Sabet leaned into when describing Albor's multi-stage brecciation and grade uplift as echoing what has been found at Filo del Sol itself. Whether that analogy holds up under 20,000 metres of additional drilling next season is the central question for the stock over the next year. The Rio Tinto alliance adds a second, distinct macro thread: major mining companies have been increasingly willing to take early, minority positions in district-relevant juniors rather than wait for a resource to be defined, effectively outsourcing early-stage risk while retaining an option on the outcome. Sabet's own framing of that dynamic captures the wider opportunity Mogotes is selling to investors:

"The biggest copper discovery in the world's been made next door. The powers in the mining sector are coalescing around that this is going to be a big district, and we're finding mineralisation already."

For investors, the macro read-through is straightforward: this is a district where major-company capital is already flowing toward exploration-stage assets, and Mogotes has positioned itself as one of the more advanced non-discoverer names in that flow. The risk is equally straightforward - porphyry districts reward continuity and scale, and a single strong season of channel sampling and early drill hits is not yet a resource.

TL;DR 

Mogotes Metals closed a $15 million Rio Tinto investment in August 2026 and is heading into a 2026–2027 drill season that will more than triple its metreage at Filo Sur, in Argentina and Chile's Vicuña district. The company's first full season delivered two discoveries - the high-grade Albor breccia and the Cruz del Sur porphyry - both on the Macho Muerto Fault Zone, plus two new untested porphyry targets at Luz del Sol and Cuenca. Rio Tinto's 15-month exclusivity period over Filo Sur runs alongside the coming season, making the next year a genuine catalyst window. Kazakhstan and Montana option projects add near-term news flow outside the Andean season.

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