The

Metals Playbook

The playbook — copper · August 28, 2026

Rio Tinto buys into Mogotes and its frontier Vicuña ground

A major has put US$15M and its geoscience toolkit into an exploration-stage porphyry company on the Argentina–Chile border, forming a technical alliance on the Filo Sur project.

Rio Tinto has put money into a company that barely existed three years ago. On August 27, Mogotes Metals closed a US$15 million (C$21.27 million) placement from the mining major, priced at C$0.70 a unit with 18-month warrants at C$1.00. Rio Tinto takes an initial roughly 5% stake, with the right to top up to 9.99%, and the two sides have formed a technical alliance on Filo Sur, an exploration project straddling the Argentina–Chile border. Concurrent pre-emptive rights exercises added another C$5.58 million. This is the third big raise in a year for a company that only began trading on the TSXV in June 2024.

Here is the mechanism. Filo Sur sits in the Vicuña belt — a genuinely tier-one copper-gold-silver porphyry district that already hosts Filo del Sol and Josemaria, deposits big enough that BHP and Lundin Mining paid C$4.5 billion for Filo Corp. A major taking exclusivity on your ground is a real signal of confidence in the rock. But confidence is not a discovery. This is a financing and alliance announcement, not a drill-results release, so there are no intercepts, no grades, and no widths to weigh here. The alliance gives Mogotes access to Rio Tinto’s proprietary geoscience tools and a joint technical committee, and the two are even discussing extending the arrangement to belts in Kazakhstan. Behind the deal is a board that leans heavily on one name: director Carmel Daniele of CD Capital, a pre-discovery investor in that same Filo Corp before BHP and Lundin Mining came calling. Her fund now holds close to 19.9%.

Now the honest part. Mogotes has no established resource; its stated objective is still to identify one. CEO Allen Sabet’s background is McKinsey consulting and a private, non-producing prospecting group, with no public-company mine to his name. Two of six directors are brothers, concentrating control in one family. The Rio Tinto exclusivity runs 15 months, extendable by six — if the major walks at the end, the strategic support underpinning the story goes with it. The stock’s 52-week low is C$0.17, well below the C$0.70 placement price. What to watch next: final assays from holes FS_DDH_013 and FS_DDH_015 at Luz del Sol in Chile, awaited as of the July 9 release, and the plan for 2026–2027 drilling across the concessions. Readers decide what the endorsement is worth.

Public sources: source 1source 2source 3source 4source 5