Fortuna Mining Secures Earn‑In Agreement for 70% Stake in Guyana Quartzstone Gold Project

FSM
April 20, 2026

Fortuna Mining Corp. has entered into an earn‑in agreement with Qstone Inc., a private Guyanese company, to acquire up to a 70% interest in the Quartzstone Gold Project. The 29,600‑hectare project lies in the greenstone belt of north‑central Guyana, roughly 120 km west of Georgetown and 35 km northwest of G Mining’s Oko West project, placing it in a prolific exploration camp.

Under the agreement, Fortuna will earn an initial 51% stake by completing 60,000 meters of drilling within four years and paying all license fees and related expenditures. Upon exercising the first option, Fortuna will form a joint venture with Qstone. A second option allows Fortuna to increase its stake to 70% by funding a feasibility study within three years of exercising the first option, while continuing to pay all license fees. The company paid Qstone a non‑refundable cash option premium of US$5 million at signing.

The earn‑in structure reflects a phased, risk‑managed approach that lets Fortuna test the project’s high‑grade, near‑surface gold potential before committing to full ownership. The Quartzstone Project hosts an orogenic gold system along the contact between a granitoid complex and Lower Proterozoic greenstone rocks, with gold hosted in quartz‑tourmaline‑carbonate veins and breccias. Fortuna’s initial exploration program, budgeted at about US$5.5 million, will focus on advancing priority targets and testing the 26‑km shear zone that hosts historic high‑grade zones.

Strategically, the deal expands Fortuna’s footprint into Guyana, a region that has attracted significant exploration investment due to its favorable geology and growing infrastructure. The ability to pay a US$5 million option premium and commit a multi‑million‑dollar drilling program signals financial stability and confidence in the project’s potential. By securing a majority stake, Fortuna positions itself to benefit from any future discoveries while maintaining a controlled exposure during the exploration phase.

Headwinds for the project include the inherent uncertainty of drilling outcomes and the cost of executing a large‑scale exploration program. However, the tailwind of Guyana’s proven gold geology, coupled with the proximity to other active projects, supports a positive outlook. Successful completion of the earn‑in milestones would allow Fortuna to transition from exploration to development, potentially unlocking significant value for shareholders.

The next steps for Fortuna involve meeting the 60,000‑meter drilling target within the four‑year window and, if successful, funding the feasibility study to unlock the full 70% stake. The earn‑in agreement therefore represents a key milestone in Fortuna’s growth strategy and a potential catalyst for future gold production in Guyana.

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