FirstAu Unlocks a Potential Processing Pathway for Gimlet Gold

Gimlet Gains a Potential Processing Route

First Au Limited (ASX:FAU) has opened a possible route to production at its Gimlet Gold Project without committing to build a processing plant of its own. The company has signed an Ore Purchase Agreement with Forrestania Resources (ASX:FRS), under which suitable Gimlet ore may be purchased and processed through Forrestania’s Western Australian infrastructure.

That is a meaningful change in the project’s development options, but not a production commitment. The agreement does not begin its 24-month term until its conditions precedent have been satisfied or waived, and ore will only be accepted if it meets the agreed technical and commercial requirements.

Lake Johnston and Edna May Identified

The potential processing locations are Forrestania’s Lake Johnston gold treatment mill in the Goldfields-Esperance region and, subject to Forrestania completing its acquisition, the Edna May gold treatment mill at Westonia. FirstAu says access to established facilities could reduce the capital expenditure and development time associated with constructing a standalone operation.

Forrestania must first confirm that commercial processing operations are operational and ready to commence. FirstAu must also announce a positive board decision to mine at Gimlet and obtain the permits and approvals required for commercial mining. Those conditions must be met, or waived, by 7 September 2028 unless the parties extend the deadline.

Ore Quality and Delivery Rules Set the Limits

The framework applies only to gold-bearing ore that satisfies specified acceptance criteria, including minimum grade requirements and limits on soluble copper, arsenic, total sulphur, mercury and organic carbon. Each processing batch must contain between 50,000 and 150,000 tonnes, with a maximum of 2 million tonnes permitted over the term.

FirstAu will pay a $50,000 plant access fee on execution and will be responsible for transporting ore to the processing facility’s run-of-mine pad, including haulage and transit insurance. The purchase price will be calculated using a formula that references processing costs, ore grade, metallurgical recovery and a treatment charge, with provisional and final payment stages.

Exclusivity Brings Performance Pressure

During the term, FirstAu generally cannot sell or deliver Gimlet ore to another party. Ore grading below 1.0 grams per tonne may be sold elsewhere only after Forrestania has first been offered the opportunity to process it and does not accept within 14 days.

The agreement also contains performance-related default triggers. FirstAu may be deemed in default if less than 15,000 production ounces are recovered within eight months of commencement, or if it fails to deliver at least 12,000 dry metric tonnes at an average grade of 3.0 grams per tonne gold or higher in any two consecutive delivery months, subject to specified exceptions. The contract can also be terminated if the gold price falls below AUD$5,250 an ounce or rises above AUD$7,250 an ounce on a rolling 30-day basis, among other circumstances.

The Next Test Is Economic Mine Readiness

Executive Chairman Daniel Raihani said the agreement provides a potential way to monetise suitable ore without the capital cost and development timeframe of a company-owned processing facility. FirstAu says it will continue advancing Gimlet to identify mineralisation capable of meeting the agreement’s grade, quality, recovery and commercial requirements.

The practical question is therefore not whether FirstAu has found a processing address, but whether Gimlet can consistently supply acceptable ore at a scale and cost that works under the formula. The board mine decision, permitting timetable, Forrestania’s operating readiness and the eventual metallurgical results will determine whether this conditional pathway becomes an operating plan.