Rockfire Resources Receives High Grade Assay Results from Marengo Goldfield Partner

Rockfire Resources PLC (LSE:ROCK) has announced that its farm-in partner, Eastern Resources (ASX:EFE), has returned high-grade rock-chip assay results from the Marengo Goldfield located in Queensland, Australia. The results strengthen the exploration thesis for shallow gold and silver mineralisation at the project.

The recently collected rock-chip samples demonstrated anomalous to elevated gold concentrations across the board. Twenty samples returned values exceeding 1.0 grammes per tonne of gold, whilst thirteen samples surpassed 5.0 grammes per tonne. The highest grade assay recorded 12.30 grammes per tonne of gold accompanied by 9.2 grammes per tonne of silver.

Additional notable results included 10.25 grammes per tonne gold with 9.9 grammes per tonne silver, 9.43 grammes per tonne gold alongside 3.5 grammes per tonne silver, and 8.91 grammes per tonne gold with silver concentrations exceeding 100 grammes per tonne.

Under the terms of a binding farm-in agreement established in September 2025, Eastern Resources is solely funding exploration activities at Marengo for a three-year period. The partnership structure requires Eastern to commit AUD 1.5 million across three stages to earn up to an 80 per cent interest in the Marengo exploration permit.

The agreement includes a milestone payment provision whereby Rockfire would receive AUD 1 million, payable in either cash or Eastern Resources shares at Eastern’s discretion, contingent upon Eastern announcing a JORC-compliant mineral resource estimate of at least 500,000 ounces of gold at a minimum average grade of 2.5 grammes per tonne.

The high-grade surface sampling results provide encouraging early-stage exploration indicators for the Marengo Goldfield, with Eastern Resources now positioned to advance exploration work whilst Rockfire maintains exposure to potential upside through its retained equity interest and milestone payment structure.