Green & Gold Minerals Confirms High-Grade Copper and Indium at Copper Hills Ahead of May Drilling

Historic and New Data Highlight Copper Hills Potential

Green & Gold Minerals (ASX:GG1) has unveiled compelling evidence of high-grade copper, silver, and indium mineralisation at its Copper Hills prospect within the Herberton Conductor Metals Project in Queensland. The company is preparing to commence drilling in May, aiming to test these promising targets following a comprehensive review of historic drill data and new portable XRF analyses from mine dumps.

The historic drill results, dating back to 1979–1980 and recently made public, show notable intercepts such as 4 metres at 139 g/t silver and 1.3% copper from 101 metres, and 10 metres at 50 g/t silver and 0.9% copper from 28 metres. While these results have not been validated and some drill hole locations remain uncertain, they confirm the presence of copper and silver mineralisation below the historically mined oxide zone, suggesting continuity at depth.

Portable XRF Reveals Exceptional Indium and Copper Grades

Complementing the historic drilling, GG1’s recent portable XRF sampling of mine dumps at Copper Hills has revealed extraordinary grades of indium, a critical metal used in AI chips and display screens, alongside copper and silver. Highlights include samples with 774 g/t indium, 486 g/t silver, and 1.9% copper, and another with 35.3% copper and 281 g/t indium. These spot measurements confirm the presence of economically significant metals but do not represent average in situ grades.

Similar high-grade results were reported from the Penang Pekin historic mines, part of the Elizabeth Bluffs group, with copper up to nearly 30% and indium exceeding 300 g/t in some samples. The area remains underexplored in the modern era, with no historic drilling conducted there, underscoring its potential as a large-scale target for polymetallic mineralisation.

Strategic Focus on Electrification and AI Metals

The Herberton Conductor Metals Project tenements lie in a copper-silver dominant zone of a prolific mineral field historically known for tin mining. GG1 is targeting copper, silver, tin, and indium, metals increasingly critical for electrification and AI technologies. This strategy aligns with the company’s broader efforts to leverage future-facing commodities, as reflected in their recent acquisition of the Burlington Silver-Copper project, which expanded their footprint in this electrification metals hub.

GG1’s exploration approach includes restoring access roads and preparing for drilling not only at Copper Hills but also at other high-priority prospects including Mt Gossan and Siberia, where a 5-kilometre copper soil anomaly exceeding 100 ppm copper has been identified. Historic shallow drilling at Mt Gossan-Siberia showed consistent mineralisation, with rock chip assays returning indium grades up to 1,620 g/t. This area has not seen exploration for over four decades, presenting a significant opportunity.

Upcoming Drilling and Exploration Plans

Drilling is scheduled to begin at Copper Hills in May 2026, with plans to subsequently move the rig to Chillagoe to test gold targets at Sentinel and Mt Wandoo. Access track reinstatement for Mt Gossan and Siberia is also planned for May, with drilling to follow. These activities aim to build on the initial promising data and validate historic results, which GG1 cautions should not be solely relied upon due to incomplete records and unverified assay protocols.

Meanwhile, the Chillagoe Gold Project continues to advance, with ongoing modelling and studies at Mt Wandoo. The company’s dual focus on polymetallic and gold projects reflects a diversified exploration pipeline designed to capitalize on multiple commodity cycles.