PT Merdeka Copper Gold Tbk (MDKA) has announced an updated Mineral Resource Estimate (MRE) for its Gua Macan porphyry copper-gold project in East Java, Indonesia.
The company confirmed the deposit contains 276 million tonnes of mineral resources, marking a significant quantification of the site's potential output.
The disclosure provides fresh data on one of Indonesia's key base-metal assets.
For traders monitoring copper and gold supply dynamics, the update adds concrete volume figures to a project that has been under development.
The scale of the resource suggests substantial long-term production capacity if the project advances through feasibility and permitting stages.
This development arrives as global markets continue to assess supply constraints in copper and the strategic importance of gold reserves.