GoldMining has started exploration drilling at its Yarumalito Gold-Copper Project  in Antioquia, Colombia, with 1200m planned across three drill holes in a fully-funded campaign.

Drilling will follow-up on high priority targets identified through relogging of historical core and focus on expanding sections of a mineralised P-1 porphyry unit.

Historical drills returned intercepts of 257m at 0.50g/t gold and 0.1% copper  from the surface at hole YAR-06; 250m at 0.51 g/t Au and 0.13% Cu from hole YAR-08, and 141.4m at 0.77 g/t Au and 0.09% Cu from hole YAR-11.

"Yarumalito sits in the heart of Colombia's prolific Mid Cauca belt, in close proximity to major discoveries like Collective Mining's Guayabales project and Aris Mining's Marmato mine," said GoldMining CEO Alastair Still.

"With diamond core drilling now underway on our second active exploration drilling programme in the Americas for 2026, we are testing a newly refined geological model at Yarumalito. This large, highly accessible gold-copper porphyry system remains open in all directions and the targeted drill is our first step in seeking to unlock the substantial step-out growth potential of the mineralized P-1 host unit."

The 100% owned project is located in the Mid Cauca Au-Cu Belt of central Colombia, about 105km south-southwest of Medellín.

An existing mineral resource estimate was completed on the Project based on 50 holes drilled between 2005 and 2013 containing 18,000m of core. The MRE comprises 66.3mt at 0.58g/t Au.

A fourth drill hole is planned to target epithermal veins mapped from abandoned underground historical mine workings.