Orosur Mining (AIM:OMI), the TSXV and AIM-listed gold explorer, has started the first drilling campaign ever undertaken at El Cedro, a gold-copper porphyry cluster within its Anzá project in Colombia.
The first hole, CED001, intersected a porphyry intrusion immediately, showing stockwork veining, silicification and potassic alteration, and is targeting a depth of 500 metres over roughly five weeks.
Anzá sits in the Mid-Cauca gold belt west of Medellín and is held 100% through two Colombian subsidiaries, Minera Anzá and Minera Monte Aguila.
El Cedro was first identified by Anglo American, whose reconnaissance work returned assays up to 10g/t gold and 2% copper, before Orosur's former joint venture partner MMA followed up with mapping and geophysics in 2021.
The company has also expanded its land position, filing new licence applications that bring the total area under application to 360 square kilometres, which combined with 170 square kilometres of granted titles takes the overall project to approximately 530 square kilometres.
At Pepas West, roughly 100 metres from the Pepas deposit that underpins Orosur's maiden mineral resource estimate published on 10 February, the latest holes PEP106 and PEP107 continue to define a shallow, oxidised zone of medium-grade mineralisation.
Given the target's thin, broad geometry, Orosur has moved its diamond rig elsewhere and is trialling auger drilling to sample unconsolidated material down to 10 metres, a method it says could help move Pepas West toward resource status.
At APTA, where more than 40,000 metres have been drilled since 2012, the latest hole, MAP108, intersected a broad low-grade zone and is helping define the structural controls on higher-grade mineralisation.
"The Anza project is now ramping up with three rigs running, one at each of Pepas, APTA and El Cedro and planned to remain for some time," chief executive Brad George said.
News Intelligence what this means for the company
Orosur has begun first drilling at El Cedro, a gold-copper porphyry target within Anzá, with the initial hole immediately intersecting a porphyry intrusion showing classic alteration signatures and targeting 500 metres depth. The company now operates three rigs concurrently across Anzá and has expanded its land position to ~530 square kilometres, materially scaling the district-scale opportunity it holds 100% through Colombian subsidiaries.
El Cedro represents a new, untested porphyry target within Anzá; early intersection of porphyry features is encouraging but assay results and depth extension remain unknown. The three-rig campaign signals management confidence in the project's scale, though execution risk on all three fronts (Pepas resource definition, APTA structural mapping, El Cedro maiden drilling) remains material.
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