Orosur Mining, a company focused on mineral exploration in South America, has recently announced significant progress in its drilling activities at two key projects – the Anzá gold exploration project in Colombia and the El Pantano gold/silver exploration project in Argentina.
At the Anzá project, Orosur is working towards achieving a NI43-101-compliant mineral resource estimate (MRE) for the Pepas prospect, with a target completion date set for January 2026. The company has full ownership of approximately 330km² of exploration titles in the Mid-Cauca gold belt, following the acquisition of Minera Monte Aguila in November 2024 from previous joint venture partners Newmont Mining and Agnico Eagle Mines. The exploration at Anzá is focused on three main targets – Pepas, APTA, and El Cedro.
Pepas, a shallow, high-grade gold zone, is being advanced towards an initial MRE, with infill drilling initiated in July 2025. Recently, external geological and resource consultants visited the Anzá site to perform quality assurance and support the development of a new NI43-101 technical report. Following their recommendations to better define the deposit limits, additional drilling was conducted both within and beyond the current deposit envelope, yielding valuable structural information.
At the El Pantano Project in Argentina, Orosur holds a 51% ownership stake under a JV agreement with Deseado Dorado. The project covers approximately 550km² within the Deseado Massif, near Anglo Gold’s Cerro Vanguardia and Newmont Mining’s Cerro Negro mines. Orosur is currently in phase two of the JV and may earn up to 100% ownership by investing $2m (C$2.75m) in exploration by February 2027.
Drilling at El Pantano is progressing ahead of schedule, with seven holes drilled so far and samples submitted for analysis. The exploration is expected to be completed by the end of January 2026. Orosur CEO Brad George expressed optimism about the progress, stating that the company is on track to deliver a report on the Pepas project in January. He highlighted the successful identification of a previously unknown mineral system at El Pantano, emphasizing the challenges and opportunities for further exploration.
In conclusion, Orosur Mining’s recent advancements at the Anzá and El Pantano projects demonstrate the company’s commitment to exploration and development in South America. The ongoing drilling activities and upcoming MREs signal potential growth and opportunities for Orosur in the region.
