Kalkine – FTSE 100 Mining Firm Orosur (LON:OMI) Updates on Pepas and Anzá Project

4 min read | May 29, 2025 05:48 PM AEST | By Team Kalkine Media

Highlights

  • Orosur Mining Inc (LON:OMI) reports new assay results from Pepas and Pepas North.

  • Preliminary technical assessments are underway at the Pepas prospect.

  • El Cedro shows highly anomalous soil geochemistry based on ongoing exploration.

Orosur Mining Inc (LON:OMI), listed on the FTSE AIM index, continues to advance its exploration activities at the Anzá Project in Colombia, within the country’s prolific mid-Cauca gold belt. The company, classified in the mining sector, has provided updates on drill assays and geochemical findings at its Pepas and El Cedro prospects. The project is now fully owned by Orosur following the acquisition of Minera Monte Aguila.

Exploration Progress at Pepas and Pepas North

The Pepas prospect, located at the northern end of the Anzá Project, remains a key exploration focus. Drilling activities at this site have returned assay results from five additional holes. Intervals from these drill holes, including shallow intersections, highlight the continuity of gold mineralisation in the area. The early-stage drilling at Pepas North has also returned mineralised halo intersections, which are currently being evaluated further.

Orosur has confirmed that technical studies have commenced at Pepas to support ongoing geological assessment and further work programs. These studies aim to characterise the mineralisation and support the planning of subsequent exploration activities.

Advancement of Geological Surveys at El Cedro

Parallel to the drilling work at Pepas, mapping and sampling are progressing at El Cedro, situated in the southern region of the Anzá Project. El Cedro is characterised by a porphyry system and lies within the same exploration license that hosts Pepas and APTA, although in a separate block. Early soil geochemistry data from El Cedro is described as highly anomalous, indicating the presence of mineralised systems that warrant further exploration.

Ownership and Location Benefits

The Anzá Project is located approximately west of Medellin, offering access to developed infrastructure, including road, water, and power networks. The logistical advantages facilitate exploration activities across the project area. Following a strategic agreement completed previously, Orosur now holds complete ownership of the project, previously managed by a joint venture between two global gold producers.

This full ownership enables streamlined decision-making and direct management of exploration priorities. With Pepas currently the primary area of focus, and supporting work continuing at El Cedro and APTA, Orosur has outlined a structured plan for progressive exploration within the mid-Cauca belt.

Project Context Within Colombia’s Gold Belt

The Anzá Project is located along strike from several established gold and copper assets, including Buritica, Quebradona, and Guayabales/Marmato. This regional positioning places Orosur within a corridor of active mineral exploration and production.

The mid-Cauca belt is recognised as a significant host of gold and copper deposits in Colombia, and Orosur’s tenure in the area continues to contribute to the broader understanding of this geologically rich zone. With the integration of new assay results and ongoing fieldwork, the company maintains active progress across its holdings.

Drill Campaigns and Technical Initiatives

The latest drilling efforts at Pepas form part of a broader campaign designed to enhance the understanding of the mineralised zones across the northern sector of the license. Technical assessments now underway will support detailed geological modelling and guide future campaigns.

Work at Pepas North has only recently commenced, and early results are being assessed in relation to known mineralised trends. These initial findings are expected to inform the scope and direction of future drilling in this area.

Orosur Mining Inc (LON:OMI), while listed on the AIM market, operates in the broader context of mining companies tracked under UK-based indices such as the FTSE 100, especially as global commodity firms influence and interact with major benchmarks.


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