Pepas West Expanding
Orosur Mining Inc. has announced encouraging exploration results from its Anzá Project in Colombia, with ongoing drilling at Pepas West revealing significant gold mineralization, including intercepts of 16.1m at 2.68g/t Au in hole PEP085 and 23.45m at 2.98g/t Au in hole PEP090, which also demonstrated extension potential 30m to the north. The company is also progressing with hole MAP-106 at the APTA prospect, which is now in the target zone, and plans to return the drill rig to Pepas West in several weeks to further define the newly discovered mineralized zone.
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- Hole PEP090 stepped out 30m north of previous holes, demonstrating extension potential.
- Rig currently drilling south of Pepas, will return to Pepas West in several weeks.
- Hole MAP-106 at APTA now in the target zone.
London, May 13th, 2026. Orosur Mining Inc. ("Orosur" or the "Company") (TSXV/AIM:OMI), is pleased to announce an update on the progress of exploration activities at the Company's exploration project at Anzá in Colombia ("Anzá" or the "Project").
Anzá - Colombia
Since acquiring 100% control, the Company has focussed its attention on three prospects:
- Pepas - a shallow, high-grade ore body of gold mineralisation for which the Company has calculated a Mineral Resource Estimate ("MRE"), announced February 10th 2026.
- APTA - a high-grade body of gold mineralisation that has to date seen almost 39,000m of historical drilling, and at which drilling has recently recommenced.
- El Cedro - a cluster of gold porphyry intrusions in the south of the Project area that are currently subject to mapping and sampling programs, with a view to potentially being drilled as soon as targets can be finalised and logistics arranged.
Figure 1. Anzá Project
Pepas
This MRE was based upon drilling undertaken by the Company and its previous JV partner from 2022 to late 2025. Results from the final hole included in the MRE, PEP074, were announced on January 8th, 2026.
Following completion of the MRE drillout in late 2025, the Company then embarked on a semi-regional drilling program around the Pepas deposit. The objective of this drilling program was to better understand the larger scale litho-structural controls that led to formation of the Pepas deposit, such that, in combination with additional mapping and sampling in the wider region, vectors toward additional mineralisation might be developed.
As announced on April 14th, 2026, a new zone of mineralisation, geologically similar to Pepas, has been discovered approximately 100m west of the main Pepas zone.
This zone had been first identified in two drill holes from early 2025, but only returned to in early 2026 once the Pepas MRE had been completed.
A number of holes (PEP082 to PEP090) have now been completed into this zone, from various positions and in various directions, in order to gain some understanding of the nature, orientation and controls upon this zone. Results thus far are highly encouraging with thick intersections of shallow gold mineralisation being recorded. Particularly encouraging was PEP090, drilled some 30m NW of previous holes, demonstrating mineralisation over 100m in strike with untested strike extension.
| Hole Number | From (m) | To (m) | Interval (m) | Au (g/t) |
|---|---|---|---|---|
| PEP084 | 0 | 6.95 | 6.95 | 0.98 |
| 8.5 | 10.8 | 2.3 | 0.48 | |
| PEP085 | 0 | 3.7 | 3.7 | 0.63 |
| 14.95 | 31.05 | 16.1 | 2.68 | |
| including | 20.9 | 26.25 | 5.35 | 4.18 |
| PEP086 | 0 | 9.8 | 9.8 | 0.96 |
| including | 0 | 4.3 | 4.3 | 1.83 |
| PEP087 | 9.4 | 31.1 | 21.7 | 1.42 |
| including | 19.05 | 27.8 | 8.75 | 2.28 |
| PEP088 | 4.9 | 14.7 | 9.8 | 1.41 |
| PEP089 | 6.9 | 11.15 | 4.25 | 0.38 |
| PEP090 | 9.6 | 14.15 | 4.55 | 0.46 |
| 17.95 | 41.4 | 23.45 | 2.98 | |
| including | 29.9 | 37.3 | 7.4 | 7.23 |
| 64.1 | 69.9 | 5.8 | 1.94 | |
| including | 67.6 | 69.9 | 2.3 | 3.19 |
Table 1. Latest drill Intercepts, Pepas Prospect
As previously announced, after completion of hole PEP090, the rig operating at Pepas has been moved southward to other targets, to allow time for geological and assay information from Pepas West to be compiled. This is an ongoing process; however, the Company's geological team note that Pepas West is worthy of follow-up and it is planned that the rig will return here in several weeks to begin to define the size of this mineralised zone.
Figure 2. Plan of holes, Pepas West
Figure 3. Section PEP084,85,86
Figure 4. Section PEP087
Figure 5. Section PEP088
Figure 6. Section PEP090
APTA
The APTA prospect in the centre of the Project area has seen almost 39,000m of drilling by various companies since 2012. This work has identified a substantial epithermal gold system.
A new phase of drilling was commenced some weeks ago, with hole MAP-106 planned to assess several new geological concepts to assist in planning a larger drill campaign that may, if successful, allow APTA to move to resource status.
Progress of MAP-106 has been very slow due to several zones of difficult and broken ground. However, the hole is now well past 300m and within the target zone. Going forwards, new drill pads are being developed in different locations such that these issues are not repeated.
Orosur CEO Brad George commented:
"It is encouraging to see Anzá now beginning to delivery on its promise. Pepas now has a resource, with more being found nearby, APTA being drilled and El Cedro yet to come."
Cleaned text: letterheads, contacts and legal notices removed. View the original announcement ↗ · Company filings. Not investment advice.