Infill drilling hits 104m @ 6.61g/t Au at Pepas
Infill drilling at Pepas gold prospect returns 104m @ 6.61g/t Au from surface.
- PEP047 intercept 104m @ 6.61g/t Au from surface
- PEP047 high-grade zone 36.6m @ 10.23g/t Au
- PEP047 deeper zone 15.4m @ 10.3g/t Au
- PEP048 intercept 32.3m @ 3.65g/t Au from surface
- PEP049 intercept 94.2m @ 3.74g/t Au from surface
- Holes drilled since November 2024 38 holes
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Orosur Mining Inc - infill drilling hits 104m @ 6.61g/t Au from surface at Pepas.
- Assays from three more holes from the Pepas MRE infill program:
o PEP047 - 104m @ 6.61g/t Au from surface
o PEP048 - 32.3m @ 3.65g/t Au from surface
o PEP049 - 94.2m @ 3.74g/t from surface
Soil sampling about to recommence at El Cedro
London, August 5th, 2025. 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 flagship, 100% owned, Anzá Gold Project ("Project") in Colombia.
As announced on 14th July 2025, the Company has taken the formal decision to commence infill drilling at its Pepas gold prospect, with the target of moving Pepas to a NI43-101 compliant Mineral Resource Estimate (MRE) by the end of the year.
The first several holes of this program (announced 17th July 2025), vindicated this decision by returning exceptional widths and grades, especially hole PEP045 which returned 62.3m @ 12.76g/t Au.
A drill program has been designed in conjunction with external consultants to facilitate an MRE being calculated. This program has been designed with the multiple objectives of infilling previous drilling, expanding beyond current drilling to define the boundaries, and understanding the geological controls upon mineralisation and the variations in geology and grade across the deposit.
Holes will be drilled in an order that attempts to address these issues concurrently.
As a result of the shallow nature of mineralisation, holes are generally short, taking between three and four days to complete on average. When the Company reassumed control of the Project in December 2024, samples were shifted to a fire-assay laboratory facility in Medellin, that has consistently provided 3-4 days turnaround of assay results. The Company is thus currently averaging roughly one hole per week with only one rig - an exceptionally fast rate of progress by industry standards.
These three holes announced today are a continuation of this infill program and have all returned exceptional results (most especially PEP047), with thick sequences of high-grade gold mineralisation commencing from surface.
| Hole Number | From (m) | To (m) | Interval (m) | Au (g/t) |
|---|---|---|---|---|
| PEP047 | 0 | 104 | 104 | 6.61 |
| including | 5 | 41.6 | 36.6 | 10.23 |
| including | 83.05 | 98.45 | 15.4 | 10.3 |
| PEP048 | 0 | 32.3 | 32.3 | 3.65 |
| including | 5 | 27.8 | 22.8 | 4.51 |
| PEP049 | 0 | 94.2 | 94.2 | 3.74 |
| including | 0 | 6.65 | 6.65 | 7.27 |
| including | 17.85 | 40.35 | 22.5 | 5.61 |
| including | 61.55 | 82.15 | 20.6 | 5.04 |
Table 1. Latest drill Intercepts, Pepas Prospect
Infill drilling is ongoing, but the recent holes are already beginning to provide greater understanding of the genesis of Pepas and, as importantly, grade distribution which will be vital for mine planning studies.
While drilling continues, in the near term, the Company will soon begin to undertake additional studies on such issues as metallurgy, mining planning and logistics, so that Pepas can be advanced as quickly as possible post its maiden MRE.
Figure 2. Plan of holes
Figure 3. Section, PEP047
Figure 4. Section PEP048 and PEP049
El Cedro
The El Cedro prospect is a large gold porphyry system, located toward the south of the Anzá project, on the same granted EL as the Pepas and APTA deposits.
As previously announced (28th May 2025), the Company had commenced a large soil sampling program at El Cedro, designed to expand upon previous work by Anglo American and the Company's previous JV partner. This sampling program was roughly 1/3 complete when it had to be suspended due to road damage sustained from an unusually wet season in the region. Rains have now abated, and this road damage has been repaired such that Company geological crews will be returning to El Cedro this week to recommence this program.
Orosur CEO Brad George commented:
"The latest results at Pepas continue to impress. While size remains to be defined, the picture of Pepas as a highly lucrative mining proposition is rapidly solidifying. We are increasingly confident that there is a commercially viable opportunity at Pepas and so we will very soon commence non-drill related studies to begin the process of advancing Pepas toward development."
Colombia - ANZÁ Project
Prospects
Figure 5. Main prospects, licences pre-MMA acquisition
Holes Drilled post MMA Transaction
38 holes have been drilled at Pepas since the MMA Transaction in November 2024.
Assay results are tabulated below.
| Hole Number | From (m) | To (m) | Interval (m) | Au (g/t) |
|---|---|---|---|---|
| PEP012 | 0 | 66.75 | 66.75 | 5.64 |
| PEP013 | 0 | 77.30 | 77.30 | 7.68 |
| PEP014 | 0 | 75.1 | 75.1 | 5.58 |
| PEP015 | 23.5 | 63.7 | 40.2 | 3.75 |
| PEP016 | 61.6 | 105.3 | 43.7 | 3.13 |
| PEP017 | 56.1 | 96.3 | 40.2 | 2.06 |
| PEP018 | 0 | 54.1 | 54.1 | 6.01 |
| PEP019 | 0 | 44.3 | 44.3 | 1.63 |
| PEP020 | 0 | 54.65 | 54.65 | 1.94 |
| PEP021 | 0 | 107.05 | 107.05 | 6.22 |
| PEP022 | 0 | 76.3 | 76.3 | 7.24 |
| PEP023 | 0 | 15 | 15 | 1.7 |
| PEP024 | 9.24 | 15.6 | 6.35 | 1.99 |
| PEP025 | 0 | 10.1 | 10.1 | 1.45 |
| 16.5 | 79 | 62.5 | 5.4 | |
| PEP026 | 0 | 14.8 | 14.8 | 0.57 |
| 43.6 | 72 | 28.4 | 2.52 | |
| PEP027 | 1 | 80.15 | 79.15 | 2.0 |
| PEP028 | 29.5 | 60.85 | 31.35 | 1.61 |
| PEP029 | 0 | 30.7 | 30.7 | 0.31 |
| PEP030 | 0 | 77.9 | 77.9 | 0.32 |
| 115.6 | 122.6 | 7 | 0.31 | |
| PEP031B | 28.15 | 41.1 | 12.95 | 0.73 |
| 74.1 | 95.9 | 20.8 | 0.3 | |
| PEP032 | 0 | 92 | 92 | 1.68 |
| PEP033 | 0 | 21.3 | 21.3 | 5.88 |
| PEP034 | 36 | 95 | 59 | 10.15 |
| PEP035 | 0 | 11.4 | 11.4 | 2.71 |
| PEP036B | 0 | 40.45 | 40.45 | 0.62 |
| PEP037 | 0 | 3 | 3 | 0.65 |
| PEP038 | 0 | 16.8 | 16.8 | 0.68 |
| PEP039 | No significant intersections | |||
| PEP040 | 0 | 10.25 | 10.25 | 1.35 |
| PEP041 | 34.35 | 66.1 | 31.75 | 2.01 |
| PEP042 | 104.8 | 107.55 | 2.75 | 1.41 |
| 116.45 | 119.7 | 3.25 | 4.89 | |
| PEP043 | No significant intersections | |||
| PEP044 | 5.8 | 44.3 | 38.5 | 6.01 |
| PEP045 | 9.5 | 71.8 | 62.3 | 12.76 |
| PEP046 | 0 | 53.2 | 53.2 | 3.36 |
| PEP047 | 0 | 104 | 104 | 6.61 |
| PEP048 | 0 | 32.3 | 32.3 | 3.65 |
| PEP049 | 0 | 94.2 | 94.2 | 3.74 |
Table 2. Results to date, post MMA Transaction
Cleaned text: letterheads, contacts and legal notices removed. View the original announcement ↗ · Company filings. Not investment advice.