Orosur Mining Announces Discovery at El Cedro

Orosur reports 61.35m at 0.93g/t Au from surface in El Cedro’s first drill hole.

What the company is saying

Orosur Mining Inc. is highlighting the initial assay results from its first drill hole (CED001) at the El Cedro prospect, part of the Anzá Project in Colombia. The company frames the results as highly encouraging, emphasizing a 61.35m interval at 0.93g/t gold from surface, including a 42.15m section at 1.02g/t from 19.20m. CEO Brad George describes the outcome as evidence of a substantial porphyry/hydrothermal mineralised system, positioning this as a rare grassroots discovery. The announcement details the technical context, including the targeting of a vein system at 100m and the ongoing nature of the drill program, with assays pending for deeper intervals. Orosur stresses its 100% ownership of the project and the systematic approach to exploration, referencing both historical and recent mapping and sampling. The tone is confident but relies on early-stage data, with management openly stating that further drilling and assays will shape next steps.

What the data suggests

The disclosed data shows a continuous mineralised interval of 61.35m at 0.93g/t Au from surface in CED001, with a higher-grade core of 42.15m at 1.02g/t Au starting at 19.20m. The final sample of the assayed interval returned 1.25g/t Au, suggesting mineralisation remains open at depth. Channel sampling of surface veins produced results up to 8.83g/t Au, with individual samples of 4.21g/t, 8.83g/t, and 2.31g/t Au, indicating localised high-grade potential. The target vein system was intersected at 100m as planned, but assays for this deeper zone are pending. The project area covers approximately 530km2 and is owned 100% by Orosur through its subsidiaries. The APTA prospect within the same project has seen about 40,000m of drilling, demonstrating ongoing exploration commitment. Only partial results from the first hole at El Cedro are available, so conclusions about scale or economic potential are premature. The technical disclosure is detailed for an exploration update, but the evidence base is limited to initial intervals and surface sampling.

Analysis

The announcement provides specific, verifiable assay results from the first drill hole at the El Cedro prospect, including detailed grades and intervals, which are appropriate and expected for an exploration-stage update. The tone is positive, with the CEO describing the results as 'highly encouraging' and evidence of a 'substantial porphyry/hydrothermal mineralised system,' but this characterization is somewhat inflated given that only partial results from a single hole are available and no resource estimate or economic assessment is provided. Most claims are realised and supported by disclosed data, with a minority of statements being forward-looking (e.g., pending assays, planned drilling). The benefits of the exploration program (potential resource definition or economic value) are not immediate but are expected in the near term as further results are released. There is no indication of a large capital outlay or financial commitment at this stage, and the absence of financial data is not a deficiency for a junior explorer. The main gap between narrative and evidence is the extrapolation from limited early results to broader geological significance.

Risk flags

• ●The current results are based on partial assays from a single drill hole, so geological continuity and economic viability remain unproven. This limits confidence in extrapolating to a larger system.
• ●Assays for the most prospective deeper vein zones are still pending, and there is no guarantee that grades or widths will improve or remain consistent at depth. If subsequent results are weaker, initial enthusiasm could fade.
• ●Operational risk exists due to only one rig being deployed at El Cedro, which constrains the pace of exploration and the ability to quickly test multiple targets or confirm continuity.
• ●The company provides no financial data or information on funding, cash position, or exploration budget, so the ability to sustain an extended drill campaign is unclear.
• ●The announcement relies on surface sampling and early-stage drilling, which are inherently high-risk and may not translate into a resource or mineable deposit without further successful work.

Bottom line

Orosur’s first drill results from El Cedro show a promising 61.35m interval at 0.93g/t Au from surface, with a higher-grade core and encouraging surface channel samples. These figures suggest the presence of a mineralised system but are not yet sufficient to demonstrate scale or economic potential. The company is progressing methodically, with CED001 planned to reach 500m and further assays expected soon, but only one rig is active and deeper results are still pending. No financial or funding details are disclosed, so the sustainability of the exploration effort is unknown. Investors should watch for the next set of assays, especially from the targeted vein zone below 100m, as these will be critical in determining whether El Cedro can deliver a meaningful discovery. The key takeaway is that while the early data is positive, this is still a high-risk, early-stage exploration story.

Announcement summary

(TSXV:OMI) Orosur Mining Inc. announced partial results from the first drill hole (CED001) at the El Cedro prospect, part of its Anzá Project in Colombia. The first 61.35m of CED001 returned a composite intersection of 61.35m at 0.93g/t Au from surface, including 42.15m at 1.02g/t Au from 19.20m depth. The final sample of this interval returned 1.25g/t Au. Channel sampling of surface veins at El Cedro returned values up to 8.83g/t Au, with specific samples including 4.21g/t Au, 8.83g/t Au, and 2.31g/t Au. The El Cedro prospect is a cluster of gold/copper porphyry intrusions and associated hydrothermal systems in the south of the Anzá Project area. The Anzá Project comprises approximately 530km2 of granted exploration titles and applications in Colombia, owned 100% by Minera Anzá and Minera Monte Aguila, both wholly owned subsidiaries of Orosur Mining Inc. The company has focused on three prospects: Pepas, APTA, and El Cedro. The APTA prospect has seen approximately 40,000m of drilling since 2012. Drilling at El Cedro commenced on August 26, 2026, with CED001 currently at 130m and planned to extend to 500m, expected to be completed by the end of the month. The target vein system was intersected at 100m as anticipated, with assays pending for deeper intervals. Only one rig is currently dedicated to El Cedro, with two more holes planned from the same pad once CED001 is complete. CEO Brad George stated that these results are highly encouraging and evidence of a substantial porphyry/hydrothermal mineralised system. The company considers this the first hole ever drilled on the prospect. The Anzá Project is located within the Mid-Cauca gold belt, west of Medellín, Colombia. The company resumed control of the project in November 2024 and has since completed surface mapping, geochemical surveys, and drone magnetic surveys. Assays for samples from 61.3m to 86m have been submitted, with results expected soon.

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