Angkor Resources Discovers Critical Geological Insights at Andong Bor Copper Project

Angkor Resources Corp. has advanced its analysis of drill core from the Andong Bor license in Oddar Meanchey, Cambodia, revealing critical geological insights that will shape future exploration strategies. The company's exploration team, led by VP Exploration Dennis Ouellette, has completed detailed review of both historical drilling and the most recent 2025 drilled holes ABDDH25-009 and ABDDH25-010.

The 2025 drilling program yielded significant observations, particularly in hole 009 which reached substantially greater depth than previous efforts. Between 245 metres and 316 metres depth, the drill core displayed mineralization with abundant pyrite and chalcopyrite, indicating promising copper potential. This represents an important advancement beyond the company's previous analysis conducted in late 2022, which was based solely on core drilled by a different company as detailed in their earlier press release available at https://angkorresources.com/news/angkor-confirms-108-metres-of-0-53-copper-equivalent-at-andong-bor-cambodia.

Current analysis has revealed crucial structural relationships previously unidentified in earlier drilling campaigns. The contacts between intrusive rock and host sedimentary rock were not properly revealed in previous drilling (ADBDH16-005, -006, -007, -008) because all contacts were faulted or there was poor core recovery at those sites. This new understanding represents a fundamental shift in the geological interpretation of the Andong Bor property.

Ouellette summarized the key findings, noting that the best copper mineralization in Andong Bor diamond drill core is hosted by the sedimentary rocks rather than the intrusive formations. While the diorite feldspar porphyry intrusive rocks can host low-grade copper porphyry-style mineralization, assay values increase dramatically in proximity to highly reactive wallrock where intrusive rock is surrounded by sedimentary rock.

The geological team made additional significant observations about the structural characteristics of the mineralization. The contacts where sedimentary rock and intrusive rock meet are very steep, ranging from 70 to 80 degrees. Mineralization within the sediments occurs both as disseminated particles and along fractures parallel to these contacts, suggesting significant ground preparation prior to mineralization events. The sedimentary country rock was heavily fractured, allowing intrusion and mineralization events to follow pre-existing fracture patterns.

These geological insights have immediate practical implications for the company's exploration strategy. Understanding the fracture patterns and structural relationships enables more effective drill program design, which the company expects will result in both shallower and increased mineralized intercepts in future drilling campaigns. This represents a substantial improvement in exploration efficiency and target identification.

The current drill core from both 2025 holes is being logged in detail and cut for sampling purposes, with assays to be forwarded to ALS when all core cutting is completed. Plans for continuation of drilling extend into 2026, building on the enhanced geological understanding gained from this analysis. The company's approach demonstrates how detailed geological analysis can transform exploration effectiveness and resource identification in complex mineral systems.