Angkor Resources Advances Analysis of Andong Bor Drill Core with New Geological Findings

Angkor Resources Corp. has announced further analysis, assays, and conclusions from drill core examination at the Andong Bor license in Oddar Meanchey, Cambodia. Dennis Ouellette, VP Exploration for Angkor, along with associate geologists, has reviewed both historical drilling core and the most recently drilled holes from 2025, specifically ABDDH25-009 and ABDDH25-010. The two new holes, with hole 009 being substantially deeper, contained sections of drill core from approximately 245 metres to 316 metres where mineralization with abundant pyrite and chalcopyrite was observed.

The current analysis builds upon previous work conducted in late 2022, which was based solely on core drilled by a different company as detailed in the press release available at https://www.angkorresources.com/news/angkor-confirms-108-metres-of-0-53-copper-equivalent-at-andong-bor-cambodia. The 2025 drill core from both holes is being logged in detail and cut for sampling purposes, with further conclusions indicating that the structural relationship between intrusive rock and host sedimentary rock was not fully revealed in previous drilling campaigns.

Ouellette summarized the key findings, stating that the best copper mineralization in Andong Bor diamond drill core is hosted by sedimentary rocks rather than intrusive formations. While 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 contacts where sedimentary rock and intrusive rock meet are very steep, ranging from 70 to 80 degrees, with mineralization within sediments occurring both as disseminated particles and along fractures parallel to these contacts.

This geological configuration implies significant ground preparation, likely involving magma or similar catalysts, prior to mineralization events. The sedimentary country rock was heavily fractured, allowing intrusion and mineralization events to follow pre-existing fracture patterns. Understanding these geological relationships directly impacts the design of the continuation drill program, with expectations of achieving both shallower and increased mineralized intercepts in future drilling campaigns. Assays will be forwarded to ALS laboratory when all core cutting is completed, with plans for continued drilling extending into 2026 based on these new geological insights.