Angkor Resources Corp. has reported significant copper mineralization results from its Thmei North prospect on the Andong Bor mineral exploration license in Cambodia. Diamond drill hole AB25-009 returned copper mineralization over the entire 286.2 meters sampled, with an overall average of 1,309 parts per million copper (0.13% Cu). The results are particularly notable as copper grades increased substantially at depth, with the bottom 67.3 meters averaging 2,181 ppm copper (0.22% Cu) and including a 52.6-meter interval grading 2,493 ppm copper (0.25% Cu).
The geological context reveals important insights about the mineralization system. The upper portion of the hole cored medium-grained diorite to a depth of 244.9 meters, containing small quartz veins with iron and copper minerals. At 244.9 meters, the drill hole crossed into hornfels, where the number of mineral-bearing veins increased significantly and copper content rose accordingly. Dennis Ouellette, VP Exploration, noted that the increase in copper grade as drilling moved deeper into the hornfels is particularly encouraging. The contact between the diorite and hornfels is very steep, indicating the diorite intruded along near-vertical structures that the mineralized quartz veins follow.
Ouellette explained that these results reinforce the company's view that the strongest mineralization is concentrated near or within the wall rock - the hornfels surrounding the diorite intrusions. He described the deposit as a hybrid system, what geologists call a porphyry copper-related skarn, where small bodies of diorite and feldspar porphyry dikes have intruded into highly receptive siltstone and volcaniclastic rocks. The hornfels shows potassic alteration, a strong indicator of being in the right area for copper porphyry systems. Early potassic alteration has been overprinted by later chlorite-sericite and phyllic alteration - an alteration sequence typical of copper porphyry systems.
The discovery has broader implications for Cambodia's mineral development. With relatively little drilling completed on this target, the company acknowledges being in early stages of understanding the full picture. A second drill hole, AB25-010, was started on July 20, 2025, but was halted due to the Cambodia-Thailand border conflict in the northwest region. Safety of staff remains the company's top priority, and activities on the Andong Bor license are on hold until conditions allow safe resumption. The company will assist year-five students at the Cambodian Institute of Technology in a study of historical drill hole ABDDH16-006, providing additional data on the copper potential of the Thmei area and advancing the education of Cambodia's future geologists.
This discovery matters because it demonstrates Cambodia's emerging mineral potential at a time when global copper demand continues to grow for renewable energy infrastructure and electrification. The presence of continuous mineralization over nearly 300 meters with increasing grades at depth suggests a substantial mineralized system that could contribute to regional economic development. For investors and the mining industry, these results from a relatively underexplored region highlight new opportunities beyond traditional mining jurisdictions. The technical characteristics described - including the porphyry copper-related skarn system and typical alteration patterns - suggest geological similarities to productive copper districts elsewhere in Southeast Asia. View the original release on https://www.newmediawire.com for complete details.
