# Erdene Intersects 30 Metres of 1.25% Copper in Khuvyn Khar Porphyry System *2026-01-14T07:30:00-05:00* Erdene Intersects 30 Metres of 1.25% Copper in Khuvyn Khar Porphyry System **Highlights:** - Intersected 65 metres averaging 0.63% copper (“Cu”) and 2.9 g/t silver (“Ag”) mineralization, including 30 metres averaging 1.25% Cu and 6.1 g/t Ag - Mineralized zone extends from 238 meters downhole, ending in mineralization at 450 metres, characterized by moderate to intense potassic alteration with associated copper mineralization - Hole is three kilometres from the Zuun Mod molybdenum-copper deposit and interpreted to be part of the same porphyry system - Located on a wholly owned mining license 35 kilometres east of the Bayan Khundii Gold Mine in southwest Mongolia, approximately 200 kilometres from China - Further exploration planned in 2026 to test the potential of the Khuvyn Khar copper porphyry system at depth HALIFAX, Nova Scotia, Jan. 14, 2026 (GLOBE NEWSWIRE) -- Erdene Resource Development Corporation (TSX: ERD | OTC: ERDCF | MSE: ERDN) (“Erdene” or the “Company”) is pleased to announce results from drilling at its wholly owned Khuvyn Khar copper-silver prospect, located three kilometres northwest of the Zuun Mod (“ZM”) deposit and 35 kilometres east of the Bayan Khundii Gold Mine, in the Khundii Minerals District in southwestern Mongolia (See Figures 1 and 2). **Quotes from the Company** Peter Akerley, Erdene’s President and CEO stated, “Today’s drill results confirm a substantial copper component to the Khuvyn Khar porphyry system beyond the molybdenum-copper deposit defined at the nearby Zuun Mod project. This copper mineralized zone is characteristic of the upper levels of a copper porphyry system.” Mr. Akerley continued, “Khuvyn Khar and Zuun Mod are located approximately 200 kilometers from China, the world’s largest copper and molybdenum consumer. The Khuvyn Khar license lies within a region in Mongolia that has seen significant recent infrastructure investments, supporting development of large-scale projects in the Khundii Minerals District.” Mr. Akerley concluded, “With the Bayan Khundii gold mine in production, we are now expanding our exploration efforts in the Khundii Minerals District. Advanced geophysical surveys and drilling are planned for 2026 to follow up on today’s exciting results from Khuvyn Khar. Concurrently exploration is underway to expand gold resources near the Bayan Khundii mine operated in a strategic alliance with Mongolian Mining Corporation (“MMC”).” **Khuvyn Khar & Zuun Mod Drill Program – Q4 2025 ** A 3,362-metre, 24-hole drill program was recently completed on the wholly-owned Khuvyn Khar license, which hosts the Khuvyn Khar copper porphyry system, including the Zuun Mod molybdenum-copper deposit. The program included 18 holes testing the upper 150 metres of the Zuun Mod deposit, and one hole extension, seeking to improve confidence and continuity of ore grade molybdenum (“Mo”) mineralization. A further three scout holes were drilled to follow-up on a new gold zone on the license, 3.8 kilometres west of the Zuun Mod deposit, and two holes were drilled to test copper porphyry targets, including ZMD-162. With the exception of ZMD-162, reporting of assay results is pending. Results for the Zuun Mod deposit drilling will be incorporated into a preliminary economic assessment, scheduled to be delivered in mid-2026. Today’s release highlights exploration hole ZMD-162 in the Khuvyn Khar (“KK”) copper target, three kilometres northwest of the Zuun Mod deposit (See Figure 3). ZMD-162 follows up on a high-grade copper intersection, ZMD-121, which intersected 34 meters of 1.3% copper and 9.2 g/t silver starting at 308 metres, completed in December 2010. Khuvyn Khar exhibits the characteristics of a copper (“Cu”) porphyry system including alteration assemblages, vein types and Cu-Mo ratios. The Zuun Mod Cu-Mo deposit is interpreted as a molybdenum rich zone within this large copper porphyry system. Exploration to date on the copper-rich portion of the system has intersected anomalous copper mineralization over an expansive area, characterized by the following: - The KK copper porphyry system covers approximately 20 square kilometers; - The system is fertile for copper, molybdenum and silver mineralization (possibly gold, as demonstrated by anomalous gold mineralization identified along the periphery of the surface alteration zone); - The interpreted level of erosion of the KK porphyry system, an important factor in older porphyry systems like KK, is such that the core of the system is expected to be preserved; - High-grade copper mineralization has been intersected, including in ZMD-162, as reported in this release and ZMD-121; - Large areas of the system remain untested by drilling and no part of the Khuvyn Khar copper prospect has been tested below 500 metres depth (See Figures 3 and 4); - Average drilling depth at the Zuun Mod Mo-Cu deposit is 370 metres with a single hole in