ALPHA EXPLORATION

The Anagulu Porphyry Cu–Au Prospect is an early-stage but increasingly significant copper-gold porphyry discovery located within the Kerkasha Project in western Eritrea and owned 100% by Alpha Exploration Ltd.  It lies within the highly prospective Arabian–Nubian Shield, a Neoproterozoic metallogenic belt that hosts significant gold and copper deposits across northeast Africa and the Arabian Peninsula, including Jebel (Sudan) and Daero Paulos (Eritrea).

Cu-Au mineralization at Kerkasha is hosted within altered intrusive rocks and surrounding volcanic–sedimentary sequences. Anagulu is considered a classic porphyry Cu–Au system, centered on a dyke-like porphyry intrusion. Work by world-renowned porphyry expert Dr. Richard Sillitoe concluded that Anagulu is “undoubtedly a porphyry gold-copper system”. He further noted that higher-grade mineralization appears concentrated in sheeted quartz vein zones along the upper eastern margin of the intrusion.

Additional targets south of current drilling remain underexplored. A recent study dated the mineralization-related intrusion at approximately 815 Ma (Neoproterozoic) and interpreted it as a water-rich, oxidized arc magma, conditions commonly associated with fertile porphyry Cu systems.

Work by Alpha has defined a large Au and Cu soil and rock geochemical anomaly exceeding 2 km strike length with coincident IP chargeability and resistivity anomalies extending up to ~3.5 km. Multiple zones remain open laterally and at depth, with drilling only partially testing the system.

Drilling by Alpha has intersected broad intervals of porphyry-style mineralization, including:

• Discovery hole AND001 – 108m @ 1.24 g/t Au and 0.60% Cu from 60 m, including 49m @ 2.33 g/t Au and 1.05% Cu
• ANR033 – 95 m @ 0.65 g/t Au and 0.42% Cu
• ANRD031 – 63.7 m @ 0.94 g/t Au and 0.48% Cu
• ANDDo49 – 120m @ 0.47 g/t Au

Alpha’s press release of June 24, 2026 reported further results from shallow Rotary Air Blast (RAB) drilling at Anagulu.   To date, results are now available for 4,738m of drilling. The RAB drilling program is designed to expand and further define the target footprint of the Anagulu Cu-Au porphyry system where it is concealed under immature soil cover. Results reported in this press release relate to 2,609m in 335 holes with an average depth of 7.8m in the ongoing program.

Highlights from the RAB drilling program reported are as follows:

• Shallow RAB drilling outlines the new Nightjar Target Zone measuring ~1 km along trend and 125-150m in width with top of bedrock samples ranging from 3,390 parts per million (ppm) (0.33%) to 310 ppm Cu.  The Nightjar Target Zone is located ~2 km northeast of the main area of drilled porphyry copper-gold mineralization, near a magmatic-hydrothermal breccia, and could represent a second intrusive porphyry centre
• Camel Target Zone has been expanded and defined to over 1 km along trend and 125-250 metres in width, with top of bedrock copper samples in RAB Area 5, ranging from 3,274 ppm (0.33%) to 300 ppm Cu. The width and grade of the Camel Target increase to the southwest and overall appear to have higher copper values than the comparable Discovery target zone based on the RAB sample results.
• The Camel Target remains open to the southwest where RAB drilling is ongoing in an area with anomalous termite mound sampling results.

Alpha continues to expand the potential footprint of the porphyry Cu-Au system at Angula, which significantly expands its resource potential (Figure 1).  The new zones discovered will be followed up with reverse circulation and core drilling.

Figure 1
Source: Alpha Exploration

Map Showing New and Expanded RAB Drilling Target Zones, Termite Mound Sampling Results, with Previous Reported Selected Drilling Results  (Alpha Minerals Press Release June 24, 2026).