Exploration

Additional Cross Sections for Exploration Update

Ghana is currently the largest gold producer on the African continent and as such plays host to a number of globally important gold belts and their associated deposits. The Asankrangwa gold belt is located within the Kumasi basin which is dominated by Palaeoproterozoic metasedimentary and metavolcanic rocks. The belt itself is approximately 200km long and 20km wide and contains numerous significant gold deposits and occurrences. The Asanko Gold Mine holds the largest land package within the belt, with approximately 21,000 hectares of tenure (see figure 1) on this highly prospective and under-explored portion of central Ghana.

Exploration at the AGM is focussed on two priorities:

  • Increasing Reserves and Resources at the known deposits.
  • Delivering discovery of new deposits within the and beyond the existing AGM tenements.

Near Mine

Abore- Multiple Drill Programs in 2025

  • First deep drill test program confirmed the Abore granite and mineralizing system continues 200m below the current Mineral Reserve pit shell over a strike length of at least 1,200m and remains open in all directions, with all four holes drilled intercepting mineralized granite Notably, the system appears to carry grades and widths at these depths sufficient to support the potential development of bulk underground mining. Intercepts included:
    • Hole ABDD25-350: 36m @ 2.5 g/t Au from 370m including 22 meters @ 3.8 g/t Au 
    • Hole ABPC25-356: 16m @ 3.1 g/t Au from 412m and 5m @ 2.3 g/t Au from 433m
    Further details can be found in the press release "Galiano Gold Announces Positive Initial Deep Drilling Results At Abore Including 36m @ 2.5 G/T Au," dated Jul. 14, 2025.
  • Phase 1 infill drilling in Q1 2025 resulted in discovery of a new high grade zone at Abore main pit and doubled the strike length of the known south high grade zone from 90m to 180m. Highlighted intercepts include:
    • Hole ABPC25-346: 50m @ 3.2 g/t Au (Discovery hole for new high grade zone)
    • Hole ABPC25-315: 34m @ 12.0 g/t Au from 192m and 11m @ 7.2 g/t Au from 239m 
    • Hole ABPC25-316: 27m @ 6.7 g/t Au from 183m
    • Hole ABPC25-317: 41m @ 3.0 g/t Au from 202m
    • Hole ABPC25-325: 38m @ 6.7 g/t Au from 195m
  • Further details can be found in the press release "Galiano Gold Announces Discovery Of New High-Grade Zone At Abore With Intercept Of 50m @ 3.2 G/T Au & Results Of Infill Drilling Program," dated May 5, 2025.
  • Phase 2 drilling at Abore underway in Q2 2025 testing for continuations of mineralization immediately below the Abore Mineral Resource. First results returned excellent results with the discovery of a new high grade zone under Abore north pit and identification of multiple high grade ore shoots at Abore main pit and Abore south pit. Highlighted intercepts include:
    • Hole ABDD25-388: 23m @ 6.8 g/t Au from 240m
    • Hole ABDD25-384: 16.4m @ 5.3 g/t Au from 189m
    • Hole ABDD25-354: 17.5m @ 3.0 g/t Au from 241m
    • Hole ABPC25-361: 19.9m @ 2.3 g/t Au from 215m
    • Hole ABPC25-371: 29.7m @ 2.9 g/t Au from 209m
    • Hole ABDD25-374: 46m @ 1.7 g/t Au from 225m, including 13m @ 2.8 g/t Au
    • Hole ABDD25-376: 40m @ 2.1 g/t Au from 208m, including 12m @ 3.8 g/t Au
    • Hole ABDD25-377: 34m @ 1.6 g/t Au from 210m, including 8m @ 3.7 g/t Au
    • Hole ABDD25-379: 30m @ 1.3 g/t Au from 233m, including 5m @ 3.2 g/t Au
  • Further details can be found in the press release "Galiano gold reports exceptional drill results at Abore, including 23m @ 6.8 g/t Au and 16.4m @ 5.3 g/t Au, with multiple ore shoots and new high-grade zone identified," dated Aug. 20, 2025. View additional cross sections not shown in the press release in the Additional Cross Sections for Exploration Update , dated Aug. 20, 2025.

Regional

  • Drilling was completed at Akoma target in Q1 2025. The overall drill program delivered encouraging results with multiple mineralized intercepts including 16m@ 3.57 g/t Au and 4m @ 31.57g/t Au hosted in quartz shear veins.
  • Drilling at the SkyGold B target, designed to test the highest priority areas of the approximately 4 km long gold-in-soil anomaly, began in August 2024 and identified a large regional scale shear zone with an active gold mineralizing system over a length of at least 4km. Best results include 15.8m @ 1.1 g/t Au, 3m @5.1 g/t Au, 11.7m @ 0.7 g/t Au and 21m @ 0.5 g/t Au. A follow-up ground Induced Polarization survey was completed in Q2 2025 and has shown that the orientation of the underlying geology requires a reinterpretation that may lead to additional follow-up drill targets.
  • Property wide mapping, prospecting and geophysical surveying continues to identify numerous new greenfields targets which are being actively advanced through the exploration pipeline.
Ghana map

Regional Geology

The geology of the Asankrangwa Belt comprises strongly deformed Birimian meta-sediments, with minor granitic intrusions and mafic igneous rocks. The lithological units are cut by steeply north-west dipping primary and secondary structures. It is this combination of structural architecture and permissive lithologies that have been important in the localization of gold mineralization and provides the capacity for enhanced fluid flow forming major alteration systems associated with the gold bearing systems. The gold mineralization is linked to at least two separate deformation events and fluid emplacement, with many similarities to the gold deposits on the adjacent Sefwi and Ashanti Greenstone Belts.

Much of the Asankrangwa belt geological understanding and prospectivity mapping comes from a combination of airborne geophysical surveys such as VTEM and magnetics, and the wealth of accumulated geochemical and geological data. These datasets have allowed the company to develop our current pipeline of exploration targets.