Highlights

  • El Dorado commissioned an approximately 2,440 line-km airborne magnetic survey across Oko North and Oko South.
  • The company will examine structures along the corridor hosting the approximately 9.3Moz Oko gold system.
  • Its airborne program complements an ongoing 5,000-point soil geochemistry campaign across the projects.
  • The team targets magnetic Acquisition during the current quarter before integrating results to rank drill prospects.

El Dorado Goldfields Ltd (ASX:EDO) is sharpening its search for drill-ready gold targets in Guyana after commissioning an ultra-high-resolution airborne magnetic survey across Oko North and Oko South. The work focuses on structural features along the same geological corridor as the approximately 9.3Moz Oko gold system, bringing magnetic mapping and soil geochemistry together ahead of planned trenching and maiden drilling.

The Survey Designed to See Beneath Cover

The fixed-wing campaign comprises approximately 2,439 line-km of planned flying, split between about 1,509 line-km at Oko South and 930 line-km at Oko North. North–south traverse lines are spaced 100 metres apart, with aircraft operating at a nominal height of approximately 80 metres. The close flight spacing is intended to provide a detailed magnetic picture of shear zones, faults and geological contacts. Those features matter because gold in the Oko corridor is structurally controlled, while deep weathering and surface cover complicate direct observation of the underlying geology.

A Coordinated Campaign Across Both Blocks

Flight planning is complete, and acquisition has been targeted for the December 2026 quarter. The work forms part of Guyana’s national airborne geophysics program, giving the company access to established aircraft, crews and technical infrastructure rather than arranging a standalone operation. Xcalibur Smart Mapping, Aries Aviation Services and Aqua Geo Frameworks have roles covering acquisition, aviation services and technical oversight. El Dorado owns its survey data, while government agencies retain a confidential archival copy.

Soil Geochemistry Adds a Second Layer

The geophysical campaign runs alongside a 5,000-sample soil geochemistry program. Soil results can identify anomalous areas near the surface; magnetic mapping can help connect those observations with concealed geological structures. The company intends to interpret both datasets together so that target selection reflects multiple lines of exploration evidence. Rather than treating individual anomalies as confirmed discoveries, the work will rank priority areas for field follow-up, trenching and initial drilling.

Where Exploration Goes Next

Survey information is expected to become available for interpretation in the coming months. Once acquisition and processing are completed, geological interpretation can focus on potential structural intersections and continuity across Oko North and Oko South. The projects remain exploration-stage assets, and proximity to the Oko gold system does not establish a mineral resource on El Dorado’s ground. The immediate milestone is a clearer inventory of targets that can guide the next field campaign.