Key Highlights

  • Field exploration has begun at the San Francisco Gold-Copper-Silver Project in San Juan Province, Argentina.
  • Historical diamond drill core at the Villa Nueva storage Facility was inspected and found to be in good condition.
  • Access to the San Francisco de los Andes breccia has been confirmed for mapping and fieldwork.
  • An expanded geological field team is scheduled to return the following week to assess priority targets.

Pioneer Minerals Limited (ASX:PMM) has reported that on-ground exploration has begun at its San Francisco Gold-Copper-Silver Project in San Juan Province, Argentina, in an announcement dated 4 November 2026. The initial reconnaissance was carried out by the in-country technical team Andes Exploration, and the company has outlined the next phase of field work.

Reconnaissance Findings

Geologists inspected outcrops, historical mine workings and existing drill core to inform the next stage of assessment for the San Francisco de los Andes breccia system. The work is intended to build on earlier geological and geochemical information.

Historical diamond drill core held at the Villa Nueva storage facility was inspected and found to be appropriately stored and in good condition. The company says this supports a planned systematic relogging program.

The inspection of the Villa Nueva core is a practical step ahead of relogging, since it confirms the material is available for re-examination. Relogging allows geologists to review the drill core against current interpretations, which can refine the understanding of the breccia system.

Access and Field Plans

Access to the San Francisco de los Andes breccia has been confirmed, providing a starting point for follow-up mapping and fieldwork. The company plans to assess priority targets identified from historical geological and geochemical data.

An expanded geological field team is scheduled to return the following week. The company notes that the timing of this work is subject to access and field conditions.

The company's field plans are conditional on access and field conditions, and the next team visit is scheduled for the following week. The priority targets will therefore be reviewed on the ground before the company decides on any geophysical surveys.

Geological Focus

Exploration is focused on the extent and continuity of known high-grade gold-copper-silver mineralisation within the San Francisco breccia pipe. The work also considers possible extensions at depth and additional mineralised breccia and vein systems across the broader project.

Field observations will inform the ongoing 3D geological interpretation and the evaluation of potential Geophysical surveys ahead of future exploration targeting.

The breccia pipe is the central target, and the company is assessing whether mineralisation extends at depth beneath the known zones. The release also mentions additional mineralised breccia and vein systems across the broader project, which may add to the exploration scope.

Historical Information and Field Plans

The company is using historical geological and geochemical information to set its priority targets. The release notes that the historical drill core is in good condition, which makes it useful for relogging and re-interpretation. The field plans are described as subject to access and field conditions, which is a common Factor in early-stage programs in remote areas. The company has not reported new assay results in this update, and its next data will come from the expanded field team.

Final Word

The announcement describes reconnaissance, access and planning rather than new assay results. The company's targets remain subject to access and field conditions, and the update does not report drilling or grade figures. Results from the expanded field program and any geophysical work will provide the next measurable data on the breccia system.