How Golden State Mining’s New Survey Could Unlock Southern Cross East Gold Potential

Golden State Mining has completed a detailed aeromagnetic survey over its Southern Cross East gold project, aiming to refine geological targets following promising initial drilling results. The data interpretation, expected by December 2025, could unlock new exploration opportunities in this complex greenstone terrain.

  • Completion of 3,053 line km aeromagnetic survey at 100m spacing
  • Survey flown by Magspec Airborne Surveys in September 2025
  • Data processing underway with interpretation due by December 2025
  • Survey designed to refine drill targets after Phase 1 air-core drilling
  • Focus on structurally complex Southern Cross East greenstone terrain
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Survey Completion Marks Key Step in Exploration

Golden State Mining Limited (ASX, GSM) has announced the successful completion of a high-resolution aeromagnetic survey over its Southern Cross East gold project. Conducted in September 2025 by Magspec Airborne Surveys, the survey covered 3,053 line kilometres with a finely tuned 100-metre line spacing. This marks a significant advancement in the company’s exploration efforts following encouraging Phase 1 air-core drilling results earlier this year.

Enhancing Geological Understanding

The aeromagnetic survey is designed to provide a detailed picture of the subsurface geology, particularly the subtle structural features and magnetic domains that can indicate gold mineralisation. Southern Cross East lies within a structurally complex greenstone belt, where understanding the intricate geology is critical to identifying high-potential drill targets. The survey’s technical parameters balance high data resolution with cost efficiency, reflecting GSM’s prudent capital management approach.

Next Steps, Data Interpretation and Target Generation

Currently, the collected data is undergoing processing and quality verification, with interpretation and target generation scheduled for completion by December 2025. Golden State Mining’s Managing Director, Michael Moore, highlighted the importance of this phase, noting that the new aeromagnetic data will help unlock the broader potential of the project and guide future drilling campaigns. The company’s previous air-core drilling confirmed gold anomalism but also revealed geological complexity, underscoring the value of this detailed geophysical survey.

Strategic Implications for Shareholders

This survey represents a critical step in GSM’s strategy to advance its Southern Cross East project from early-stage exploration towards resource definition. By refining drill targets with enhanced geological insights, the company aims to maximise the efficiency and impact of its exploration budget. Investors will be watching closely for the upcoming interpretation results, which could shape the next phase of drilling and potentially elevate the project’s value proposition.

Bottom Line?

The December interpretation results will be pivotal in shaping Golden State Mining’s exploration trajectory at Southern Cross East.

Questions in the middle?

  • What specific structural features will the aeromagnetic data reveal to refine drill targets?
  • How might the new data influence the scale and focus of upcoming drilling programs?
  • Could the survey results materially change the project’s resource potential or valuation?