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Synchrotron XFM and XANES Mapping of Visible and Invisible Gold in Polymetallic Legacy Tailings for Resource Valorisation (2026)

Abstract

This project uses advanced X-ray techniques at the Australian Synchrotron to map how gold occurs in historic mine waste from Queensland. The aim is to identify both visible gold and ¿invisible¿ gold locked within minerals, which is difficult to detect using conventional methods. By understanding where and how gold is hosted, the study will help design more efficient and environmentally responsible recovery strategies. Expected outcomes include improved resource recovery from existing waste, reduced environmental risks such as acid mine drainage, and new opportunities to extract valuable metals and sulphuric acid for use in the mining industry and agriculture.

Experts

Dr Steve Chingwaru

Affiliate of W.H. Bryan Mining and Geology Research Centre
WH Bryan Mining Geology Research Centre
Faculty of Engineering, Architecture and Information Technology
Postdoctoral Research Fellow
Sustainable Minerals Institute
Faculty of Engineering, Architecture and Information Technology
Steve Chingwaru

Dr Olivia Mejías González

Affiliate Research Fellow of School of Civil Engineering
School of Civil Engineering
Faculty of Engineering, Architecture and Information Technology
Research Fellow
Sustainable Minerals Institute
Faculty of Engineering, Architecture and Information Technology
Affiliate of W.H. Bryan Mining and Geology Research Centre
WH Bryan Mining Geology Research Centre
Faculty of Engineering, Architecture and Information Technology
Olivia Mejías González
Olivia Mejías González