Read the full paper presented at World Gold 2025 in Denver — a detailed technical review of Ravenswood Gold Mine’s transition to PhotonAssay™, including feasibility study data, precision comparisons against fire assay, and operational outcomes across grade control, exploration and metallurgical processing.
PDF · 8 pages · 628KB
Fill in a quick form to access the full document.
Ravenswood Gold Mine’s transition from fire assay, PAL and aqua regia digestion to onsite PhotonAssay™ in 2022
Feasibility study results comparing PhotonAssay™ and fire assay across 280 samples, including grade control, drill core and metallurgical process samples
Precision performance data: PhotonAssay™ achieved 21.3% precision at 0.1–1 g/t Au versus 35.7% for fire assay across the same grade range
Operational improvements including sub-24-hour turnaround for grade control and exploration samples, replacing both onsite PAL and an external fire assay laboratory
Enhanced QA/QC processes enabled by PhotonAssay™’s automated, non-destructive measurement workflow
Safety and ESG improvements through elimination of hazardous chemicals, reduced dust generation and removal of heavy grinding media handling
Related Resources
Deploying PhotonAssay™ on-site transformed grade control enabling near real-time decision making while increasing reconciliation.
The QA/QC processes that underpin every PhotonAssay™ result.
See which mining projects and companies around the world are using PhotonAssay™ data in their resource and reserve estimates and public disclosures.