Practical Limits of Gold Detection by XRF
XRF identifies elements by measuring their characteristic fluorescent X-rays. For high-value materials, jewellery, alloys, and some concentrates, gold may be present at levels that are suitable for XRF measurement.
In mineral exploration and ore analysis, gold is often present at low parts-per-million or parts-per-billion levels. It may also occur as fine particles or nuggets, which creates a sampling problem. A reading taken on one small area may not represent the wider sample.
For this reason, XRF is often more useful for detecting associated or pathfinder elements than for confirming low-level gold grades directly. Gold analysis should be validated against laboratory methods where precise grade reporting, compliance, or resource decisions are required.
Assessing XRF for Gold-Related Testing
For more detail on the measurement principle, review PAS’s overview of X-Ray Fluorescence technology. To compare suitable instruments, explore PAS’s handheld XRF analysers through Portable Analytical Solutions, or get in touch to discuss gold, pathfinder elements, and sample preparation requirements.