XRD - X-Ray Diffraction, where a sample is bombarded with x-rays and a scan of the sample is produced and analysed via Siroquant to obtain the mineralogical content of the sample. This technique is widely used throughout the world and has become essential in industry.
XRF - X-Ray Fluorescence, used where the elemental components of a substance are required and is highly effective in exploration applications as well as contamination problems eg arsenic and lead