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  • Individual rock sample mineral identification using X-ray diffraction (XRD). Start of data collection 40+ years. Individual X-ray diffraction (XRD) scans have been collected by various XRD machines. XRD analyses have been made on GNS owned instruments and by external instruments (e.g. Analyses has been collected using either Molybdenum or Copper K-alpha X-ray radiation sources. XRD analyses have been made on powdered rock samples and on clay separates (samples for which clays have been concentrated, extracted and mounted onto a slide prior analyses). For clay separates 2 scans are collected 1) air dry and 2) glycolated. The majority of geothermal XRD for the past 20 years (>90%) is on clay separates. Most XRD is for New Zealand projects. Small amount of overseas commercial XRD DOI: https://doi.org/10.21420/6A3N-4H62 Cite as: GNS Science. (1960). X-ray diffraction (XRD) data [Data set]. GNS Science. https://doi.org/10.21420/6A3N-4H62