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HomeMiningMetallurgy & Process DesignHigh Definition MineralogyX-Ray Diffraction (XRD)
In the past, XRD was typically used to determine bulk mineral assemblages in rocks, clays, ores, particulates and metallurgical products. It provides a semi-quantitative method for determining the normative or weight percentages of the phases present, including the fraction of each mineral phase that occurs in your samples.
Now, with the use of Rietveld (RIR analysis) quantification methods and powerful computers, quantitative XRD data can be obtained. Modern high-speed detectors allow rapid data collection on large numbers of samples and whole pattern cluster analysis is used to differentiate sample populations.
SGS uses powder diffractometers, modern computer software and an extensive mineral database to identify the experimental diffraction patterns collected from the samples.
For standard XRD analysis, sample preparation is routine and data is acquired efficiently and accurately. XRD analysis is performed on a pulverized sample and it is an easy way to obtain mineralogical data for chemical analysis.
All phases identified by XRD analysis are reported and grouped into major (>30%), moderate (10-30%), minor (2-10%) and trace (<2%) amounts. Identification and classification of abundance are based on relative peak heights and mineral crystalline structure.
All minerals identified by X-ray Diffraction analysis are reported and grouped into major (>30%), moderate (10-30%), minor (2-10%) and trace (<2%) amounts. In addition, mineral abundances (in weight %) generated by RIR (or Rietveld) XRD analysis are reconciled with a whole rock analysis and reported.
XRD can determine the specific mineral phases present in a sample. SGS provides specialized speciation analysis to determine:
Systems such as XRD are mere tools – High Definition Mineralogy is the product. SGS is the industry leader in High Definition Mineralogy for the global minerals industry and other market sectors that need detailed material, product or residue characterizations. SGS mineralogy experts ensure a quality product and, from grassroots exploration to production support, provide significant interpretive value.