Understanding the mineralogy of the ore body is essential because this knowledge allows one to predict how a mineral will behave during processing. Modern process mineralogy techniques are applied using all available mineral and ore characterization techniques and instruments, with each technique building on the next ensuring that meaningful and accurate results are obtained. All process mineralogical testing begins by defining geometallurgical units. Lotter et al (2003) defined geometallurgical units as an ore type or group of ore types that encompasses a distinctive set of textural and compositional properties, which can be used to determine the processing behavior of similar units . These units are based on a review of geological data including host rock, alteration, grain size, texture, structural geology, grade, sulfide mineralogy and metal ratios, with emphasis on characteristics known to affect metallurgical performance (Lotter et al, 2003; 2011). .The next step is to ensure representative sampling such that meaningful diagnostics on unprocessed samples and/or samples extracted from the production concentrator are obtained. According to Lotter (2011), non-oxidized drill cores are the most representative of the geometulurgical unit from which they were extracted. This is a crucial step to ensure the accuracy of QEMSCAN and LMA data. Modern process mineralogy follows a defined strategy to ensure accurate and meaningful process mineralogy. mineralogical measurements are carried out. Development of a test method for characterizing ore during pre-f...... middle processing of paper. The QEMSCAN is equipped with theoretical compositions that do not take into account the heterogeneity between mineral phases. The theoretical compositions will suffice for all other quantitative measurements carried out by the QEMSCAN in addition to elementary behavior measurements. This shortcoming is overcome by using the precise compositional data that can be acquired from EMPA analysis. Information on the composition of individual mineral phases is added to QEMSCAN to refine the elemental behavior data. Microprobe composition data can also be used to update the species identification protocol (SIP file). All of the analytical instruments mentioned above all have their drawbacks, which are noted in Table 1, but combining these individual instruments in a methodical manner eliminates the majority of their individual limitations..