403 Until a few years ago, the main "bottleneck" that prevented the implementation of a probabilistic GMBM was the lack of fast and cheap quantitative analytical methods. As already mentioned (Table 1), QEMSCAN/TESCAN analysis are very expensive, tedious and take several tens of minutes per sample; XRD mineralogical analysis are also expensive, although less so than QEMSCAN/TESCAN, depending on the angular range required to register and plot the respective diffractogram. Neither of these methods are sufficiently fast and cheap to implement a geometallurgical database, which normally requires thousands to tens of thousands of quantitative mineralogical analyses. Fortunately, today we already have alternatives, e.g. infrared spectrometric analysis (FTNIR), which can deliver cheap, semi-quantitative mineralogical analysis in only tens of seconds per sample. See chapter 3.2; fig 2 and Table 1. Figure 6 - Implementation phases of the Geo-Metallurgical Block Modell. After Canchaya (2008).
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