397 Table 1 – Comparison between the most common methods of mineralogical characterization Method Results Unit cost US$ x(2,5) Execution time per sample Execution of 5,000 samples FTNIR Spectrometry Adjusted semiquantitative “bulk” mineralogical analysis X Tens of seconds 7 days Figure 2 – FTNIR semi-quantitative mineralogical analysis.- A: Fourier Transform Infrared Spectrometer (FTNIR), model Matrix. B: Example of calibration curve for FeS2 using DRX as primary analysis. C: Example of calibration curve for swelling clays using Cation Exchange Capacity (CEC) as primary analysis. D: Example of a results chart showing percentages of different minerals.
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