Rapid measurement of calcite concentration in copper ore using fluorescence spectroscopy

Calibration models were adjusted via the correlation coefficient for validation (Rv2) and the error of prediction (RMSEP). Correlations higher than 0.92 were achieved for Rv2. These results show the potential of the technique for portable or on-line estimation of calcite concentration in mining processes. Its performance under different granulometries is also addressed, showing the best performance for particle size between 0.01 and 0.04 mm.