Table 3.

X-ray fluorescence (XRF) analyses

SampleRock mass weathering grade*Weathering zoneElements (%)
SiCaFeAlKMgSClZrSrTi
KK650IV40.391.261.192.520.750.180.020.010.01<0.010.12
KK830IV39.591.261.393.461.730.420.080.010.01<0.010.13
KK560IV44.110.020.962.440.800.24n.d.§0.020.02<0.010.16
KK781III40.860.031.432.930.910.310.030.040.01<0.010.13
KK861III37.910.041.483.631.150.470.040.030.01<0.010.18
KK81a2II33.610.191.623.581.460.501.090.040.01<0.010.15
KK392III36.370.030.993.091.080.290.080.040.01<0.010.13
KK882III37.320.061.083.541.450.330.220.040.01<0.010.13
KK81b2II34.730.082.533.921.390.400.150.050.01<0.010.15
KK153II36.310.041.754.481.170.520.080.060.01<0.010.15
R13I31.960.102.864.871.500.460.250.060.01<0.010.16
R463I35.89n.d.0.803.681.190.20<0.010.020.01<0.010.16
  • Notes: *Rock mass weathering grades follow Table 2.

  • Weathering zones based on Figure 4.

  • Calculated as SiO2 (quartz); total quartz content ranges between 68 and 94%.

  • § n.d. = not detected.