5
Figure 7. Whole rock geochemical data from Black Hawk mine waste, showing As
concentration (ppm) versus Cu concentration (ppm).
Figure 8. Whole rock geochemical data from Black Hawk mine waste, showing Ta
concentration (ppm) versus Te concentration (ppm)
Figure 9. Whole rock geochemical data from Black Hawk mine waste, showing Cd
concentration (ppm) versus Zn concentration (ppm)