Table 8 Zinc speciation, as a function of pH and log 
along the 0.01 ppm Zn isopleth of the model composite ore-brine at 100°Cab
along the 0.01 ppm Zn isopleth of the model composite ore-brine at 100°CabpH | log | Iron phasecsaturation | Cation | Chloride complexes | Sulfide complexes | Hydroxide complexes | Acetate complexes | Malonate complexes | Data set |
|---|---|---|---|---|---|---|---|---|---|
8.00 | -52.55 | Hm | 0.11 | 31.53 | 9.3 × 10-6 | 67.90 | 0.45 | 9.0 × 10-3 | 7 |
7.00 | -52.35 | Hm | 0.28 | 81.15 | 3.8 × 10-4 | 17.30 | 1.22 | 0.02 | 6 |
6.00 | -52.30 | Py | 0.34 | 96.19 | 0.03 | 2.07 | 1.33 | 0.03 | 5 |
4.75 | -52.90 | Py | 0.04 | 12.36 | 87.48 | 0.02 | 0.10 | 2.5 × 10-3 | 4 |
5.78 | -54.00 | Py | 3.9 × 10-4 | 0.11 | 99.89 | 1.4 × 10-3 | 1.5 × 10-3 | 3.0 × 10-5 | 3 |
6.40 | -55.00 | Py | 2.4 × 10-5 | 6.7 × 10-3 | 99.99 | 3.6 × 10-4 | 9.6 × 10-5 | 1.9 × 10-6 | 2 |
6.50 | -56.00 | Py | 1.7 × 10-5 | 4.8 × 10-3 | 99.99 | 3.2 × 10-4 | 6.9 × 10-5 | 1.4 × 10-6 | 1 |