Research Article
The Fe-Zn Isotopic Characteristics and Fractionation Models: Implications for the Genesis of the Zhaxikang Sb-Pb-Zn-Ag Deposit in Southern Tibet
Table 1
EPMA data for Mn-Fe carbonate and quartz from the Zhaxikang deposit.
| Sample number | SiO2 (%) | Na2O (%) | K2O (%) | TiO2 (%) | Al2O3 (%) | MgO (%) | CaO (%) | FeO (%) | MnO (%) | SrO (%) | BaO (%) | CO2 (%) | Total (%) | Mineral |
| 9-3-4 | 0.015 | 0.005 | 0.007 | 0.011 | 0.003 | 1.231 | 2.061 | 28.598 | 29.840 | 0.007 | 0.057 | 38.164 | 99.999 | Mcar | 9-3-5 | 0.024 | 0.109 | 0.027 | – | 0.010 | 1.080 | 2.151 | 28.372 | 30.582 | – | 0.002 | 37.643 | 100.000 | Mcar | 9-8-8 | 0.002 | 0.031 | 0.007 | – | – | 1.276 | 1.978 | 27.341 | 31.338 | 0.010 | 0.022 | 37.993 | 99.998 | Mcar | 9-8-9 | – | 0.025 | – | – | 0.008 | 1.189 | 1.144 | 31.806 | 27.514 | – | – | 38.316 | 100.002 | Mcar | ZXK-1-6 | 0.001 | 0.028 | 0.001 | 0.022 | – | 1.207 | 5.178 | 24.070 | 30.717 | – | – | 38.775 | 99.999 | Mcar | ZXK-1-7 | 0.028 | 0.011 | 0.019 | 0.036 | 0.014 | 1.995 | 2.940 | 29.639 | 27.943 | – | 0.017 | 37.358 | 100.000 | Mcar | ZXK-2-7 | 0.005 | 0.039 | – | 0.055 | – | 1.236 | 5.542 | 27.235 | 27.604 | – | – | 38.285 | 100.001 | Mcar | ZXK-2-8 | – | 0.051 | – | 0.012 | 0.010 | 1.140 | 4.298 | 24.287 | 32.694 | – | 0.008 | 37.500 | 100.000 | Mcar | ZXK-2-9 | 0.009 | 0.049 | 0.008 | – | 0.037 | 1.552 | 1.946 | 26.739 | 30.968 | 0.007 | 0.013 | 38.673 | 100.001 | Mcar | ZXK-2-10 | 0.015 | – | – | 0.023 | 0.012 | 1.119 | 4.849 | 23.562 | 32.232 | – | 0.003 | 38.185 | 100.000 | Mcar | ZXK-2-11 | 97.000 | 0.026 | 0.025 | – | 0.219 | 0.028 | 0.018 | 0.020 | — | – | – | 2.664 | 100.000 | Qtz |
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Notes. (1) Mcar = Mn-Fe carbonate; Qtz = quartz; (2) for the sampling points, please see Figure 5. |