Mantle Volatiles and Heat Contributions to the Cu-Pb-Zn Mineralization in the Baoshan Deposit, South China: Constraints from He and Ar Isotopes
Abstract
:1. Introduction
2. Geological Settings
3. Sampling and Analytical Methods
4. Results
5. Discussion
5.1. Post-Entrapment Modification of Fluid Inclusions
5.2. Sources of He, Ar, and S
5.3. Helium and Heat
5.4. Implications for the Cu-Pb-Zn Mineralization
Deposit | 3He/4He (Ra) | 40Ar/36Ar | References |
---|---|---|---|
Granite-related W-Sn deposits | |||
Yaogangxian W deposit | 0.41–3.03 | 328–1191 | [26] |
Furong Sn deposit | 0.13–2.95 | [13] | |
Xintianling W deposit | 4.08 | 342 | [37] |
Shizhuyuan W-Sn-Bi-Mo deposit | 0.06–1.66 | 293–1072 | [35] |
Xitian W-Sn deposit | 1.15–4.43 | 288–325 | [92] |
Xianghualing Sn deposit | 1.84 | 326 | [92] |
Piaotang W-Sn deposit | 0.17–0.86 | 355–591 | [93] |
Yaoling-Meiziwo W deposit | 0.0043–4.36 | 330–2953 | [36] |
Dachang Sn deposit | 0.7–2.9 | 310–446 | [94,95] |
Granite-related Cu-Pb-Zn deposits | |||
Baoshan Cu-Pb-Zn deposit | 0.04–1.51 | 303–596 | This study |
Shuikoushan Pb-Zn-Au deposit | 0.01–2.93 | 298–382 | [43] |
6. Conclusions
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Sample No. | Minerals | Sections | Sample Type | Mineralogical Characteristics |
---|---|---|---|---|
BS-7 | Sp | −190 m | Pb-Zn ores | Massive structure, fine-grained pyrite accompanied by brownish sphalerite and calcite. |
BS-11 | Py | −190 m | Pyrite ores | Massive structure, abundant cubic pyrite accompanied by calcite and violet fluorite in the skarn. |
BS-12 | Sp | −190 m | Pb-Zn ores | Massive structure, abundant coarse-grained brownish sphalerite with minor galena and fine-grained pyrite. |
BS-13 | Py | −150 m | Pyrite ores | Massive structure, abundant coarse-grained and cubic pyrite with minor calcite. |
BS-15 | Py | −150 m | Pyrite ores | Massive structure, abundant coarse-grained and cubic pyrite with minor calcite. |
BS-18 | Py | −150 m | Pyrite ores | Massive structure, fine-grained pyrite accompanied by violet fluorite and calcite, also cut by veined calcite. |
BS-25 | Py | −150 m | Pb-Zn ores | Massive structure, fine-grained pyrite with fine-grained sphalerite. |
Sample | Mineral | Weight (g) 1 | 4He (10−7 cm3 STP) | 40Ar (10−7 cm3 STP) | 3He/4He (Ra) | 40Ar/36Ar | 3He/36Ar (10−5) | 40Ar*/4He (10−3) | 4He (cm3 STP g−1) | 40Ar (cm3 STP g−1) | F4He 2 | 40Ar* % 3 | Hemantle (%) | 3He/Q (10−12 cm3 STP J−1) 4 | δ34S (‰) |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
BS-7 | Sp | 0.24 | 2.04 ± 0.04 | 3.02 ± 0.05 | 0.65 ± 0.02 | 308 ± 7 | 18.71 ± 0.60 | 46.5 ± 0.68 | 8.61 × 10−6 | 1.28 × 10−6 | 1256 | 4.1 | 10.6 | 0.217 | 4.37 |
BS-11 | Py | 0.20 | 8.08 ± 0.17 | 0.37 ± 0.01 | 0.25 ± 0.01 | 596 ± 34 | 440.41 ± 26.9 | 23.0 ± 0.07 | 3.95 × 10−5 | 1.83 × 10−7 | 77910 | 50.4 | 3.9 | 5.10 | 5.02 |
BS-12 | Sp | 0.16 | 17.08 ± 0.36 | 4.55 ± 0.07 | 0.06 ± 0.01 | 303 ± 7 | 10.09 ± 0.38 | 3.6 ± 1.57 | 1.07 × 10−4 | 2.85 × 10−6 | 6861 | 2.4 | 0.9 | 0.117 | 2.30 |
BS-13 | Py | 0.22 | 59.20 ± 1.26 | 2.06 ± 0.03 | 0.04 ± 0.01 | 329 ± 7 | 52.79 ± 1.79 | 3.2 ± 0.23 | 2.73 × 10−4 | 9.51 × 10−7 | 56979 | 10.1 | 0.5 | 0.612 | 2.89 |
BS-15 | Py | 0.28 | 17.80 ± 0.38 | 2.55 ± 0.04 | 0.14 ± 0.01 | 326 ± 7 | 45.06 ± 1.44 | 11.9 ± 0.25 | 6.40 × 10−5 | 9.18 × 10−7 | 13712 | 9.3 | 2.2 | 0.522 | 2.56 |
BS-18 | Py | 0.21 | 4.51 ± 0.10 | 1.32 ± 0.02 | 1.51 ± 0.05 | 557 ± 14 | 398.89 ± 12.0 | 136.0 ± 0.05 | 2.19 × 10−5 | 6.43 × 10−7 | 11465 | 46.9 | 25.1 | 4.62 | 5.21 |
BS-25 | Py | 0.18 | 1.28 ± 0.03 | 3.87 ± 0.06 | 1.37 ± 0.04 | 312 ± 7 | 19.75 ± 0.57 | 128.2 ± 0.50 | 7.04 × 10−6 | 2.12 × 10−6 | 625 | 5.2 | 22.8 | 0.229 | 3.48 |
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Huang, J.; Peng, J.; Xie, T. Mantle Volatiles and Heat Contributions to the Cu-Pb-Zn Mineralization in the Baoshan Deposit, South China: Constraints from He and Ar Isotopes. Minerals 2024, 14, 839. https://doi.org/10.3390/min14080839
Huang J, Peng J, Xie T. Mantle Volatiles and Heat Contributions to the Cu-Pb-Zn Mineralization in the Baoshan Deposit, South China: Constraints from He and Ar Isotopes. Minerals. 2024; 14(8):839. https://doi.org/10.3390/min14080839
Chicago/Turabian StyleHuang, Jinchuan, Jiantang Peng, and Tengxiang Xie. 2024. "Mantle Volatiles and Heat Contributions to the Cu-Pb-Zn Mineralization in the Baoshan Deposit, South China: Constraints from He and Ar Isotopes" Minerals 14, no. 8: 839. https://doi.org/10.3390/min14080839