| 张天栋,刘忠法,邸洪飞,张俊柯,陈可,邵拥军.湘南宝山铜铅锌多金属矿床闪锌矿元素地球化学特征及其对成矿的制约[J].矿产勘查,2021,12(8):1716-1726 |
| 湘南宝山铜铅锌多金属矿床闪锌矿元素地球化学特征及其对成矿的制约 |
| Geochemical characteristics of sphalerite from the Baoshan deposit in southern Hunan and its implications for Cu-Pb-Zn-Ag polymetallic ore-forming mechanism |
| 投稿时间：2021-02-08 |
| DOI： |
| 中文关键词: 闪锌矿 主微量元素 EPMA和 LA-ICP-MS 宝山矿床 湘南地区 |
| 英文关键词: sphalerite major and trace elements EPMA and LA-ICP-MS Baoshan deposit southern Hunan area |
| 基金项目:国家重点研发计划课题:深部靶区圈定与资源潜力评价(2018YFC0603904)资助。 |
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| 中文摘要: |
| 位于钦杭成矿带和南岭成矿带叠合部位的湘南地区是我国重要的 W、 Sn、 Cu、 Pb、 Zn、 Ag多金属矿集区，宝山 Cu、 Pb、 Zn、 Ag多金属矿床是湘南地区代表性的矿床。相比中部矽卡岩型矿体，西部和北部脉状矿体研究程度较低。本文拟通过电子探针(EPMA)和激光剥蚀电感耦合等离子体质谱(LA-ICP-MS)原位微区分析技术，对比研究矽卡岩型矿体和脉状矿体的微量元素赋存状态、成矿环境及矿床成因。分析结果显示，宝山矿区不同类型矿体中的闪锌矿均富含 Fe、 Mn和 In，亏损 Ga、 Ge、 Te和 Tl等元素， Fe、 Mn、Cd和 In等元素主要以类质同象的形式赋存于闪锌矿中；矽卡岩型矿体形成于中—高温度环境，脉状矿体形成于中温环境。综合分析认为，宝山铜铅锌银矿床为形成于中—高温环境下的广义矽卡岩型矿床。值得注意的是， Cd含量达到了伴生工业品位的数百倍，具有很高的综合利用价值。 |
| 英文摘要: |
| Southern Hunan, located at the superposition of the Qinhang metallogenic belt and the Nanling metallogenic belt, is an important W, Sn, Cu, Pb, Zn and Ag polymetallic ore concentration area in China. The Baoshan Cu, Pb, Zn and Ag polymetallic deposit is a representative deposit in southern Hunan. Compared with the skarn type ore bodies in the middle, the vein ore bodies in the West and North are less studied. In this paper, the occurrence state of trace elements, metallogenic environment and genesis of skarn ore body and vein ore body are compared by Electron Probe Micro-analysis (EPMA) and Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS). The results show that sphalerite in di.erent types of ore bodies in Baoshan mining area is rich in Fe, Mn and in, depleted Ga, Ge, Te and Tl. Fe, Mn, Cd and In mainly occur in sphalerite in the form of isomorphism. Skarn type ore bodies are formed in the medium-high temperature environment, and vein ore bodies are formed in the medium temperature environment. Comprehensive analysis shows that the Baoshan copper lead zinc silver deposit is a generalized skarn deposit formed in the medium-high temperature environment. It is worth noting that the Cd content reaches hundreds of times of the associated industrial grade, which has high comprehensive utilization value. |
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