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云南禄劝噜鲁铅锌矿床位于扬子地块西南边缘,矿石矿物主要为方铅矿、闪锌矿、黄铁矿,对该矿床进行了系统的稀土元素和微量元素分析测试。结果表明:赋矿围岩中稀土元素总量(∑REE)变化范围介于(1.480~69.030)×10~(-6)之间,轻稀土元素相对富集。两期黄铁矿稀土及微量元素存在一定的差异,一期黄铁矿δEu显示强负异常,δCe值弱负异常,配分模式与赋矿围岩相似,二期黄铁矿δEu值显示正异常,δCe值表现强负异常。成矿流体为多来源,成矿环境可能存在一个相对还原向相对氧化的变化过程。两期黄铁矿HFSE亏损,Nb/La,Th/La值均<1,Hf/Sm仅有部分值>1,表明成矿流体可能为富Cl流体,成矿流体可能遭受了外来热液的混入,两期黄铁矿Co/Ni比值较小,表明成矿温度为中低温。第一期黄铁矿Y/Ho(25.909~44.429)较第二期Y/Ho(4.617~23.600)比值大。黄铁矿Y/Ho比值表明赋矿地层有可能为第一期黄铁矿提供了成矿流体来源,第二期黄铁矿Y/Ho比值部分落入峨眉山玄武岩范围内,峨眉山玄武岩有可能为成矿提供成矿流体。
The Pb-Zn-Zn deposit in Luquan, Lulu, Yunnan Province is located on the southwestern margin of the Yangtze block. The ore minerals are mainly galena, sphalerite and pyrite, and their REEs and trace elements are systematically analyzed and tested. The results show that the content of rare earth elements (ΣREE) varies from (1.480 to 69.030) × 10 ~ (-6), and that of light rare earth elements is relatively enriched. There are some differences between REE and trace elements in the two pyrites. The δEu values of the first stage pyrites show a strong negative anomaly and the δCe values are weakly anomalous. The distribution pattern is similar to that of the ore-hosting rocks. The δEu values of the second pyrite show a positive anomaly , δCe values show strong negative anomalies. The ore-forming fluid is a multi-source, and there may be a relative reduction to relative oxidation in the ore-forming environment. HFSE losses of both pyrites are both depleted in HFSE, Nb / La and Th / La values are all less than 1, with only partial values of Hf / Sm> 1 indicating that the ore-forming fluids may be Cl-rich fluids and the ore-forming fluids may suffer from hydrothermal Mixed, two pyrite Co / Ni ratio is small, indicating that the mineralization temperature is low temperature. The first phase pyrite Y / Ho (25.909 ~ 44.429) is larger than the second phase Y / Ho (4.617 ~ 23.600). The Y / Ho ratios of pyrite indicate that the ore-forming strata may provide the source of ore-forming fluid for the first stage pyrite. The Y / Ho ratio of the second stage pyrite falls into the range of Emeishan basalts, and the Emeishan basalts may be Mineralization provides ore-forming fluid.