中文摘要：

老君山锡多金属成矿区是滇东南锡多金属成矿带的重要组成部分，具有矿化类型多样等特征。为约束成矿区内不同类型矿化的成矿流体来源，本文选取老君山成矿区内不同类型矿石及其对应的简单夕卡岩、复杂夕卡岩和花岗岩等围岩为研究对象，进行稀土元素含量分析和配分模式对比研究。全部样品总稀土含量较低（∑REE=14．3×10-6～261．7×10-6），并具有轻稀土富集特征，其中简单夕卡岩的ZREE=14．3×10-6～71．49×10-6，具有Eu正异常（δEu=1．06～1．36）和Ce负异常（15Ce=0．84～O．93）特征，其对应的矿石EREE=48．7×10-6～62．94×10-6，δEu=3．01～3．74，δCe=0．80～0．87；复杂夕卡岩的YREE=25．14×10-6～261．7×10-6，δEu变化范围为0．54～2．68，8Ce变化范围为0．82～0．97，其对应的矿石YREE范围为77．95×10-6～243．2×10-6，8Eu=0．52～2．85，δCe=0．89～0．96；花岗岩的ZREE含量变化范围较窄（69．42×10南～152．8×10西），具有强负Eu异常（δEu=0．20～0．36）和弱正ce异常（δCe=1．01～1．15）特征，其对应的矿石ZREE=54．04×10-678．31×10-6，δEu=0．34～0．76，δCe=0．95～1．01。可见不同类型矿化的稀土含量及相关参数特征与对应的赋矿围岩极为相似，暗示不同类型矿化成矿流体中稀土可能来自对应的赋矿围岩。此外，简单夕卡岩及其相关矿石的稀土元素特征与海相火山喷流沉积岩类似，而复杂夕卡岩及其相关矿石的稀土元素特征具有海相火山喷流沉积与花岗岩叠加改造的双重特征，进一步说明老君山锡多金属成矿区内锡多金属的矿化存在多种成矿作用共同影响的痕迹。

英文摘要：

Laojunshan tin poly-metallic metallogenic region, an important part of the tin poly-metaUic metallogenk belt in southeastern Yunnan province, is characterized by multi-mineralization types. Rear earth elements （REE） contents of ore-bearing rocks and associated ores were analyzed in this paper to reveal the origin of these mineralization types. The results show that all samples have low total REE contents （δREE=14.3× 10-6-261.7× 10-6） with LREE-enriched. Simple skarns have EREE contents ranging from 14.3× 10-6 to 71.49×10-6, with positive Eu anomaly （δEu=1.06-1.36） and negative Ce anomaly （δCe=0.84-0.93）. Ores host in simple skams have EREE contents ranging from 48.7× 106 to 62.94× 10-6, with 8Eu values range from 3.01 to 3.74 and δCe values range from 0.80 to 0.87. ZREE contents of complicated skarns range from 25.14×10-6 to 261.68× 10-6, with 6Eu and 8Ce values range from 0.54 to 2.68 and 0.824）.97, respectively. Ores host in this rocks have EREE contents ranging from 77.95×106to 243.18×106, with δEu range from 0.52 to 2.85 and δCe range from 0.89 to 0.96. Granites have a narrow range of total REE contents （EREE 69.42×106-152.77×106）, with obviously negative Eu anomaly （δEu=0.204）.36） and positive Ce anomaly （δCe=l.01-1.15） and its corresponding ores with ZREE=54.045×106-78.31×106, δEu=0.344）.76 and δCe=0.95-1.01. It is clearly that all ore-bearing rocks have similar REE contents and distribution patterns with its related rocks, which suggesting that REE in ore-forming fluids may be sourced from its host rocks. In addition, REE contents and associated parameters indicate that simple skarns and their related ores may be formed by marine volcanic exhalation-sedimentary and complicated skarns and their related ores may be influenced by both marine volcanic exhalation-sedimentary and Yanshanian granite magma. This implicates that multi-mineralization processes occur in Laojunshan tin poly-metallic metallogenic belt.