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中文摘要：
核桃坪铅锌矿床产于滇西保山古生代地块内，是近年来在西南“三江”地区勘查发现的大型铅锌（铜银）多金属矿床，也是该区为数不多的以断控脉状矽卡岩赋矿为特征的矿床。详细研究了区内铅锌矿体的各种赋矿围岩、蚀变（脉）体及矿石的稀土元素地球化学特征，结果表明：围岩的稀土元素主要富集在粘土矿物中，上侵的矽卡岩流体萃取了围岩中的稀土元素，并使自身稀土元素组成发生改变；当前揭露浅部矽卡岩的成岩流体为中-低温、酸-弱酸性流体，其酸度随流体演化而不断增加。认为核桃坪铅锌矿床可能是一个远端矽卡岩型矿床，矽卡岩及伴生铅锌（铜银）的成岩成矿作用均受控制于隐伏的岩浆-热液系统。
英文摘要：
The Hetaoping Pb-Zn deposit of Baoshan County is located in western Yunnan Province.It is one of large-scale lead-zinc（copper-silver）polymetallic deposits characterized of vein skarn-type ore-bearing deposits and controlled by fractures in Three River area of Yunnan Province,southwestern China.The authors systemati-cally studied rare earth element （REE ）geochemical characteristics of the surrounding rocks,Pb-Zn ores and hydrothermal veins of Hetaoping Pb-Zn ore fields.The results show that REE in the surrounding rocks is mainly enriched in clay minerals.The skarn fluids extract the REE in the surrounding rocks and change their REE chondrite-normalized patterns.For now,exploration revealed shallow skarn diagenetic fluid is in medium-low temperature and acid-weak acid fluid,with the fluid evolutionary,the acidity of the fluid increases.Combined with the previous researching results,it is considered that the Hetaoping Pb-Zn deposit is a distal skarn-type Pb-Zn deposit and the rock-and ore-formations of the skarm and lead-zine （copper-silver）controlled by magmatic hydrothermal.
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