投稿时间：2021-05-20
修订日期：2022-01-11
网络发布日期：2022-05-06
中文摘要:毛坪铅锌矿床位于扬子陆块西南缘川滇黔铅锌多金属成矿区内，是滇东北富锗铅锌矿集区的大型典型矿床之一。文章对该矿床的矿体空间结构进行了剖析，揭示了矿体定位规律，提出了深部矿体预测区。研究表明，该矿床中矿体具成群性、等距性、方向性、成带性和“多层位”赋矿的特点；矿体大体顺层产出，具尖灭再现、膨大缩小、缓宽陡窄等特征；洛泽河两侧的层间断裂具有不同的几何学特征，导致河东的矿体群向SW侧伏，河西的矿体群向NE侧伏；成矿有利的岩性组合为下部碳酸盐岩（赋矿层）+上部含有机质泥质岩（隔档层）+膏盐层（硫源层）建造；矿体均赋存于毛坪断裂派生的猫猫山背斜NW翼层间断裂中，毛坪断裂与其上盘形成的猫猫山背斜和其层间断裂共同组成了“入字型”控矿构造型式；NE向构造带是该矿区主要的成矿构造体系；毛坪断裂为矿床的导矿构造，层间断裂带为矿床的容矿构造。通过对矿体空间结构特征及其定位规律的分析，结合工程揭露到的矿化蚀变等特征，笔者提出了4个深部预测靶区。
Abstract:The Maoping lead-zinc polymetallic ore deposit in northeastern Yunnan is an important component of the Sichuan-Yunnan-Guizhou lead-zinc polymetallic metallogenic belt in the southwestern margin of the Yangze block. Based on the analysis of the spatial structure of the orebodies of the Maoping lead-zinc deposit, this paper determined the location law of the bodies and put forward the location of the predicted targets for deep orebodies. The research shows that the orebodies of the Maoping lead-zinc deposit have the characteristics of clustering, equaldistance, directionality, zonality and multi-layer metallogenesis. The orebodies occur concordantly with the stratum, with characteristics of pinching out reappearance and expansion or contraction, etc; the different geometric characteristics of interlayer faults on the both sides of the Luoze river causes that the orebody groups east of the river plunge to SW and those west of the river plunge to NE; the favorable lithologic association for mineralization is the combination of lower carbonate rock (ore-bearing layer), upper organic argillaceous rock (barrier layer) and gypsum salt layer (sulfur layer); all orebodies occur in the interlayer fault of NW wing of the Maomaoshan anticline derived from the Maoping fault, the Maoping fault the Maomaoshan anticline formed in the hanging wall of the fault and the interlayer faults of the anticline jointly form the "λ pattern" ore controlling structure in the mining area; the NE trending structural zone is the major metallogenic structural system in the mining area; The Maoping fault is the conduit for ore forming fluids of the deposit and the interlayer fault is the ore hosting structure of the deposit. Based on the analysis of the spatial structure characteristics and location law of the orebodies of the Maoping lead-zinc deposit, and combined with the mineralization and alteration revealed by the drilling and pit exploration, four deep orebody prediction targets were generated.
keywords:geology spatial structure of orebodies location law of orebodies prospecting prediction Maoping Pb-Zn deposit northeast Yunnan Province
文章编号：
中图分类号：
文献标志码：
基金项目:国家自然科学基金项目(编号:41802089、41572060、U1133602)、云南省万人计划青年拔尖人才(编号:YNWRQNBJ-2019-157)和云南省矿产资源预测与评价工程实验室、云南省和昆明理工大学创新团项目联合资助
引用文本：
王磊,韩润生,张艳,周高明,钟华,佐嘉庚,邓平.2022.滇东北毛坪铅锌矿床矿体空间结构及深部矿体预测[J].矿床地质,41(2):207~224WANG Lei,HAN RunSheng,ZHANG Yan,ZHOU GaoMing,ZHONG Hua,ZUO JiaGeng,DENG Ping.2022.Spatial structure of orebodies and prediction of deep orebodies of Maoping lead-zinc deposit, northeastern Yunnan Province[J].Mineral Deposits41(2):207~224
图/表
