安徽金寨沙坪沟整装勘查区铅锌矿“三位一体”成矿特征及找矿预测

doi:10.13278/j.cnki.jjuese.20190275

摘要/Abstract

摘要： 沙坪沟整装勘查区位于安徽北淮阳成矿带内，是皖西地区最主要的钼铅锌多金属矿化集中区。研究区内已探明十余处铅锌矿，以小型矿为主，但缺乏较为系统的研究和总结。为了厘定区内铅锌矿与成矿地质体的关系以及成矿构造和成矿结构面的类型和属性，总结成矿作用特征标志，指导找矿预测，本文开展了区内典型矿床"三位一体"成矿特征的总结研究。研究结果揭示区内铅锌矿化类型分为角砾岩型、矽卡岩型、构造蚀变岩型和热液脉型4种，成矿地质体为燕山晚期中酸性岩浆岩，成矿构造为NE向和NW向断裂构造交会部位，成矿结构面主要为NE和NW断裂构造面、角砾岩筒、层间破碎带以及接触带等。在总结归纳铅锌矿成矿作用特征和找矿预测要素的基础上，建立起区内铅锌矿找矿预测地质模型，并对找矿潜力作出评价。

关键词: 沙坪沟, 三位一体, 铅锌矿床, 成矿模式

Abstract: Shapinggou exploration area is located in north Huaiyang metallogenic belt in Anhui, which is the main concentration area of molybdenum lead zinc polymetallic mineralization in west Anhui Province. Dozens of Pb-Zn deposits have been found in the study area,mainly small deposits and lack of systematic research and summary data. In order to determine the relationship between Pb-Zn deposits and the ore-forming geological bodies as well as the types and properties of ore-forming structures and structural planes, the authors summarized the characteristics of mineralization,so as to guide the prospecting prediction. A study was carried out on the "Trinity" metallogenic characteristics of typical deposits in this area. The results show that there are four types of Pb-Zn mineralization: Breccia type, skarn type, structural alteration type, and hydrothermal vein type. The ore-forming geological bodies are of the Late Yanshan intermediate acid magmatic rock, and the ore-forming structures are the intersections intersections of the NE and NW fault structures. The ore-forming structural planes are mainly NE and NW fault structural planes, breccia tube, interlayer fracture zone, and contact zone, etc. Based on the metallogenic characteristics of lead-zinc deposits and the elements for ore prospecting prediction, the geological model for ore prospecting prediction of lead-zinc deposits is established in order to evaluate the ore prospecting potential in this area.

Key words: Shapinggou, trinity, Pb-Zn deposit, metallogenic model

中图分类号:

刘忠, 陈海锋, 张怀东, 王波华. 安徽金寨沙坪沟整装勘查区铅锌矿“三位一体”成矿特征及找矿预测[J]. 吉林大学学报(地球科学版), 2020, 50(5): 1539-1551.

Liu Zhong, Chen Haifeng, Zhang Huaidong, Wang Bohua. “Trinity” Metallogenic Characteristics and Prospecting Prediction of Pb-Zn Deposits in Shapinggou Integrated Exploration Area of Jinzhai, Anhui Province[J]. Journal of Jilin University(Earth Science Edition), 2020, 50(5): 1539-1551.

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