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| 贵州习水谢家坝铅锌矿地质特征及成因类型 |
| Ore deposit geology characteristics and genetic types of Xiejiaba Lead-Zinc Deposit in Xishui County of Guizhou Province |
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| DOI： |
| 中文关键词: 贵州习水;铅锌矿;矿床特征;成因类型 |
| 英文关键词: Xishui County of Guizhou Province; lead-zinc deposit; deposit features; genetic types |
| 基金项目: |
| 作者 | 单位 | | 陈云明,刘志臣,李刚成,铁永洪 | 贵州省地矿局 102地质大队,贵州 遵义 563003 |
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| 中文摘要: |
| 对贵州习水谢家坝铅锌矿床的地质特征、矿石特征开展综合分析,并根据“密西西比型”矿床的主要识别标志进行对比分析,探讨谢家坝铅锌矿床成因类型,并总结找矿标志,为下一步找矿勘查提供理论依据.本区铅锌矿体赋存于震旦系上统灯影组上部白云岩地层中,沿着桑木场背斜轴部方向产出,严格受地层、断层裂隙控制,以铅锌矿石为主,伴生重晶石和萤石,围岩蚀变主要为黄铁矿化、弱白云石化、强重晶石化、弱硅化4种类型,其成矿模式主要为流体运移-混合模式,找矿标志主要为地层标志、构造标志、地表露头矿化标志.其地质特征、矿床特征、矿石特征与扬子地块中川滇黔地区灯影组地层铅锌矿床特征进行对比,对比结果显示谢家坝铅锌矿床成因类型为“密西西比型”矿床,即MVT型矿床. |
| 英文摘要: |
| This paper makes a comprehensive analysis of geological characteristics, ore characteristics of the Xie Jiaba pb-zn deposit of Guizhou Province. According to the “Mississippi” type ore deposits on the identification of the comparison and analysis, this paper also explores the Xiejiaba deposit genetic type, and summarizes the ore-prospecting criteria, so as to provide a theoretical basis for the prospecting exploration in the future. The pb-zn orebody occurs in the Dengying group on the sinian system in the upper part of the dolomite strata, along the Shangmuchang field output anticline axis direction, and is strictly controlled by strata, fault. It is mainly lead and zinc ore, barite and fluorite associated. The wall rock alteration includes four types, i.e. pyrite, strong weak dolomitization, barite, weak silicification. As to the main metallogenic model for fluid migration-mixed mode, prospecting marks are mainly stratigraphic, structural marks, surface outcrop mineralization. It is the geological characteristics, ore deposit, ore characteristics and Sichuan-Yunnan-Guizhou region group of Yangtze massif, comparing with the formation characteristics of pb-zn deposit. The comparison results show that the Xiejiaba pb-zn deposit genetic types is “Mississippi” type ore deposit, namely the MVT type deposit. |
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