| 罗邦良,杨宗文,刘灵,石庆鹏,杨贵龙.贵州天柱云洞铅锌矿地质特征及成矿作用分析[J].贵州地质,2021,38(3):292-298 |
| 贵州天柱云洞铅锌矿地质特征及成矿作用分析 |
| Geological Characteristics and Mineralization Analysis of Yundong Lead-zinc Deposit in Tianzhu，Guizhou |
| 投稿时间：2021-02-13 |
| DOI： |
| 中文关键词: 铅锌矿 地质特征 成矿作用，成矿模式，天柱云洞 |
| 英文关键词:Lead-zinc deposit Geological characteristics Mineralization Mineralization model Yundong Tianzhu |
| 基金项目:黔东震旦系铅锌矿成矿规律与靶区预测研究(贵州省地质矿产勘查开发局地质科研项目，合同号:黔地矿科合[2017]6号)。 |
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| 中文摘要: |
| 云洞铅锌矿床位于南华裂谷盆地之雪峰次级裂谷盆地，赋矿地层为震旦系陡山沱组，容矿围岩主要为碳酸盐岩，少量为碎屑沉积岩，矿体呈层状、似层状产出，矿物以闪锌矿、黄铁矿及少量方铅矿，矿石结构主要有晶粒、交代残余结构，矿石构造主要为星点状、条纹状、角砾状、细粒浸染状、脉状，围岩蚀变为碳酸盐化、硅化、重晶石化。硫同位素为δ34S在+135‰+229‰之间，碳同位素为δ13CPDB=-47‰-842‰之间；氧同位素为δ13OPDB=-1331‰-1464‰，成矿温度142℃255℃，属中低温成矿流体，铅锌矿床受地层、岩相及构造热液双重因素控制，矿床成因属中低温沉积改造型矿床。成矿作用经历了沉积成岩和后期热液改造阶段。 |
| 英文摘要: |
| Yundong lead-zinc deposit located in Xuefeng secondary rift basin of Nanhua rift basin，the ore hosting strata is Doushantuo formation of Sinian system，the host rock mainly is carbonate rock，little is clastic sedimentary rock，the orebody appears in bedded and near bedded，the mineral include sphalerite，pyrite and some galena，the ore texture mainly are grain and metasomatic relict texture，the ore structure mainly are stellate，streak，brecciform，grained Disseminated and vein，the wall rock alteration are carbonation，silication and baratizationThe sulfur isotope δ34S is +135‰ to +229‰，Cisotope δ13CPDB is -47‰ to -842‰，Oisotope δ13OPDB is -1331‰ to -1464‰，the ore forming temperature is 142℃ to 255℃ and belong to medium and low temperature ore forming fluid，the lead-zinc deposit are controlled by stratum，lithology and structural hydrothermal，the genesis of deposit is medium and low temperature reworked depositThe mineralization experienced diagenesis stage and hydrothermal alteration stage in the late period |
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