陈黎,周蜀,周维德.西藏仲巴县天公尼勒铜金矿床地质特征及矿床成因[J].地质找矿论丛,2020,35(4):414-423
西藏仲巴县天公尼勒铜金矿床地质特征及矿床成因
Geological characteristics and genesis of Tiangongnile Cu-Au deposit in Zhongba county, Tibet
投稿时间:2020-04-11  修订日期:2020-09-29
DOI:10.6053/j.issn.1001-1412.2020.04.006
中文关键词:  天公尼勒铜金矿  构造蚀变岩型矿床  控矿断裂  层间破碎带  矿床地质特征  矿床成因  西藏自治区
英文关键词:Tiangongnile Cu-Au deposit  tectonic altered rock type deposit  ore controlling faults  Interlaminar crushing zone  geological characteristics of deposit  genesis of mineral deposit  Tibet
基金项目:
作者单位
陈黎 四川省冶金地质勘查院, 成都 610051 
周蜀 四川省冶金地质勘查院, 成都 610051 
周维德 四川省冶金地质勘查院, 成都 610051 
摘要点击次数: 86
全文下载次数: 75
中文摘要:
      西藏仲巴县天公尼勒铜金矿床为一小而富的铜金矿床,矿化体赋存于早白垩世闪长岩体外接触带NE—NNE向断裂及其层间破碎带中,控矿岩体的外接触带发育的NW向韧脆性剪切断裂带控制着矿区断裂系统,已知的铜金矿体特征相似,均产于灰黑色结晶灰岩与灰白色大理岩接触部位的断裂破碎带和层间破碎带中;矿石矿物主要有黄铜矿、蓝铜矿、孔雀石、辉铜矿、黄铁矿、赤铁矿、褐铁矿等,脉石矿物为石英、方解石和绿帘石等;成矿经历了岩浆热液期(包括中高温热液阶段和中温热液阶段)和次生氧化期;早白垩世石英闪长岩的侵入、NW—NNE向断裂和层间破碎带是成矿的主要控制因素;矿床的成因类型为岩浆热液交代充填型矿床,其工业类型为构造破碎带蚀变岩型矿床。
英文摘要:
      Tiangongnile Cu-Au deposit is a rich deposit in small size. Mineralization occur in NE-NNE fault and its fractural zone of the outer contact zone of Early Cretaceous diorite body. NW ductile-brittle shearing fractural zone in the outer contact zone of the ore-control intrusive body controls the fault system in the study area. Characteristics of the known ore body are similar. They are all located in the fractural and inter-formation zones between the gray-black crystal limestone and the gray-white marble with azurite, malachite, chalcopyrite, chalcocite, hematite and limonite etc. as the main ore minerals and quartz, calcite and epidote the gangue minerals. The mineralization exposed to hydrothermal (from medium-high temperature to medium temperature) and secondary oxidation processes. The Early Cretaceous diorite intrusion and the inter-formation zones are the main ore control factors. Genetically. it is a magmatic hydrothermal replacement filling type deposit, industrially a altered cataclastic rock type.
查看全文  查看/发表评论  下载PDF阅读器
关闭