资源与产业 ›› 2019, Vol. 21 ›› Issue (3): 83-89.DOI: 10.13776/j.cnki.resourcesindustries.20190408.003

• 非主题来稿选登 • 上一篇    下一篇

云南东川观音山铜矿矿床地质特征及找矿标志

杨金富莫向云,李 星,张荣伟   

  1. (云南省有色地质局地质勘查院,云南 昆明 650216)
  • 收稿日期:2018-09-26 修回日期:2019-01-22 出版日期:2019-06-20 发布日期:2019-07-03
  • 通讯作者: 杨金富 2501496238@qq.com
  • 基金资助:
    云南省东川杉木箐-禄劝笔架山铁铜矿整装勘查基金项目(Z201105)

GEOLOGY AND PROSPECTING MARKS OF GUANYINSHAN COPPER DEPOSIT, DONGCHUAN, YUNNAN PROVINCE

YANG Jinfu, MO Xiangyun, LI Xing, ZHANG Rongwei   

  1. (Yunnan Geological Exploration Institute of Nonferrous Metals Geological Bureau, Kunming 650216, China)
  • Received:2018-09-26 Revised:2019-01-22 Online:2019-06-20 Published:2019-07-03

摘要: 观音山铜矿是东川“五层楼”成矿系列中的沉积-热液改造型铜矿,发育“上铜下铁”的空间矿化结构。结合矿区相关地质工作成果,对矿床地质特征、成矿条件、矿床成因等进行分析,得出以下结论: 1)矿(化)体主要赋存于大营盘组二段(Pt2〖WTBX〗d〖WTBZ〗2)碳-硅质板岩中,矿体呈层状、透镜状产出,自上而下发育3层矿化;2)矿床金属矿物以黄铜矿、黄铁矿为主,次生氧化物为孔雀石,以脉状、条纹状、浸染状等沉积型矿石结构构造为主;3)矿床的形成严格受控于沉积构造环境、岩相古地理、含矿建造及成矿环境等,总体属砂页岩-碎屑岩建造的沉积-变质-改造型铜矿床;4)“观音山式”铜矿具有显著的层、相、位专属性,其落因带西侧大营盘组出露地区成矿条件较好,是寻找观音山式铜矿的重点找矿靶区。

关键词: 铜矿床, 成矿作用, 找矿标志, 观音山

Abstract: Guanyinshan copper deposit, located in Dongchuan, is one sedimentary-hydrothermal reformation type, belonging to ‘five-story’ metallogenic series with ‘cooper-up-iron-down’ spatial structure. This paper analyzes its deposit geology, mineralization conditions and genesis based on research results. The major orebodies are hosted in Member 2 of Dayingpan formation (Pt?d2) carbonaceous-siliceous slate occurring as stratified or lens-like with 3 ore beds. Metallic minerals are mainly chalcopyrite and pyrite with secondary malachite, textures are vein-like, striped or disseminated. Deposit is formed under control of sedimentary structural environment, lithofacies paleogeography and ore-bearing formation, generally a sedimentary meta-reformed cooper deposit in sandy shale-debris formation. Guanyinshan cooper deposit is exclusively of typical strata, lithofacies and locality. Dayingpan strata are well exposed in its west, where may be of potential to look for Guanyinshan-style cooper deposits. 

Key words: cooper deposit, metallogenesis, prospecting marks, Guanyinshan

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