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

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