云南东川观音山铜矿成矿模式及找矿方向

摘要/Abstract

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，大地构造位置处于昆阳裂谷会理—东川坳拉槽东缘。通过对观音山铜矿床的矿床地质特征及地球化学特征的研究，系统阐述了该铜矿的赋矿岩石、矿体特征以及矿石、蚀变、矿化等地质特征。研究表明：①矿床主要的赋矿层位为大营盘组二段绢云板岩与硅质板岩，矿体呈层状、似层状及透镜状产出；②大营盘组板岩呈“低钾高钠”特征，δ34S值集中于4.1‰~17.1‰，表明硫源以岩浆作用为主要来源，部分属海水硫酸盐硫来源；③石英流体包裹体测得的2个成矿温度区间分别为182~238 ℃和242~392 ℃，对应的盐度w（NaCl）为5.7%~13.2%和18.2%~25.4%，据此将矿床成矿阶段划分为中—低温中盐度的沉积成矿阶段以及中—高温低—高盐度的变质—改造—富集成矿阶段；④矿床严格受地层、构造控制，后期变质热液/构造热液沿构造裂隙、层面对早期形成的沉积型铜矿进行改造、富化，矿床成因总体属沉积—变质—改造型铜矿床。在上述分析的基础上，圈定了菜园子—观音山、茂麓—帽壳山及小营盘—锅底荡等地区为矿区下一步的重要找矿靶区，该类区域找矿潜力较大，值得进一步开展工作。

关键词: 铜矿, &ldquo, 五层楼&rdquo, 成矿系列, 地球化学特征, 成矿模式, 找矿靶区

Abstract: Guanyinshan Copper Deposit is a sedimentary-hydrothermal reformation deposit of “five-story” metallogenic series in Dongchuan area，which is characterized by the spatial mineralization structure （the upper part of the deposit is copper orebody and the lower part the deposit is iron orebody）.The deposit is located at the eastern edge of Huili-Dongchuan Aulacogen of Kunyang Rift.Through the study of geological characteristics and geochemical characteristics of Guanyinshan Copper Deposit，the characteristics of ore-hosting rock and orebodies and the geological haracteristics of ores，alterations and mineralizations are analyzed.The resutls show that:①the deposit is mainly hosted in the sericite-slate and siliceous-slate of Middle Formation Dayingpan Group，and the orebodies are occurred as layered，stratiform-like and lenticular；②the slate of Dayingpan Group presents the characterizes of “low potassium and high sodium”，which δ34S value changes from 4.1‰ to 17.1‰，it is further show that the sulfur is mainly from magmatism and subordinately from seawater sulfur；③through the test of fluid inclusion in quartz，it is show that the two ore-forming temperature ranges are 182~238 ℃ and 242~392 ℃，the corresponding salinity （w（NaCl）） are 5.7%~13.2% and 18.2%~25.4%，according to the above test results，the metallogenic stage of the deposit can be divided into middle-low temperature and middle-salinity sedimentary metallogenic stage and middle-high temperature and low-high salinity metamorphic-reformation-enrichment metallogenic stage；④he deposit is strictly controlled by strata and tectonic，the sedimentary copper deposit formed in the early stage is reformed and enriched by the later metamirphic hydrothermal/tectonic thdrothermal along the structural fissures and structural planes，the genesis can be attributed to sedimentary-metamorphic-transformation type copper deposit.Based on the above analysis results，the Caiyuanzi-Guanyinshan，Maolu-Maoqiaoshan and Xiaoyingpan-Guodidang areas are delineated as the significant prospecting target areas in the mining area，the prospecting potential of the three prospecting target areas is large，they are worth conducting further prospecting work.

Key words: Copper deposit, “Five-story&rdquo, metallogenic series, Geochemical characteristics, Metallogenic model, Prospecting target area

杨金富, 莫向云, 李星, 张荣伟. 云南东川观音山铜矿成矿模式及找矿方向[J]. 金属矿山, 2018, 47(10): 130-137.

YANG Jin-Fu, MO Xiang-Yun, LI Xing, ZHANG Rong-Wei. Prospecting Direction and Metallogenic Model for Guanyinshan Copper Deposit in Dongchuan District， Yunnan Province[J]. Metal Mine, 2018, 47(10): 130-137.

[1]	邹勤, 龙冰, 雷小明, 杨长安, 刘诚. 国外某低品位铜锌硫化矿浮选分离试验研究[J]. 金属矿山, 2020, 49(09): 111-117.
[2]	黄烈凤, 贺泽铭, 刘伟超, 左蔚然. 高压电脉冲破碎改善紫金山铜矿石浸出性质的试验研究[J]. 金属矿山, 2020, 49(09): 118-124.
[3]	苏特, 钱建平, 周伟蛟, 喻菊阳, 张果, 关显东, 吴正鹏. 湖南安化渣滓溪钨锑矿床成矿构造分析及找矿预测[J]. 金属矿山, 2020, 49(09): 147-158.
[4]	田九玲. 基于证据权模型的赤峰—呼伦贝尔成矿带找矿预测[J]. 金属矿山, 2020, 49(09): 167-172.
[5]	刘大勇, 彭桥梁, 苏特. 万家坪锰矿地质地球化学特征及找矿远景[J]. 金属矿山, 2020, 49(08): 119-128.
[6]	陈克强, 印万忠, 饶峰, 马英强, 吴洁, 缪彦. 地质聚合反应制团对低品位铜矿石高压辊破碎—生物浸出的影响[J]. 金属矿山, 2020, 49(07): 105-110.
[7]	蔡仲明, 杨骁, 楚卢凯, 杨瑞西, 岳国利. 西藏格玛铅锌矿区地质特征及综合找矿模式[J]. 金属矿山, 2020, 49(07): 122-129.
[8]	孙乾予, 印万忠, 宋振国. 影响典型铜矿物可浮性的晶体化学基因研究[J]. 金属矿山, 2020, 49(06): 42-47.
[9]	盛秋月 , 印万忠 , 马英强 , 唐远, 孙浩然 , 杨斌 . 硫酸铵对蓝铜矿硫化浮选的影响及基因机理分析[J]. 金属矿山, 2020, 49(06): 104-109.
[10]	迟晓鹏, 郭芸杉, 衷水平, 吕旭龙, 刘春, 吴健辉. 新型捕收剂GC-I在铜矿渣浮选中的应用[J]. 金属矿山, 2020, 50(05): 205-209.
[11]	代献仁, 陈洲, 袁启东, 刘军, 张永. 安徽某铜矿山浮选柱半工业试验[J]. 金属矿山, 2020, 49(04): 78-83.
[12]	耿国帅, 张德会, 杨帆, 张晶, 湛龙. 东昆仑东段水系沉积物测量数据处理中因子分析法的应用研究[J]. 金属矿山, 2020, 49(04): 105-117.
[13]	刘方华. 国外某沉积岩型难选硫氧混合铜矿石浮选试验[J]. 金属矿山, 2019, 48(11): 73-78.
[14]	张旭佳, 莽昌烨, 马志军, 赵海涛. 云南某含银铜矿石浮选试验[J]. 金属矿山, 2019, 48(11): 79-83.
[15]	朱虹嘉, 李育彪, 王洪铎, 刘泰铭. H₂O₂及海水对铜钼硫化矿浮选分离的影响及机理研究[J]. 金属矿山, 2019, 48(11): 84-87.

云南东川观音山铜矿成矿模式及找矿方向

Prospecting Direction and Metallogenic Model for Guanyinshan Copper Deposit in Dongchuan District， Yunnan Province

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价