山东七宝山Au–Cu矿床流体演化及成矿机理研究

李顺达; 陈川; 夏芳; 高玲玲

doi:10.13568/j.cnki.651094.651316.2020.05.12.0001

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山东七宝山Au–Cu矿床流体演化及成矿机理研究

生态·资源·环境 | 更新时间：2026-01-21

- 山东七宝山Au–Cu矿床流体演化及成矿机理研究
- 山东七宝山Au–Cu矿床流体演化及成矿机理研究
- 新疆大学学报（自然科学版中英文） 2021年38卷第3期页码：321-333
- 作者机构：
  
  新疆大学地质与矿业工程学院新疆中亚造山带大陆动力学与成矿预测自治区重点实验室
- 作者简介：
- 基金信息：
  
  新疆大学博士科研启动基金（620312389）
- DOI：10.13568/j.cnki.651094.651316.2020.05.12.0001
  中图分类号： P611
- 纸质出版：2021
- 稿件说明：
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[1]李顺达,陈川,夏芳,等.山东七宝山Au–Cu矿床流体演化及成矿机理研究[J].新疆大学学报(自然科学版)(中英文),2021,38(03):321-333.
[1]李顺达,陈川,夏芳,等.山东七宝山Au–Cu矿床流体演化及成矿机理研究[J].新疆大学学报(自然科学版)(中英文),2021,38(03):321-333. DOI： 10.13568/j.cnki.651094.651316.2020.05.12.0001.

DOI：10.13568/j.cnki.651094.651316.2020.05.12.0001.

摘要

矿床位于山东半岛SW部.角砾状及脉状矿化发育在石英闪长玢岩与辉石闪长岩中.成矿阶段划分为:I镜铁矿–自然金–石英阶段

II黄铁矿–黄铜矿–石英阶段

III贫硫化物–石英–方解石阶段.I阶段石英中发育富气相与含子矿物包裹体

盐度分别为0.7～5.4 wt.%与40.6～51.3 wt.%

均一温度352～479℃;II阶段石英中发育富液相、富气相及含子矿物包裹体

盐度分别为0.7～2.1 wt.%

4.2～18.4 wt.%

34.5～40.2 wt.%

均一温度233～342℃;III阶段仅发育富液相包裹体

盐度5.0～9.9 wt.%

均一温度135～246℃.石英样品氢氧碳同位素分析结果指示成矿流体初始为岩浆水

随后大气降水混入

并与含碳地层发生水–岩交换.黄铁矿及黄铜矿硫同位素指示成矿物质源于石英闪长玢岩及部分其他围岩.矿床属于典型的中温岩浆热液矿床.

Abstract

The Qibaoshan Au–Cu deposit is located in the southwestern Shandong Peninsula. Mineralization occurs in breccia and veins within pyroxene diorite and quartz diorite porphyry. Three paragenetic stages are identified in Qibaoshan Au–Cu deposit: stage I specularite–gold–quartz

stage II pyrite–chalcopyrite–quartz

and stage III poor sulfide–quartz–calcite. Stage I fluids in vapor–rich and daughter mineral bearing inclusions have salinities of 0.7 ～ 5.4 wt.% and 40.6 ～ 51.3 wt.% homogenization temperature of 352 ～ 479 ℃; Stage II fluids in liquid–rich

vapor–rich and daughter mineral bearing inclusions have salinities of 0.7 ～ 2.1 wt.%

4.2 ～ 18.4 wt.%

34.5 ～ 40.2 wt.%

respectively

homogenization temperature of 233 ～ 342 ℃; Stage 3 fluids in liquid–rich inclusions have salinities of 5.0 ～ 9.9 wt.% and homogenization temperature of 135 ～ 246 ℃. Oxygen

hydrogen

and carbon isotopic data of quartz indicate that the ore-forming fluids were of magmatic origin

then mixed with meteoric water

and had a water–rock reaction with carbon–bearing strata. Sulfur isotopic data for chalcopyrite and pyrite reveal that the ore–forming materials were mainly derived from quartz diorite porphyry

with minor contributions from wall rocks Qibaoshan is a mesothermal magmatic hydrothermal deposit.

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