| 侯献华.胶东英格庄金矿床地质地球化学特征[J].地质与勘探,2010,46(5): |
| 胶东英格庄金矿床地质地球化学特征 |
| Characteristics of Geology and Geochemistry of the Yinggezhuang Gold Depositin Eastern Shandong Province |
| 投稿时间：2010-04-16 修订日期：2010-07-12 |
| DOI： |
| 中文关键词: 流体包裹体 均一温度 氢氧同位素 石英脉型金矿床 胶东 |
| 英文关键词: fluid inclusion,homogeneous temperature,D-O isotope,quartz vein gold deposits,Jiaodong |
| 基金项目:中国地质调查局国土资源大调查项目(编号:1212011018004)和中国地质科学院矿产资源研究所基本科研业务费专项资金
(编号:K0915)共同资助。 |
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| 中文摘要: |
| [摘要]英格庄金矿床是胶东牟平-乳山金矿成矿带重要的石英脉型金矿床之一,其产出和分布
严格受NNE 向断裂控制,围岩以古老变质岩和昆嵛山花岗岩为主,金矿物主要以晶隙金形式赋存于黄
铁矿-脉石晶体之间。通过成矿流体包裹体地球化学研究可知:均一温度变化有3 个峰值(155益~
165益、205益~215益和245益~265益);该矿床包裹体盐度w(NaCl) 较低( <17郾17 ﹪),在1郾05 ﹪ ~ 17郾17
﹪之间变化,应属于低盐度流体;据其成矿压力21郾3 ~ 58郾8MPa,进一步求得的该矿床主要成矿深度为
0郾83 ~2郾31km,为中浅成矿床;依据包裹体成分测试结果可知,矿床流体属K+ -Na+ -SO2-
4 -Cl- 型。氢氧
同位素显示其成矿流体主要来源于岩浆水和变质水,并有一定的大气降水混入。 |
| 英文摘要: |
| Abstract:The Yinggezhuang gold deposit is one of the important gold deposits of quartz vein gold type in the Mouping-Rushan gold ore belt of the
Jiaodong Peninsula in eastern China. The distribution and occurrence of the gold deposit is controlled by NNE-trending faults. Its wall rock is mainly com鄄
posed of Archean metamorphic rocks and Kunyushan granite. The gold occurred mainly in beteen minerals(Pyrite and Gangue minerals). The study on
fluid inclusion of quartz from gold ore shows that the homogeneous temperature variation has three peak ranges: 155益~ 165益, 205益~ 215益, and
245益~215益. The inclusion salinity of the deposit is relatively low, ranging 1. 05 ~ 17. 17% NaCl. The mineralization pressure ranges from 210 to
580atm, and the metallogenic depth from 0. 83 to 2. 31km, implying a meso-epi thermal low salinity deposit. Determination of fluid inclusion gredient
shows that ore fluid is of the pattern K+ -Na+ -SO24- -Cl- . The study result on D-O isotopices shows that the metallogenetic fluid originated from relict
magmatic hydrothermal water and metamorphic water mixed with some meteoric water. |
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