| 曹亮,许荣科,陕亮,张雨莲.甘肃北山南金山金矿床流体包裹体研究[J].地质找矿论丛,2011,26(3):249-254,327 |
| 甘肃北山南金山金矿床流体包裹体研究 |
| Study on fluid inclisions of Nanjinshan gold deposit of Beishan area, Gansu Province |
| 投稿时间：2009-12-14 修订日期：2011-05-18 |
| DOI：10.6053/j.issn.1001-1412.2011.3. 002 |
| 中文关键词: 南金山金矿床 浅成低温热液矿床 流体包裹体 甘肃北山 |
| 英文关键词:Nanjinshan gold deposit epithermal deposit fluid inclisions Beishan area in Gansu province |
| 基金项目:中国地质调查局国土资源大调查项目(1212010531504)资助 |
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| 中文摘要: |
| 包裹体研究表明,南金山金矿含金矿化体及石英脉中流体包裹体发育一般,且粒度偏小,主要为CO2包裹体和气液2相包裹体。南金山金矿床成矿流体以中低温(160～240℃)、中低盐度(w(NaCl)=6%～7%)、富含CO2为特征,成矿流体属于Na+(K+,Ca2+)-Cl--(F-)-H2O体系。石英矿物氢氧同位素测试结果,δ(18O石英)=12.2×10-3～15.8×10-3,以富18O为特征;矿物水δ(18O水)=-0.22×10-3～7.44×10-3,反映成矿流体来源于深部,成矿作用过程中有大量的大气降水加入。 |
| 英文摘要: |
| Fluid inclusions in quartz vein and mineralized bodies are moderately developed in Nanjinshan gold deposit with small size.They occur mostly CO2 inclusion and two phase(liquid and gas)inclusion.The ore fluid of Nanjinshan gold deposit is characterized by medium-low temperature(160 to 240℃),medium-low salinity(NaCleq 6% to 7%)and enrichment of CO2 belonging to Na+(K+,Ca2+)-Cl-(F-)-H2O system.H,O,isotope analysis of gold-bearing quartz is δ(18Oquartz) 12.2×10-3 to 15.8×10-3 with enrichment of 18O and δ(18OH2O)-0.22×10-3 to 7.44×10-3.This reflects that the ore fluid is of deep source and large volume meteoric water icorporate in the mineralization. |
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