Study on Fluid Inclusions of Nanjinshan Gold Deposit of Beishan Area , Gansu
详细信息
- 责任者：Cao Liang (Wuhan Institute of Geology and Mineral Resources ; Wuhan 440023 ; China) ; Xu Rongke
- 刊名：Contributions to Geology and Mineral Resources Research
- 出版年：2011
- 卷期：26(3)
- 关键词：金矿 ; gold ores ; 流体包裹体 ; fluid inclusions ; 甘肃 ; Gansu Province
- 页码：p.249-254,327
- 图表：8 illus., 3 tables, 9 refs.
- 分类号：1001
- 出版序号：1757
- issnNo：ISSN1001-1412
- isbnNo：CN12-1131/P
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 δ18Oquartz 12.2×10-3 to 15.8×10-3 with enrichment of 18O and δ18OH2O-0.22×10-3 to 7.44×10-3. This reflects that the ore fluid is of deep source and large volume meteoric water incorporate in the mineralization.