Stable isotopes (O, H, and S) in the muteh gold deposit, golpaygan area, Iran

被引：0
作者：
Abdollahi M.J. [1 ,2 ]
Karimpour M.H. [3 ]
Kheradmand A. [1 ]
Zarasvandi A.R. [2 ]
机构：
[1] Department of Geology, Shahid Bahonar University, Kerman
[2] Department of Geology, Shahid Chamran University, Ahvaz
[3] Department of Geology, Ferdousi University, Mashhad
来源：
Natural Resources Research | 2009年 / 18卷 / 2期
关键词：
Isotope; Metamorphic zone; Muteh; Old deposit; Pyrite; Quartz veins; Sanandaj-Sirjan zone;
D O I：
10.1007/s11053-009-9091-3
中图分类号：
学科分类号：
摘要：
The Muteh gold district with nine gold deposits is located in the Sanandaj-Sirjan metamorphic zone. Gold mineralization occurs in a pre-Permian complex which mainly consists of green schists, meta-volcanics, and gneiss rocks. Shear zones are the host of gold mineralization. Gold paragenesis minerals include pyrite, chalcopyrite, pyrrhotite, and secondary minerals. Pyrites occur as pre-, syn-, and post-metamorphism minerals. To determine the source of the ore-bearing fluids, fifty samples were selected for petrographical and stable isotope studies. The mean values of 12.4‰, and -42‰ for δ18O and δD isotopes, respectively, and a mean value of 7.75‰ of calculated fractionation factors for δ18O H2O, from quartz veins indicate that metamorphic host rocks are the most important source for the fluids and gold mineralization. Three generations of pyrite can be distinguished showing a wide range of δ34S. Gold mineralization is closely associated with intense hydrothermal alteration along the ductile shear zones. The characteristics of the gold mineralization in the study area are similar to those of orogenic gold deposits elsewhere. © 2009 International Association for Mathematical Geology.
引用
收藏
页码：137 / 151
页数：14
相关论文
共 41 条
  • [1] Abdollahi M.J., Kheradmand A., Karimpour M.H., Zarasvandi A., Petrography of the gold bearing rocks in the Muteh District, Golpaygan, Isfahan Province, Proceedings of the 13th Conference of Crystallography and Mineralogy of Iran, pp. 298-302, (2006)
  • [2] Alavi M., Tectonics of the Zagros orogenic belt of Iran: New data and interpretations, Tectonophysics, 229, pp. 211-238, (1994)
  • [3] Barnes H.L., Geochemistry of Hydrothermal Ore Deposits, (1979)
  • [4] Muteh Gold Ore Processing Report., (1991)
  • [5] Report on Resource Evaluation for the Chah Khatoon Deposit, (1992)
  • [6] Cole D.R., Ripley E.M., Oxygen isotope fractionation between chlorite and water from 170-350C: A preliminary assessment based on partial exchange and fluid/rock experiments, Geochim, Cosmochim. Acta, 63, pp. 449-457, (1998)
  • [7] Darehbidi M.H., Processing of Muteh Sulphide Ore (Chah Khatoon), (1994)
  • [8] Farhanghi A., Ladeira E.A., Gold prospecting in the Muteh region, Esfahan, Iran, Brazil Gold '91, pp. 801-804, (1991)
  • [9] Gebre-Mariam M., Hagemann S.G., Groves D.I., A classification scheme for epigenetic lode-gold deposits, Miner. Deposita, 30, pp. 408-410, (1995)
  • [10] Goldfarb R.J., Leach D.I., Pickthron W.J., Paterson C.J., Origin of lode-gold deposits of the Juneau gold deposit, southeast Alaska, Geology, 16, pp. 440-443, (1988)
12345