Fluid inclusion and stable isotope constraints on ore genesis of the Zajkan epithermal base metal deposit, Tarom-Hashtjin metallogenic belt, NW Iran
文献类型：期刊论文
| 作者 | Kouhestani, Hossein1; Mokhtari, Mir Ali Asghar1; Qin, Kezhang2,3,4; Zhao, Junxing2 |
| 刊名 | ORE GEOLOGY REVIEWS
 |
| 出版日期 | 2019-06-01 |
| 卷号 | 109页码:564-584 |
| 关键词 | Intermediate-sulfidation Fluid inclusion Stable isotopes Ore genesis Zajkan Tarom-Hashtjin Iran |
| ISSN号 | 0169-1368 |
| DOI | 10.1016/j.oregeorev.2019.05.014 |
| 英文摘要 | In the Zajkan Pb-Zn-Cu (Au-Ag) deposit of the Tarom-Hashtjin metallogenic belt (THMB), northwest Iran, mineralization occurs as quartz-base metal sulfide veins hosted by Eocene volcanic and volcaniclastic rocks of the Karaj Formation. Four stages of ore formation are identified at Zajkan: (1) quartz-chalcopyrite-pyrite veins, (2) quartz-galena-sphalerite +/- chalcopyrite +/- pyrite veins and breccias, (3) quartz-hematite veins and breccias, and (4) barren quartz-carbonate veinlets. The primary metallic minerals are pyrite, chalcopyrite, sphalerite, galena, and trace amounts of hematite; gangue minerals are mainly quartz, sericite, chlorite, and calcite. The main wall-rock alteration is silicification, and intermediate argillic, and propylitic alteration. The coexistence of different types of fluid inclusions (LV, VL, and V) in individual fluid inclusion assemblages in quartz and sphalerite suggests boiling and heterogeneous trapping. Excluding the heterogeneously entrapped fluid inclusions, the microthermometric measurements of primary LV fluid inclusion assemblages in quartz and sphalerite indicate that the veins were formed at temperatures between 217 and 273 degrees C from fluids with salinities between 1.7 and 6.4 wt% NaCl equiv. The oxygen isotopic compositions (delta O-18(water-VSMOW) of +3.7 to +1.1 parts per thousand) indicate that the ore-forming fluids were mainly derived from magmatic water with the input of meteoric water in the later ore-stages. Sulfur isotopic values of sulfide minerals vary over a narrow range from -5.0 to -0.9 parts per thousand(VCDT) (averaging -2.2 parts per thousand(VCDT)), suggesting that sulfur was derived from a homogeneous magmatic source. The fluid inclusion and stable isotope data indicate that fluid boiling and mixing facilitated hydrothermal alteration and mineralization at Zajkan. Our data suggest that the Zajkan deposit is an intermediate-sulficiation style epithermal mineralization. The estimated ore formation depth of Zajkan indicates minor denudation in the region and may imply a great prospecting potential for other epithermal mineralization in the THMB. |
| WOS关键词 | AU-AG DEPOSIT ; ACTIVE GEOTHERMAL SYSTEMS ; CREEDE MINING DISTRICT ; SAN-JUAN MOUNTAINS ; GOLD DEPOSIT ; HYDROTHERMAL ALTERATION ; FUJIAN PROVINCE ; COPPER-DEPOSIT ; U-PB ; CHINA IMPLICATION |
| 资助项目 | Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China[KLMR2017-01] ; University of Zanjan, Zanjan, Iran |
| WOS研究方向 | Geology ; Mineralogy ; Mining & Mineral Processing |
| 语种 | 英语 |
| WOS记录号 | WOS:000472686500033 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China ; Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China ; University of Zanjan, Zanjan, Iran ; University of Zanjan, Zanjan, Iran ; Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China ; Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China ; University of Zanjan, Zanjan, Iran ; University of Zanjan, Zanjan, Iran ; Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China ; Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China ; University of Zanjan, Zanjan, Iran ; University of Zanjan, Zanjan, Iran ; Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China ; Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China ; University of Zanjan, Zanjan, Iran ; University of Zanjan, Zanjan, Iran |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/92662]  |
| 专题 | 地质与地球物理研究所_中国科学院矿产资源研究重点实验室 |
| 通讯作者 | Kouhestani, Hossein |
| 作者单位 | 1.Univ Zanjan, Fac Sci, Dept Geol, Zanjan 45195313, Iran 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 3.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Kouhestani, Hossein,Mokhtari, Mir Ali Asghar,Qin, Kezhang,et al. Fluid inclusion and stable isotope constraints on ore genesis of the Zajkan epithermal base metal deposit, Tarom-Hashtjin metallogenic belt, NW Iran[J]. ORE GEOLOGY REVIEWS,2019,109:564-584. |
| APA | Kouhestani, Hossein,Mokhtari, Mir Ali Asghar,Qin, Kezhang,&Zhao, Junxing.(2019).Fluid inclusion and stable isotope constraints on ore genesis of the Zajkan epithermal base metal deposit, Tarom-Hashtjin metallogenic belt, NW Iran.ORE GEOLOGY REVIEWS,109,564-584. |
| MLA | Kouhestani, Hossein,et al."Fluid inclusion and stable isotope constraints on ore genesis of the Zajkan epithermal base metal deposit, Tarom-Hashtjin metallogenic belt, NW Iran".ORE GEOLOGY REVIEWS 109(2019):564-584. |
入库方式： OAI收割
来源：地质与地球物理研究所
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