Origin and evolution of hydrothermal fluids in the Marshoun epithermal Pb-Zn-Cu (Ag) deposit, Tarom-Hashtjin metallogenic belt, NW Iran
文献类型：期刊论文
| 作者 | Kouhestani, Hossein4; Mokhtari, Mir Ali Asghar4; Qin, Kezhang1,2,3; Zhao, Junxing3 |
| 刊名 | ORE GEOLOGY REVIEWS
 |
| 出版日期 | 2019-10-01 |
| 卷号 | 113页码:19 |
| 关键词 | Intermediate-sulfidation Fluid inclusion Oxygen and sulfur isotopes Marshoun Tarom-Hashtjin Iran |
| ISSN号 | 0169-1368 |
| DOI | 10.1016/j.oregeorev.2019.103087 |
| 英文摘要 | The Marshoun epithermal Pb-Zn-Cu (Ag) deposit is located in the Tarom-Hashtjin metallogenic belt (THMB), northwest Iran. The epithermal base metal veins are mainly hosted in Eocene volcanic and volcaniclastic rocks of the Karaj Formation, and late Eocene pyroxene quartz monzodiorite. The mineralization process can be divided into five stages: (1) quartz-chalcopyrite-pyrite veins and breccias, (2) quartz (calcite)-sphalerite-galena +/- chalcopyrite +/- pyrite veins and breccias, (3) barren post-ore quartz veinlets, (4) barren post-ore calcite veinlets, and (5) supergene mineral assemblages. The primary metallic minerals are pyrite, chalcopyrite, sphalerite, and galena; gangue minerals are mainly quartz, calcite, sericite, and chlorite. The main wall-rock alteration is silicification, intermediate argillic, carbonate, and propylitic alteration. Microthermometric measurements of primary LV fluid inclusion assemblages in quartz and sphalerite indicate that the veins were mainly formed at temperatures between 173 and 285 degrees C from fluids with salinities between 3.4 and 6.3 wt% NaCl equiv. Coexisting LV, VL, and V inclusions in quartz and sphalerite provide evidence for boiling in ore-stage breccia and veins. Additionally, the occurrence of bladed calcite as well as plumose and colloform/crustiform banded quartz in the ore zones and the presence of hydrothermal breccias are consistent with boiling. Obtained oxygen and sulfur isotope compositions (delta O-18(water) = +9.2 parts per thousand to + 1.5 parts per thousand; delta S-34(H2s) = -10.0 parts per thousand to -5.7 parts per thousand) indicate there was a major contribution from a magmatic component to metallogenesis. The fluid inclusion and stable isotope data indicate that fluid boiling and mixing facilitated hydrothermal alteration and mineralization at Marshoun. The Marshoun deposit is interpreted as an intermediate-sulfidation style of epithermal mineralization. Our data suggest that the epithermal mineralization in the THMB are related to late Eocene (ca. 36-37 Ma) shallow magmatic-hydrothermal activity. The altered Eocene volcanic-subvolcanic rocks, particularly at the intersection of subvolcanic rocks with faults were the most favorable locus for exploration targeting of epithermal ores at THMB. |
| WOS关键词 | GOLD-SILVER DEPOSIT ; LEAD-ZINC VEIN ; STABLE-ISOTOPE ; FRESNILLO DISTRICT ; FUJIAN PROVINCE ; COPPER-DEPOSIT ; ORE GENESIS ; AU DEPOSIT ; U-PB ; INCLUSION EVIDENCE |
| 资助项目 | Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China[KLMR2017-01] ; office of Vice Chancellor for Research and Technology, University of Zanjan, Zanjan, Iran |
| WOS研究方向 | Geology ; Mineralogy ; Mining & Mineral Processing |
| 语种 | 英语 |
| WOS记录号 | WOS:000491635200004 |
| 出版者 | ELSEVIER |
| 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 ; office of Vice Chancellor for Research and Technology, University of Zanjan, Zanjan, Iran ; office of Vice Chancellor for Research and Technology, 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 ; office of Vice Chancellor for Research and Technology, University of Zanjan, Zanjan, Iran ; office of Vice Chancellor for Research and Technology, 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 ; office of Vice Chancellor for Research and Technology, University of Zanjan, Zanjan, Iran ; office of Vice Chancellor for Research and Technology, 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 ; office of Vice Chancellor for Research and Technology, University of Zanjan, Zanjan, Iran ; office of Vice Chancellor for Research and Technology, University of Zanjan, Zanjan, Iran |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/95737]  |
| 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 Chinese Acad Sci, Beijing 100049, Peoples R China 2.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 4.Univ Zanjan, Fac Sci, Dept Geol, Zanjan 45195313, Iran |
| 推荐引用方式 GB/T 7714 | Kouhestani, Hossein,Mokhtari, Mir Ali Asghar,Qin, Kezhang,et al. Origin and evolution of hydrothermal fluids in the Marshoun epithermal Pb-Zn-Cu (Ag) deposit, Tarom-Hashtjin metallogenic belt, NW Iran[J]. ORE GEOLOGY REVIEWS,2019,113:19. |
| APA | Kouhestani, Hossein,Mokhtari, Mir Ali Asghar,Qin, Kezhang,&Zhao, Junxing.(2019).Origin and evolution of hydrothermal fluids in the Marshoun epithermal Pb-Zn-Cu (Ag) deposit, Tarom-Hashtjin metallogenic belt, NW Iran.ORE GEOLOGY REVIEWS,113,19. |
| MLA | Kouhestani, Hossein,et al."Origin and evolution of hydrothermal fluids in the Marshoun epithermal Pb-Zn-Cu (Ag) deposit, Tarom-Hashtjin metallogenic belt, NW Iran".ORE GEOLOGY REVIEWS 113(2019):19. |
入库方式： OAI收割
来源：地质与地球物理研究所
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