Geology and ore-forming fluid evolution of the Aktogai giant porphyry Cu deposit, Kazakhstan
文献类型：期刊论文
| 作者 | Li, Changhao1,2,3; Shen, Ping1,2,3; Pan, Hongdi4; Cao, Chong1,2,3; Seitmuratova, Eleonora5 |
| 刊名 | JOURNAL OF ASIAN EARTH SCIENCES
 |
| 出版日期 | 2018-10-01 |
| 卷号 | 165页码:192-209 |
| 关键词 | Hydrothermal alteration Fluid evolution Metallogenic mechanism The Aktogai deposit The Central Kazakhstan |
| ISSN号 | 1367-9120 |
| DOI | 10.1016/j.jseaes.2018.07.009 |
| 英文摘要 | The Aktogai Group (more than 12.5Mt of Cu and 80t of Au) is located in the western part of the Central Asia' Orogenic Belt (CAOB). The mineralization of the Aktogai deposit is associated with the Early Carboniferous tonalite porphyry which intruded into the Koldar complex. The ore-forming tonalite porphyry has higher oxygei fugacity and sulfur contents than those of wall rocks based on results of mineralogical chemistry analyses Hydrothermal fluid activities result in the potassic, sericite(-chlorite) and propylitic alteration, and are associated with disseminated and/or vein mineralization. The alteration and mineralization include three stages Potassic stage is characterized by hydrothermal K-feldspar, biotite, magnetite, "A" veins and disseminated mineralization. Sericite(-chlorite) stage that partly overprinted on potassic stage is characterized by sericite chlorite, "C" veins and disseminated mineralization. Propylitic stage is characterized by chlorite, epidote and "C" veins, and develops in the tonalite porphyry and wall rocks. Five types of fluid inclusions have been recognize in the Aktogai deposit, including liquid-rich (L-type), vapor-rich (V-type), daughter mineral-bearing (S-type) CO2-bearing (C-type) and minor SO2-bearing fluid inclusions. In the potassic stage, ore-forming fluid belongs H2O-NaCl-CO2 system with four types fluid inclusions, homogeneous temperatures and salinities of fluid in elusions are 320 degrees C to 448 degrees C and 0.35 wt% to 51.08 wt%, respectively. In the sericite(-chlorite) stage, the fluff belongs to H2O-NaCl-CO2 system with L-type, V-type and C-type fluid inclusions, homogeneous temperature and salinities of fluid inclusions are 243 degrees C to 315 degrees C and 1.22 wt% to 13.27 wt%, respectively. In the propylitio stage, the fluid belongs to H2O-NaCl system with L-type and V-type fluid inclusions, homogeneous temperature and salinities of fluid inclusions are 211 degrees C to 328 degrees C and 0.35 wt% to 11.46 wt%, respectively. A relativell negative delta S-34 parts per thousand values (-4.61 parts per thousand to -3.18 parts per thousand) indicate that the sulfur derived from a high oxygen fugacity magma. Decreases of the temperature, pressure and oxygen fugacity of the ore-forming fluid result in meta precipitation in the Aktogai deposit. |
| WOS关键词 | ASIAN OROGENIC BELT ; PALEOZOIC CRUSTAL GROWTH ; COPPER-DEPOSIT ; MICROPHENOCRYSTIC APATITE ; ISOTOPE GEOCHEMISTRY ; TECTONIC SETTINGS ; SULFIDE MINERALS ; OXYGEN FUGACITY ; EAST KOUNRAD ; SO3 CONTENTS |
| 资助项目 | National Natural Science Foundation of China[41390442] ; National Natural Science Foundation of China[U1303293] ; National Natural Science Foundation of China[21850490] ; Open foundation of MLR key laboratory of Metallogeny and Mineral Assessment[ZS1701] ; National Key R&D Program of China[2017YFC0601201] ; National Scientific and Technological Support Project[2011BAB06B01] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000449447300012 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; Open foundation of MLR key laboratory of Metallogeny and Mineral Assessment ; Open foundation of MLR key laboratory of Metallogeny and Mineral Assessment ; National Key R&D Program of China ; National Key R&D Program of China ; National Scientific and Technological Support Project ; National Scientific and Technological Support Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Open foundation of MLR key laboratory of Metallogeny and Mineral Assessment ; Open foundation of MLR key laboratory of Metallogeny and Mineral Assessment ; National Key R&D Program of China ; National Key R&D Program of China ; National Scientific and Technological Support Project ; National Scientific and Technological Support Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Open foundation of MLR key laboratory of Metallogeny and Mineral Assessment ; Open foundation of MLR key laboratory of Metallogeny and Mineral Assessment ; National Key R&D Program of China ; National Key R&D Program of China ; National Scientific and Technological Support Project ; National Scientific and Technological Support Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Open foundation of MLR key laboratory of Metallogeny and Mineral Assessment ; Open foundation of MLR key laboratory of Metallogeny and Mineral Assessment ; National Key R&D Program of China ; National Key R&D Program of China ; National Scientific and Technological Support Project ; National Scientific and Technological Support Project |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/89444]  |
| 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 | Shen, Ping |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Changan Univ, Coll Earth Sci, Xian 710054, Shaanxi, Peoples R China 5.K Satpaev Inst Geol Sci, Lab Geol Format, Alma Ata 050010, Kazakhstan |
| 推荐引用方式 GB/T 7714 | Li, Changhao,Shen, Ping,Pan, Hongdi,et al. Geology and ore-forming fluid evolution of the Aktogai giant porphyry Cu deposit, Kazakhstan[J]. JOURNAL OF ASIAN EARTH SCIENCES,2018,165:192-209. |
| APA | Li, Changhao,Shen, Ping,Pan, Hongdi,Cao, Chong,&Seitmuratova, Eleonora.(2018).Geology and ore-forming fluid evolution of the Aktogai giant porphyry Cu deposit, Kazakhstan.JOURNAL OF ASIAN EARTH SCIENCES,165,192-209. |
| MLA | Li, Changhao,et al."Geology and ore-forming fluid evolution of the Aktogai giant porphyry Cu deposit, Kazakhstan".JOURNAL OF ASIAN EARTH SCIENCES 165(2018):192-209. |
入库方式： OAI收割
来源：地质与地球物理研究所
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