Geology, Ar-Ar age and mineral assemblage of Eocene skarn Cu-Au +/- Mo deposits in the Southeastern Gangdese arc, Southern Tibet: Implications for deep exploration
文献类型：期刊论文
| 作者 | Li, Guangming; Qin, Kezhang; Ding, Kuishou; Liu, Tiebing; Li, Jinxiang; Wang, Shaohuai; Jiang, Shanyuan; Zhang, Xingchun |
| 刊名 | RESOURCE GEOLOGY
 |
| 出版日期 | 2006 |
| 卷号 | 56期号:3页码:315-336 |
| 关键词 | skarn Cu +/- Au Mo deposits Ar-Ar age mineral assemblage fluid inclusion Shannan SE-Gangdese Tibet |
| ISSN号 | 1344-1698 |
| 文献子类 | Article |
| 英文摘要 | Medium- and large-scaled skarn Cu-Au -/+ Mo deposits, e.g. Kelu, Liebu, Chongmuda and Chenba among others, are distributed in Shannan area of the Gangdese Cu-Au metallogenic belt. Intrusions-related skarn copper mineralization belongs to high K and calc-alkaline rock series, located in late collision volcano-magmatic arc and formed between 20 to 30 Ma. Copper mineralization occurs at exocontact zone of the lower Cretaceous Bima Group carbonate and other calcareous-bearing sedimentary rocks with intrusions. At present, three main mineralization types are identified, including skarn type, hydrothermal vein type and porphyry type. Mineralizing associations are Cu-Mo, Cu-Au and Cu. In ore districts, those mineralization types form an entire porphyry-skarn Cu-Au Mo ore-forming system. Alterations of the exocontact are mainly skarnization and hornfelsization, while the alterations of the endocontact are mainly sericitization, silicification, and chloritization of intrusion. In the study area, the endoskarn is not well developed. Copper mineralization occurs mainly in the exocontact in the form of stratoid, lenticular and pockety ore body. Veined mineralization can be seen in marblized and hornfelsed siltstone, being away from the contact zone. In the endocontact, the mineralization is mainly veinlet-like and disseminated. In Shannan area, skarnization can be divided into early skarnization stage and late hydrous silicate stage. The early skarnization stage is featured by mainly andradite and grossular skarn, containing minor diopside, hedenbergite, magnetite and some copper minerals; and the late hydrous silicate stage is of replacement of garnet skarn by chlorite, epidote, quartz and calcite together with sulfides precipitation. The latter is the main stage of copper mineralization. Bornite is the dominant ore mineral associated with minor chalcopyrite and pyrite; and gold as well as silver are distributed in bornite and wittichenite. |
| WOS关键词 | ZONATION PATTERNS ; VOLCANIC-ROCKS ; EVOLUTION ; TEXTURES ; REGIONS ; FLUIDS ; JAPAN |
| WOS研究方向 | Geology ; Mineralogy |
| 语种 | 英语 |
| WOS记录号 | WOS:000240255600007 |
| 出版者 | SOC RESOURCE GEOLOGY |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/66707]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Li, Guangming |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 2.China Explorat & Engn Bur, Inst 2, Fujian 351111, Peoples R China 3.Chinese Acad Sci, Inst Geochem, Guiyang 550002, Guizhou, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Guangming,Qin, Kezhang,Ding, Kuishou,et al. Geology, Ar-Ar age and mineral assemblage of Eocene skarn Cu-Au +/- Mo deposits in the Southeastern Gangdese arc, Southern Tibet: Implications for deep exploration[J]. RESOURCE GEOLOGY,2006,56(3):315-336. |
| APA | Li, Guangming.,Qin, Kezhang.,Ding, Kuishou.,Liu, Tiebing.,Li, Jinxiang.,...&Zhang, Xingchun.(2006).Geology, Ar-Ar age and mineral assemblage of Eocene skarn Cu-Au +/- Mo deposits in the Southeastern Gangdese arc, Southern Tibet: Implications for deep exploration.RESOURCE GEOLOGY,56(3),315-336. |
| MLA | Li, Guangming,et al."Geology, Ar-Ar age and mineral assemblage of Eocene skarn Cu-Au +/- Mo deposits in the Southeastern Gangdese arc, Southern Tibet: Implications for deep exploration".RESOURCE GEOLOGY 56.3(2006):315-336. |
入库方式： OAI收割
来源：地质与地球物理研究所
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