Two origins of illite at the Dexing porphyry Cu deposit, East China: Implications for ore-forming fluid constraint on illite crystallinity
文献类型：期刊论文
| 作者 | Jin, ZD; Zhu, JC; Ji, JF; Li, FC; Lu, XW |
| 刊名 | CLAYS AND CLAY MINERALS
 |
| 出版日期 | 2002-06-01 |
| 卷号 | 50期号:3页码:381-387 |
| 关键词 | Alteration Hydrothermal Fluid Kubler Index Low-grade Metamorphism Porphyry Cu Deposit |
| 文献子类 | Article |
| 英文摘要 | Illite is a distinctive clay mineral formed by K alteration within hydrothermal alteration zones in porphyry Cu deposits. Based on differences in spatial distribution, Kubler index, number of swelling layers, and polytype, two kinds of illite are recognized within the Dexing porphyry Cu deposit, East China. One is a hydrothermal mineral within hydrothermally-altered granodiorite porphyry and altered tuffaceous phyllite near the contact zone with the granodiorite porphyry cupola. The hydrothermal illite is formed by illitization of plagioclase and/or micas during hydrothermal fluid-rock interaction. The considerable variation of their higher Kubler indices (0.17-1.41 degreesDelta2theta) with swelling layer is affected by fluid/rock ratio or fluid flux. The other type of illite is a product of low-grade metamorphism Within tuffaceous phyllite away from the porphyry cupola (>2 km), and has a lower Kubler index (0.06-0.13 degreesDelta2theta), a 2M(1) polytype, and no swelling layers. We suggest that, within the mineralized alteration zone, the lower the Kubler index, the stronger the degree of alteration, and the higher the copper grade. This is caused by a higher fluid/rock ratio in the middle-upper portions of the contact zone. |
| WOS关键词 | RAY-DIFFRACTION PATTERNS ; HYDROTHERMAL SYSTEM ; CLAY-MINERALS ; SMECTITE ; TRANSFORMATION ; GEOTHERMOMETER ; TEMPERATURE ; REFLECTANCE ; TRANSITION ; DIAGENESIS |
| 语种 | 英语 |
| WOS记录号 | WOS:000176966600011 |
| 出版者 | CLAY MINERALS SOCIETY |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/68343]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Jin, ZD |
| 作者单位 | 1.Chinese Acad Sci, Nanjing Inst Geog & Limnol, Lake Sediment & Environm Lab, Nanjing 210008, Peoples R China 2.Nanjing Univ, Dept Earth Sci, State Key Lab Res Mineral Deposits, Nanjing 210093, Peoples R China 3.Chinese Acad Sci, Inst Geog, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jin, ZD,Zhu, JC,Ji, JF,et al. Two origins of illite at the Dexing porphyry Cu deposit, East China: Implications for ore-forming fluid constraint on illite crystallinity[J]. CLAYS AND CLAY MINERALS,2002,50(3):381-387. |
| APA | Jin, ZD,Zhu, JC,Ji, JF,Li, FC,&Lu, XW.(2002).Two origins of illite at the Dexing porphyry Cu deposit, East China: Implications for ore-forming fluid constraint on illite crystallinity.CLAYS AND CLAY MINERALS,50(3),381-387. |
| MLA | Jin, ZD,et al."Two origins of illite at the Dexing porphyry Cu deposit, East China: Implications for ore-forming fluid constraint on illite crystallinity".CLAYS AND CLAY MINERALS 50.3(2002):381-387. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。