Study on the fluid inclusions and S-H-O isotopic compositions of skarn-porphyry-type W-Mo deposits in Chizhou area in the Middle-Lower Yangtze Valley
文献类型：期刊论文
| 作者 | Song GuoXue1,2; Qin KeZhang1; Li GuangMing1 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2010-09-01 |
| 卷号 | 26期号:9页码:2768-2782 |
| 关键词 | Jitoushan W-mo Deposit Baizhangyan W-mo Deposit Matou Mo Deposit Fluid Inclusion Ore-forming Fluid Chizhou Area |
| ISSN号 | 1000-0569 |
| 文献子类 | Article |
| 英文摘要 | Chizhou area of Anhui Province is located in the transition zone between the Lower Yangtze depression and the Jiangnan Ancient Continent in the Middle-Lower Yangtze Valley. There are great breakthroughs in ore prospecting and exploration about tungsten-molybdenum polymetallic deposits in Chizhou area recently. The Jitoushan skarn-porphyry type W-Mo deposit, the Baizhangyan skarn-porphyry type W-Mo deposit and the Matou porphyry-type Mo deposit are three typical ore deposits among them. The Mo and W are mainly occurred in the skarn ore bodies, and porphyry orebodies have been found in the deep by geological exploration in the Jitoushan and Baizhangyan ore districts. The Mo is mainly occurred in the contact zone between granodiorite porphyry and the surrounding wall rocks in Matou ore district. In the present study of fluid inclusions, aqueous-rich (L + V), daughter mineral-bearing (L + V + S), and a few CO(2)-bearing (L + L(CO2) + V(CO2)) three phase fluid inclusions have been found in the ore-forming fluids of W-Mo deposits in Chizhou area, aqueous-rich (L + V) fluid inclusions are the most. The evolution of ore-forming fluid can be divided into three stages: The early-stage fluid has the homogenization temperature range of 350 similar to 500 degrees C and the depth range of 1.5 similar to 2.5km. The initial fluid has the salinity range of 17% similar to 25% NaCleqv and is rich in the gas such as H(2)O, CO(2) and CH(4), then the initial fluid was divided into high salinity fluid and low salinity fluid rich in gas. The middle-stage fluid has the homogenization temperature range of 170 similar to 360 degrees C, the salinity range of 2% similar to 24% NaCleqv and the depth range of 0.5 similar to 1. 7km, with riching in CO(2), H(2)O, CH, and H(2)S in fluid inclusions, rich in fluid inclusions. The fluid-mixing function caused the metals such as W, Mo, Pb and Zn to precipitate and mineralize. The late-stage fluid has the homogenization temperature range of 100 similar to 160 degrees C, the salinity range of 1% similar to 10% NaCleqv and the depth range under 0. 6km, this stage is irrelevant with mineralization. The ore-forming fluid was formed by mixing of magma water, meteoric water and formation water; this was implied by the isotope compositions of H-O isotopes from ore bearing quartz veins and S isotopes from sulfide. Fluid mixing is the main ore-forming mechanism of W, Mo, Pb and Zn in the W-Mo polymetallic deposits in Chizhou area. |
| WOS关键词 | COPPER-DEPOSIT ; ORE ; SALINITY |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000283384100019 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/72684]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Song GuoXue |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Mineral Resources, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Song GuoXue,Qin KeZhang,Li GuangMing. Study on the fluid inclusions and S-H-O isotopic compositions of skarn-porphyry-type W-Mo deposits in Chizhou area in the Middle-Lower Yangtze Valley[J]. ACTA PETROLOGICA SINICA,2010,26(9):2768-2782. |
| APA | Song GuoXue,Qin KeZhang,&Li GuangMing.(2010).Study on the fluid inclusions and S-H-O isotopic compositions of skarn-porphyry-type W-Mo deposits in Chizhou area in the Middle-Lower Yangtze Valley.ACTA PETROLOGICA SINICA,26(9),2768-2782. |
| MLA | Song GuoXue,et al."Study on the fluid inclusions and S-H-O isotopic compositions of skarn-porphyry-type W-Mo deposits in Chizhou area in the Middle-Lower Yangtze Valley".ACTA PETROLOGICA SINICA 26.9(2010):2768-2782. |
入库方式： OAI收割
来源：地质与地球物理研究所
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