Geochronology and ore-forming fluids in the Jinchang skarn gold-copper deposit, Yinan County, western Shandong Province | |
Hu FangFang1; Wang Yong1; Fan HongRui1; Zheng XiaoLi2; Jiao Peng3 | |
刊名 | ACTA PETROLOGICA SINICA
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2010-05-01 | |
卷号 | 26期号:5页码:1503-1511 |
关键词 | Geochronology Fluid Inclusion Jinchang Gold-copper Deposit Yinan County Western Shandong Province |
ISSN号 | 1000-0569 |
文献子类 | Article |
英文摘要 | The Jinchang skarn Au-Cu deposit is located in Yinan County, western Shandong Province, China. It is hosted by Neoproterozoic to Cambrian sedimentary elastic sequences intercalated with limestone and marble units, intruded by adamellite and granitic porphyries. In the skarn facies, andradite and diopside comprise the main prograde skarn minerals, whereas epidote, chlorite, tremolite, actinolite and calcite are the principal retrograde skarn minerals. Single grain and low background Rb-Sr isochrone dating on biotite from prograde and retrograde skarn gives 133 +/- 6Ma and 128 +/- 2Ma, respectively. Four types of fluid inclusions were distinguished; (1) daughter mineral-bearing inclusions; (2) vapor-rich inclusions; (3) CO(2)-H(2)O inclusions, and (4) salt-saturated inclusions. Fluid inclusions associated with garnet (prograde skarn stage) display high homogenization temperatures and high salinities (530 similar to 570 degrees C; 39. 9% similar to 60. 4% NaCl equiv.). Fluid inclusions associated with epidote (retrograde skarn stage) also record higher homogenization temperatures and salinities (451 similar to 580 degrees C; 39. 3% similar to 60. 7% NaCl equiv.). Fluid inclusions associated with quartz-sulfide stage show two intervals of homogenization, 320 similar to 450 degrees C and 108 similar to 291 degrees C. Some fluid inclusions in garnet contain hematite or magnetite daughters, suggesting an oxidizing magmatic environment. Overall, the Jinchang deposit is interpreted as an oxidized Au-Cu skarn based on the mineralogy and fluid inclusion characteristics. |
WOS研究方向 | Geology |
语种 | 英语 |
出版者 | SCIENCE CHINA PRESS |
WOS记录号 | WOS:000278597800015 |
内容类型 | 期刊论文 |
源URL | [http://ir.iggcas.ac.cn/handle/132A11/72596] ![]() |
专题 | 中国科学院地质与地球物理研究所 |
通讯作者 | Hu FangFang |
作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 2.Shandong Gold Co Ltd, Laizhou 264000, Peoples R China 3.Shandong Gold Co Ltd, Yinan Gold Mine, Yinan 276300, Peoples R China |
推荐引用方式 GB/T 7714 | Hu FangFang,Wang Yong,Fan HongRui,et al. Geochronology and ore-forming fluids in the Jinchang skarn gold-copper deposit, Yinan County, western Shandong Province[J]. ACTA PETROLOGICA SINICA,2010,26(5):1503-1511. |
APA | Hu FangFang,Wang Yong,Fan HongRui,Zheng XiaoLi,&Jiao Peng.(2010).Geochronology and ore-forming fluids in the Jinchang skarn gold-copper deposit, Yinan County, western Shandong Province.ACTA PETROLOGICA SINICA,26(5),1503-1511. |
MLA | Hu FangFang,et al."Geochronology and ore-forming fluids in the Jinchang skarn gold-copper deposit, Yinan County, western Shandong Province".ACTA PETROLOGICA SINICA 26.5(2010):1503-1511. |
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