Geochemistry of the La'erma and Qiongmo Au-Se deposits in the western Qinling Mountains, China
文献类型：期刊论文
| 作者 | Liu, JJ; Zheng, MH; Liu, JM; Su, WC |
| 刊名 | ORE GEOLOGY REVIEWS
 |
| 出版日期 | 2000-09-01 |
| 卷号 | 17期号:1-2页码:91-111 |
| 关键词 | gold deposits selenium geochemistry Au-Se association western Qinling Mountains China |
| ISSN号 | 0169-1368 |
| 文献子类 | Review |
| 英文摘要 | The microdisseminated gold deposits at La'erma and Qiongmo are typically hosted in Cambrian chert formation in western Qinling Mountains, China. Both in the host rocks and the gold ores selenium is present in high abundance, as selenide minerals or isomorphous admixtures in sulfides, with independent selenium orebodies can be delineated in some localities. Intergrowth of selenides and native gold is commonly observed. Selenium is also noticed in considerably high content in fluid inclusions in quartz and barite, which are closely related to gold mineralization. Studies show that gold and selenium may have been transported together in ore solutions as Au-S-Se complex. In view of the wide difference in electrode potential between selenium and sulfur, the two elements would be separated under oxidizing conditions. Selenium would mostly occur as isomorphic mixtures in sulfides during the early stage of mineralization when the environment is more reducing but would precipitate as selenides during the late, oxidizing stage. Simultaneous enrichment of gold and selenium would be favored by boiling of the ore solution or mixing of on solution with oxygen-rich water at shallow depths. (C) 2000 Elsevier Science B.V. All rights reserved. |
| WOS关键词 | BEARING ORE-DEPOSITS ; PHASE-RELATIONS ; CALCULATED EQUILIBRIA ; AG MINERALIZATION ; BLACK SHALES ; TELLURIDES ; SULFIDES ; GENESIS ; OXIDES ; SELENIDES |
| WOS研究方向 | Geology ; Mineralogy ; Mining & Mineral Processing |
| 语种 | 英语 |
| WOS记录号 | WOS:000089250400004 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/76075]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Liu, JJ |
| 作者单位 | 1.Chinese Acad Sci, Open Lab Ore Deposit Geochem, Inst Geochem, Guiyang 550002, Guizhou Prov, Peoples R China 2.Chengdu Univ Sci & Technol, Chengdu 610059, Peoples R China 3.Nanjing Univ, State Key Lab Mineral Deposits Res, Nanjing 210093, Peoples R China 4.CAS, Res Ctr Mineral Resources Explorat, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, JJ,Zheng, MH,Liu, JM,et al. Geochemistry of the La'erma and Qiongmo Au-Se deposits in the western Qinling Mountains, China[J]. ORE GEOLOGY REVIEWS,2000,17(1-2):91-111. |
| APA | Liu, JJ,Zheng, MH,Liu, JM,&Su, WC.(2000).Geochemistry of the La'erma and Qiongmo Au-Se deposits in the western Qinling Mountains, China.ORE GEOLOGY REVIEWS,17(1-2),91-111. |
| MLA | Liu, JJ,et al."Geochemistry of the La'erma and Qiongmo Au-Se deposits in the western Qinling Mountains, China".ORE GEOLOGY REVIEWS 17.1-2(2000):91-111. |
入库方式： OAI收割
来源：地质与地球物理研究所
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