Contrasting fluid types at the Nevoria gold deposit in the Southern Cross greenstone belt, Western Australia: Implications of auriferous fluids depositing ores within an Archean banded iron-formation
文献类型：期刊论文
| 作者 | Fan, HR; Groves, DI; Mikucki, EJ; McNaughton, NJ |
| 刊名 | ECONOMIC GEOLOGY AND THE BULLETIN OF THE SOCIETY OF ECONOMIC GEOLOGISTS
 |
| 出版日期 | 2000-11-01 |
| 卷号 | 95期号:7页码:1527-1536 |
| ISSN号 | 0361-0128 |
| 文献子类 | Article |
| 英文摘要 | Two main hydrothermal mineral assemblages have been identified in the banded iron-formation-hosted gold mine at Nevoria. The earlier quartz +/- garnet +/- clinopyroxene +/- calcite vein group formed pre- or synmetamorphic, and the later quartz +/- pyrrhotite +/- pyrite vein group appears to be postmetamorphic and related to gold mineralization. Fluid inclusion characteristics are obviously different in those two vein groups. Microthermometric analysis indicates that the fluids with metamorphic alteration are aqueous, CO2-rich or CO2-absent solutions; no or very small amounts of CH4 were involved in this fluid. Mineralizing fluids were a CH, CO2-H2O solution. The initial auriferous fluids were CH4 dominant. Heterogeneous trapping, interaction of the hydrothermal fluid with graphite-bearing rocks, or fluid mixing may cause large variations of CH4/CO2 ratios or a X-CH4 of CH4-CO2-H2O inclusions, particularly in mineralized quartz-pyrrhotite veins. Phase mixing or separating, resulting in an increase in pH and f(O2), together with loss of reduced sulfur by mineral-fluid reactions and precipitation of sulfides, led to the breakdown of the gold-transporting complexes. |
| WOS关键词 | X PROPERTIES ; INCLUSIONS |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000165817900008 |
| 出版者 | ECONOMIC GEOLOGY PUBL CO |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/76357]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Fan, HR |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Univ Western Australia, Dept Geol & Geophys, Key Ctr Teaching & Res Strateg Mineral Deposits, Nedlands, WA 6907, Australia |
| 推荐引用方式 GB/T 7714 | Fan, HR,Groves, DI,Mikucki, EJ,et al. Contrasting fluid types at the Nevoria gold deposit in the Southern Cross greenstone belt, Western Australia: Implications of auriferous fluids depositing ores within an Archean banded iron-formation[J]. ECONOMIC GEOLOGY AND THE BULLETIN OF THE SOCIETY OF ECONOMIC GEOLOGISTS,2000,95(7):1527-1536. |
| APA | Fan, HR,Groves, DI,Mikucki, EJ,&McNaughton, NJ.(2000).Contrasting fluid types at the Nevoria gold deposit in the Southern Cross greenstone belt, Western Australia: Implications of auriferous fluids depositing ores within an Archean banded iron-formation.ECONOMIC GEOLOGY AND THE BULLETIN OF THE SOCIETY OF ECONOMIC GEOLOGISTS,95(7),1527-1536. |
| MLA | Fan, HR,et al."Contrasting fluid types at the Nevoria gold deposit in the Southern Cross greenstone belt, Western Australia: Implications of auriferous fluids depositing ores within an Archean banded iron-formation".ECONOMIC GEOLOGY AND THE BULLETIN OF THE SOCIETY OF ECONOMIC GEOLOGISTS 95.7(2000):1527-1536. |
入库方式： OAI收割
来源：地质与地球物理研究所
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