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首页> 外文期刊>Precambrian Research >A shear-hosted Au-Cu-Bi metallogenic event at similar to 1660 Ma in the Tennant Creek goldfield (northern Australia) defined by in-situ monazite U-Pb-Th dating
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A shear-hosted Au-Cu-Bi metallogenic event at similar to 1660 Ma in the Tennant Creek goldfield (northern Australia) defined by in-situ monazite U-Pb-Th dating

机译：在由原位Monazite U-PB-Th约会定义的Tennant Creek Goldfield（北澳大利亚）类似于1660 mA的剪切托管的Au-Cu-Bi Metallenic事件

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摘要

High-grade Au, Cu and Bi ores in the Tennant Creek goldfield have been mined from hydrothermal magnetite and/or hematite-rich ironstone bodies. Less well known is a style of Au-Cu-Bi mineralisation hosted by quartz vein systems within shear zones outside ironstones. We report ion probe (SHRIMP) U-Pb-Th ages of 1659 +/- 13 Ma and 1659 +/- 15 Ma for hydrothermal monazite associated with this mineralisation style at the Orlando East Au-Cu-Bi deposit and Navigator 6 Au prospect, respectively. The dated monazite at Orlando East is intergrown with Cu and Bi sulfides and Au in quartz-chlorite veins within a shear zone. At Navigator 6 the monazite occurs both in late-stage chalcopyrite-bearing quartz-hematite veins and within earlier-formed sheared chloritic breccia that also contains anomalous Au.
机译：在Tenant Creek Goldfield中的高档Au，Cu和Bi矿石已从热热磁铁矿和/或富含含赤铁石体中开采。 较少人众所周知的是由熨锡岩外剪切区内的石英静脉系统托管的Au-Cu-Bi矿化的风格。 我们在奥兰多东AU-CU-BI-BI押金和导航仪6 AU ProSpect中报告了与此矿化风格相关的热热无人机，1659 +/-15 mA和1659 +/- 15 mA的离子探头（虾）U-PB-TH。 ， 分别。 奥兰多东的日期的Monazite在剪切区内的石英 - 亚硫化物血管和Au在剪切区内依次。 在Navigator 6，Monazite在含晚的核核酸石英核心静脉中发生，并且在早期形成的剪切氯霉素中也含有异常Au。

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