...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Economic geology and the bulletin of the Society of Economic Geologists >SULFOSALT MELTS: EVIDENCE OF HIGH-TEMPERATURE VAPOR TRANSPORT OF METALS IN THE FORMATION OF HIGH-SULFIDATION LODE GOLD DEPOSITS
【24h】

SULFOSALT MELTS: EVIDENCE OF HIGH-TEMPERATURE VAPOR TRANSPORT OF METALS IN THE FORMATION OF HIGH-SULFIDATION LODE GOLD DEPOSITS

机译：硫磺熔体：高硫矿床金矿床中金属的高温蒸气运移的证据

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In enargite-gold (high-sulfidation) vein deposits, magmatic fluid is considered responsible for the transport of metals and sulfur into the depositional regime. New data from Field-Emission SEM analyses of sulfosalt mineral assemblages (primarily enargite and tennantite) from El Indio, Chile, and Summitville, Colorado, pro-vide direct evidence of high-temperature deposition, including the following: (1) the preservation of delicate euhedral quartz assemblages in sulfosalts, (2) a range of discrete Sb-rich sulfosalt, quartz, feldspar, and floura-patite vug-filling minerals, and (3) symplectic sulfosalt-chalcopyrite textures that are arguably quenched melts. Together, these features indicate formation from the vapor phase at high temperatures. Furthermore, euhedral quartz crystals from El Indio contain high-temperature, vapor-rich fluid inclusions. Combined, these observa-tions are interpreted as suggestive of deposition in response to vapor-phase decompression within fracture arrays that may be considered the analogues of the feeder fractures beneath large low-grade silver-gold deposits such as Yanacocha, Peru.
机译：在en金（高硫化）金矿床中，岩浆流体被认为负责将金属和硫输送到沉积区。来自智利El Indio和科罗拉多州Summitville的亚硫酸盐矿物组合物（主要为钠辉石和球铁矿）的场发射SEM分析的新数据提供了高温沉积的直接证据，其中包括：（1）保存含硫盐的精细的共晶石英组件;（2）一系列离散的富含Sb的硫盐，石英，长石和粉状磷灰石充填孔雀石矿物;以及（3）可以认为是淬火熔体的辛硫磺盐-黄铜矿结构。这些特征一起表明在高温下由气相形成。此外，来自El Indio的共面石英晶体包含高温，富蒸气的流体包裹体。结合起来，这些观察结果被解释为响应于裂缝阵列内的气相减压而沉积，这可能被认为是大型低品位银金矿床（如秘鲁的Yanacocha）下的支线裂缝的类似物。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号