...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Contributions to Mineralogy and Petrology >Intermediate sodium-potassium mica in hydrothermally altered rocks of the Waterloo deposit, Australia: a combined SEM-EMP-XRD-TEM study
【24h】

Intermediate sodium-potassium mica in hydrothermally altered rocks of the Waterloo deposit, Australia: a combined SEM-EMP-XRD-TEM study

机译：澳大利亚滑铁卢矿床热液蚀变岩石中的中间钠钾云母：SEM-EMP-XRD-TEM组合研究

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

Metastable intermediate Na-K mica represents a product of hydrothermal alteration in volcanic rocks from the alteration halo of the Waterloo massive sulfide deposit, Australia. The XRD pattern of this solid solution between paragonite and muscovite is characterized by a rational series of basal reflections with d values intermediate between the end members. Transmission electron microscopy revealed that the intermediate Na-K mica forms thick stacks that belong to a two-layer polytype. Na-rich intermediate Na-K mica typically occurs together with paragonite whereas K-rich intermediate Na-K mica is intergrown with muscovite. The intermediate Na-K mica is interpreted to have formed as a result of the incomplete transformation of K-rich mica to Na-rich mica through dissolution and recrystallization processes driven by compositional changes of the hydrothermal fluids interacting with the volcanic rocks. Alteration must have proceeded under non-equilibrium conditions because the composition of the solid solution falls into the miscibility gap separating paragonite and muscovite.
机译：亚稳态的中间Na-K云母代表了来自澳大利亚滑铁卢块状硫化物矿床蚀变晕的火山岩热液蚀变产物。在方解石和白云母之间的固溶体的XRD图谱的特征是基波反射的一系列有理数，d值介于端部之间。透射电子显微镜显示，中间的Na-K云母形成了厚的堆叠，属于两层多型。富含Na的中间Na-K云母通常与方石一起出现，而富含K的中间Na-K云母与白云母共生。中间的Na-K云母被解释为由于富K云母通过与火山岩相互作用的热液流体成分变化而驱动的溶解和重结晶过程，不完全转变为Na高云母而形成的。由于固溶体的成分落入将石agon石和白云母分开的可混溶间隙中，因此必须在非平衡条件下进行更改。

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