Acta Scientiarum Naturalium Universitatis Pekinensis

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Application of Cathodoluminescence to Mineralization and Lithogenesis Studying

LAI Yong   

  1. Department of Geology, Peking University, Beijing, 100871
  • Received:1995-03-01 Online:1995-09-20 Published:1995-09-20



  1. 北京大学地质学系,北京,100871

Abstract: The cathodoluminescence is a crystal luminescence caused by that the streams of electrons from cathode are directed onto the crystal surface.Usually, the trace elements in crystal are the activator that influnce the formation of luminescence center. The composition ofore-bearing fluid has been changing during the growthing of crystal. So the same minerals which have different generations or the growth zones of a mineral crystal have different luminescence under the cathodoluminescence microscope. It is helpful to distinguish the different generation minerals and a crystal microstrctural marakers in which the fluid inclusions can be finded. The sample which come from Guangtoushanaklali granite ,Wendeng gold deposit and Shuikoushan silicalite are studied under the cathodoluminescence microscope. In this background, detail P-T-V-X properties of fluid are determined from the further studying the fluid inclusions.

Key words: cathodoluminescence, fluid inclusions, minerlization and lithogenesis

摘要: 阴极发光技术是通过电子束轰击矿物晶体至使其发光。矿物晶体中的一些微量元素通常成为影响发光中心形成的激活剂。不同世代同种矿物或者是单一矿物晶体内部由于其形成时成矿流体成分的微小差异,因而在阴极发光显微镜下表现出不同的发光性。通过发光后的图像分析,可以区分不同世代的矿物以及不规则生长的晶体内部微形态。对河北光头山碱性花岗岩体、山东文登金矿、湖南水口山硅质岩的阴极发光处理后的样品进行包裹体的系统研究,获得比传统方法更小时间单位成岩成矿流体的演化特征,为模拟和恢复地质作用过程提供比较精确的物化参数。

关键词: 阴极发光, 流体包裹体, 成岩成矿条件

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