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单矿物分析既要求测定主元素,也要求测定痕量元素。矿物中一些痕量元素的分布及其含量变化可以为矿床成因、成矿预测和普查探勘的研究提供有关的科学信息。对单矿物中痕量元素的测定既要求少取样,又要求有高准确度,在这一方面,等离子体直读光谱法相对优于其他分析方法。本文选定黄铁矿及几个主要硫化物单矿物作为研究课题,根据等离子体直读光谱分析原理及其突出优点拟定相对合理的分析步骤以满足工作需要。试验结果表明,本方法可适用于快速分析以铁、铜、铅、锌为基体的多种硫化矿物,以至类似的非硫化矿物。可以预料,等离子体直读光谱技术有可能在单矿物分析领域中发挥更大作用。
Single-mineral analysis requires both the determination of the main element and the determination of trace elements. The distribution of some trace elements in minerals and the change of their contents can provide relevant scientific information for the study of genesis, mineralization prediction and prospecting exploration. The determination of trace elements in single minerals requires both less sampling and high accuracy, and in this respect plasma direct reading spectroscopy is superior to other analytical methods. In this paper, pyrite and several major sulfide single minerals were selected as research topics. According to the principle of plasma direct reading spectroscopy and its outstanding advantages, a relatively reasonable analytical procedure was developed to meet the needs of work. The experimental results show that the method can be applied to the rapid analysis of various sulfide minerals based on iron, copper, lead and zinc, and similar non-sulfide minerals. It is expected that plasma direct reading spectroscopy may have a greater role in the field of single mineral analysis.