标准编号：ISO 7404-4:2017
中文名称：烟煤及无烟煤的岩相分析方法 第4部分：测定煤岩显微类型、碳矿石及矿石组成的方法
英文名称：Methods for the petrographic analysis of coals — Part 4: Method of determining microlithotype, carbominerite and minerite composition
发布日期：2017-08
标准范围
This document specifies a method, using a graticule with 20 crossline intersections, for determining the proportions of microlithotypes, carbominerite and minerite in coals. It applies only to determinations made on polished particulate blocks using reflected white light (about 400 nm to 700 nm). Additional blue, blue-violet or UV light excitation (365 nm to 440 nm) for better identification of liptinite in fluorescence may be used especially at low rank coals.
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