ISO 7404-4:2025
ISO 7404-4:2025 Coal — Methods for petrographic analysis — Part 4: Method of determining microlithotype, carbominerite and minerite composition
CDN $125.00
This publication was last reviewed and confirmed in 2025.
Coal — Methods for petrographic analysis — Part 4: Method of determining microlithotype, carbominerite and minerite composition
Description
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. Additional blue, blue-violet or UV light excitation for better identification of liptinite in fluorescence can be used especially for low rank coals.
Edition
3
Published Date
2026-06-19
Status
PUBLISHED
Pages
9
Language
English
Format
Secure PDF
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Abstract
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. Additional blue, blue-violet or UV light excitation for better identification of liptinite in fluorescence can be used especially for low rank coals.
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