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Overview ISO 7404-1:2025 - Coal - Methods for petrographic analysis - Part 1: Vocabulary is the fourth edition of the ISO vocabulary for coal petrography. This document defines the core terms used in…
Overview ISO 7404-1:2016 specifies the standardized vocabulary used in the petrographic analysis of coals. It defines terms applied to maceral and microlithotype analyses and to the determination of…
1 Scope This part of ISO 7404 defines terms that are used in connection with both maceral and microlithotype analyses, and with the determination of the reflectance of vitrinite. It applies to the te…