International Standard
ISO 7404-1:2025
Coal — Methods for petrographic analysis — Part 1: Vocabulary
Reference number
ISO 7404-1:2025
Edition 4
2025-10
© ISO 2026
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Published (Edition 4, 2025)

ISO 7404-1:2025

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Abstract

This document 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 terms used in the examination of coal of all ranks and types.

This document is not intended to be a comprehensive glossary of coal petrographic terminology, nor does it attempt to provide sufficient information to allow recognition of all the coal components described.

General information

  • Status
     : Published
    Publication date
     : 2025-10
    Stage
    : International Standard published [60.60]
  • Edition
     : 4
    Number of pages
     : 7
  • Technical Committee :
    ISO/TC 27/SC 5
    ICS :
    73.040  01.040.73 
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