STANDARD
ISO 7404-1:2025
Issue date: 2025 10 27
Coal — Methods for petrographic analysis — Part 1: Vocabulary
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 on ISO 7404-1:2025
Timeline
An overview of the development of ISO 7404-1:2025 from 1984 til today.
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ISO 7404-1:2025Coal — Methods for petrographic analysis — Part 1: Vocabulary
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ISO 7404-1:2016Methods for the petrographic analysis of coals — Part 1: Vocabulary
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ISO 7404-1:1994Methods for the petrographic analysis of bituminous coal and anthracite — Part 1: Vocabulary
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ISO 7404-1:1984Methods for the petrographic analysis of bituminous coal and anthracite — Part 1: Glossary of terms
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