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ISO 7404-3:2009Withdrawn

Methods for the petrographic analysis of coals — Part 3: Method of determining maceral group composition

Méthodes d'analyse pétrographique des charbons — Partie 3: Détermination de la composition en groupes de macéraux

This edition has been replaced by ISO 7404-3:2025.

Abstract / scope

ISO 7404-3:2009 specifies a method for determining the proportions of the maceral groups (and the minerals, if desired) in coals. ISO 7404-3:2009 is applicable only to determinations made on polished particulate blocks using incident white light. For lower-rank coals, the additional use of the fluorescence mode is necessary to identify liptinites.

Life cycle

Replaces

ISO 7404-3:1994WithdrawnMethods for the petrographic analysis of bituminous coal and anthracite — Part 3: Method of determining maceral group compositionInternational Standard · Published 29 Sep 1994 · ISO/TC 27/SC 5

Replaced by

ISO/WD 7404-3Deleted (project abandoned)Methods for the petrographic analysis of coals — Part 3: Method of determining maceral group compositionInternational Standard · ISO/TC 27/SC 5ISO 7404-3:2025PublishedCoal — Methods for petrographic analysis — Part 3: Method of determining maceral group compositionInternational Standard · Published 27 Oct 2025 · ISO/TC 27/SC 5