ISO/CD 7404-3

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

General information

Current stage: 30.60 Effective date: 30 qer 2024

Originator: ISO

Owner: ISO/TC 27/SC 5

Type: International Standard

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

PREVIOUSLY

Revises
ISO 7404-3:2009

NOW

IN_DEVELOPMENT
ISO/CD 7404-3
30.60 Close of voting/ comment period
30 qer 2024

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