ISO 7404-4:2025
Current
Current
The latest, up-to-date edition.
Coal — Methods for petrographic analysis — Part 4: Method of determining microlithotype, carbominerite and minerite composition
Available format(s)
Hardcopy , PDF
Language(s)
English
Published date
27-10-2025
€65.00
Excluding VAT
This document specifies a method, using a graticule with 20crossline intersections, for determining the proportions of microlithotypes, carbominerite and minerite in coals. It applies only to determinations made on polished particulate blocks using reflected white light. Additional blue, blue-violet or UV light excitation for better identification of liptinite in fluorescence can be used especially for low rank coals.
| DocumentType |
Standard
|
| Pages |
9
|
| PublisherName |
International Organization for Standardization
|
| Status |
Current
|
| Supersedes |
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