ISO 7404-3:2025
Current
Coal — Methods for petrographic analysis — Part 3: Method of determining maceral group composition
Hardcopy , PDF
English
10-27-2025
This document specifies a method for determining the proportions of the maceral groups (and the minerals, if desired) in coals. It is concerned only with 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.
| DocumentType |
Standard
|
| Pages |
8
|
| PublisherName |
International Organization for Standardization
|
| Status |
Current
|
| Supersedes |
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