prBAS ISO 7404-4:2026
Coal — Methods for petrographic analysis — Part 4: Method of determining microlithotype, carbominerite and minerite composition
General information
Status:Project
Number of pages:13
Adoption method:Korice
Language:engleski
Edition:3.
Realization date:17.11.2025
Forseen date for next stage code:27.11.2025
Technical committee:BAS/TC 27, Mining
ICS:
73.040, Coals
Abstract
This document specifies a method, using a graticule with 20 crossline 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.
Lifecycle
...
Original document and degree of correspondence
ISO 7404-4:2025, identical
Relation to BAS standards
Work material
Only members of the technical committee have access to work material. If you are a members of this technical committee you need to login to view the documents. Login