GSO ISO 7404-4:2013
ISO 7404-4:1988
Gulf Standard
Current Edition
·
Approved on
01 April 2013
Methods for the petrographic analysis of bituminous coal and anthracite - Part 4: Method of determining microlithotype, carbominerite and minerite composition
GSO ISO 7404-4:2013 Files
English
6 Pages
Current Edition
Reference Language
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GSO ISO 7404-4:2013 Scope
Abstract
This part of ISO 7404 applies only to determinations made on polished particular blocks using reflected white ligth. The examination is carried out by using reflected ligth microscope and point count procedure. The microlithotypes are identified from their maceral composition under an immersion medium. The proportions of the macerals are determined using a graticule having a grid with 20 points of intersection.
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