Reference number
ISO 7404-4:1988
© ISO 2025
ISO 7404-4:1988
Methods for the petrographic analysis of bituminous coal and anthracite — Part 4: Method of determining microlithotype, carbominerite and minerite composition
Edition 1
1988-12
Withdrawn
Withdrawn (Edition 1, 1988)

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.

General information

  • Status
     : Withdrawn
    Publication date
     : 1988-12
    Stage
    : Withdrawal of International Standard [95.99]
  • Edition
     : 1
    Number of pages
     : 6
  • Technical Committee :
    ISO/TC 27/SC 5
    ICS :
    73.040 
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