ISO 7404-4:2017 Historical

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Methods for the petrographic analysis of coals - Part 4: Method of determining microlithotype, carbominerite and minerite composition

standard by International Organization for Standardization , 08/01/2017

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ISO 7404-4:2017 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 (about 400 nm to 700 nm). Additional blue, blue-violet or UV light excitation (365 nm to 440 nm) for better identification of liptinite in fluorescence may be used especially at low rank coals.

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Document History

  1. ISO 7404-4:2025


    Coal - Methods for petrographic analysis - Part 4: Method of determining microlithotype, carbominerite and minerite composition

    • Most Recent

  2. ISO 7404-4:2017

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    Methods for the petrographic analysis of coals - Part 4: Method of determining microlithotype, carbominerite and minerite composition

    • Historical Version

  3. ISO 7404-4:1988


    Methods for the petrographic analysis of bituminous coal and anthracite -- Part 4: Method of determining microlithotype, carbominerite and minerite composition

    • Historical Version

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Product Details

Published:

08/01/2017

Number of Pages:

16

File Size:

1 file

Same As:

BS ISO 7404-4:2017

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This product is restricted and cannot be purchased in the following countries Ukraine, Russia, Belarus