Abstract
Cancels and replaces the first edition (1984). Specifies a method of determining the proportions of the maceral groups (and the minerals if desired) in coals. Concerned only with determinations made on polished particulate blocks using reflected white light. Not concerned with the determination of the proportions of naturally occurring maceral associations.
General information
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Status: WithdrawnPublication date: 1994-09Stage: Withdrawal of International Standard [95.99]
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Edition: 2Number of pages: 6
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Technical Committee :ISO/TC 27/SC 5ICS :73.040
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Life cycle
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Previously
WithdrawnISO 7404-3:1984
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Now
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Revised by
PublishedISO 7404-3:2009