macrinite

n
an inertinite maceral, generally nonangular, exhibiting no relict plant cell wall structure and larger than 10 µm.

ASTM D121-09a Standard Terminology of Coal and Coke. 2014.

Look at other dictionaries:

  • Inertinite — is oxidized organic material or fossilized charcoal. It is found as tiny flakes within sedimentary rocks. The presence of inertinite is significant in the geological record, as it signifies that wildfires occurred at the time that the host… …   Wikipedia

  • maceral — ▪ organic compound        Petrologic components in coal and their groupings Petrologic components in coal and their groupingsany of the numerous microscopically recognizable, individual organic constituents of coal with characteristic physical… …   Universalium

  • maceral — n an organic substance in coal that is distinguished and classified on the basis of its optical microscopic properties. DISCUSSION Macerals originate from plant tissues, secretions, and exudates that have been altered by geological processes and… …   Coke&Coal Terminology

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