maceral

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Related to Macerals: coal petrology

maceral

[¦mas·ə¦ral]
(geology)
The microscopic organic constituents found in coal.
References in periodicals archive ?
Maceral and geochemical characteristics of coal seam and oil shale in Huangxian Basin.
The behaviour of inertinite macerals under pulverised fuel (pf) combustion conditions.
The oil shale samples were studied through using quantitative identification of maceral under microscope, rock pyrolysis, TOC, Gray-King low-temperature dry distillation test.
The sapropelinite group has a maximum generation potential compared to other organic macerals [7], with the volume content of 59.
The Tertiary coals are humic and generally dominated by vitrinite, with significant amounts of liptinite and low amounts of inertinite macerals.
These source beds, of the Lightjack Formation of the Liveringa Group, are thought to contain Type 2 or oil prone macerals, as confirmed by geochemical analyses of samples from oil wells, and could also have sourced conventional hydrocarbon accumulations.
Lower Palaeozoic black shales contain vitrinite-like macerals from where "vitrinite" reflectance can be measured.