Maceral - Wikipedia
网页A maceral is a component, organic in origin, of coal or oil shale. The term 'maceral' in reference to coal is analogous to the use of the term 'mineral' in reference to igneous or metamorphic rocks. Examples of macerals are inertinite, vitrinite, and liptinite. [1]
Maceral | Definition & Facts | Britannica
网页Maceral, any of the numerous microscopically recognizable, individual organic constituents of coal with characteristic physical and chemical properties. Macerals are analogous to minerals in inorganic rocks, but they lack a definite crystalline structure.
Macerals, Coal, Kentucky Geological Survey, University of Kentucky
网页2023年1月5日 · On the microscopic level, coal is made up of organic particles called macerals. Macerals are the altered remains and byproducts of the original plant material from which the coal-forming peat originated. Macerals are to coal as sediment grains and cements are to sedimentary rocks.
Coal MaceralsTutorial | Petrographic Atlas | SIU
网页There are three basic groups of macerals, the vitrinite group derived from coalified woody tissue, the liptinite group derived from the resinous and waxy parts of plants and the inertinite group derived from charred and biochemically altered plant cell wall material.
What are macerals? - IFRF
网页2002年4月22日 · Macerals. The organic units or macerals that make up a coal mass can be identified in all ranks of coal. In essence, macerals are divided into three main groups: [GLOSS]Vitrinite [/GLOSS] (also known as [GLOSS]Huminite [/GLOSS]), which consists of woody material;
Vitrinite - Wikipedia
网页Vitrinite is a type of maceral, where "macerals" are organic components of coal analogous to the "minerals" of rocks. Vitrinite has a shiny appearance resembling glass (vitreous). It is derived from the cell-wall material or woody tissue of the plants from which coal was formed.
Coal Macerals | Indiana Geological & Water Survey
网页Macerals are microscopically recognizable constituents of organic matter in coal. The term maceral was first used by Stopes in 1935 for a component of coal detected under a microscope. Over the years, the ICCP has established standard rules for maceral analysis, maceral definitions and classifications.
Coal Macerals - an overview | ScienceDirect Topics
网页The maceral (organic matter) composition in coal plays an important role in the transformation of the coal structure during gasification as each group reacts differently. Coal macerals are grouped as vitrinite, liptinite, and inertinite, where each group has specific physical and chemical properties ( Matsuoka et al., 2006; Oboirien, 2011 ).
Maceral Component - an overview | ScienceDirect Topics
网页Macerals are microscopical organic entities derived from terrestrial, lacustrine and marine plant remains and modified by deposition processes, early diagenesis and subsequent thermal evolution. There are three maceral groups: huminite/vitrinite, liptinite and …
Coal Macerals - SpringerLink
网页2016年1月1日 · Coal is a heterogeneous natural substance consisting of a number of constituents. Microscopically basic coal constituent is maceral which is synonymous to minerals in inorganic rocks. However, there is a difference between mineral and maceral.
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