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Dehydrogenated plant fragments found in coal or oil shale
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'
Maceral
Coal mineral based on fossilized fungi
Funginite is a maceral, a component, organic in origin, of coal or oil shale, exhibiting several different physical properties and characteristics under
Funginite
Organic component of coal used to assess the thermal maturity of sedimentary rocks
components of coals and most sedimentary kerogens. Vitrinite is a type of maceral, meaning organic components of coal analogous to the "minerals" of rocks
Vitrinite
Combustible sedimentary rock composed primarily of carbon
size. Macerals are coalified plant parts that retain the morphology and some properties of the original plant. In many coals, individual macerals can be
Coal
Coal product used in the process of making steel
different macerals from thermal coal, i.e. different forms of the compressed and fossilized vegetative matter that compose the coal. The different macerals arise
Coke_(fuel)
Genus of dinosaur from the Early Cretaceous
presence of charred spores and other carbonized plant debris in the pollen maceral that indicate the occurrence of ancient wildfires ignited during periods
Utahraptor
Solid organic matter in sedimentary rocks
properties of individual macerals of kerogen with thermal maturation at the nanoscale. These results indicate that all macerals decrease in oxygen content
Kerogen
Finely-ground and macerated remains found in coal deposits
the following group of macerals: sporinite, cutinite, alginite (telalginite and lamalginite), resinite (fossil resins). Macerals (from the verb macerare
Liptinite
Form of natural gas extracted from coal beds
required for profitable exploitation of CBM. Also important is the maceral composition: maceral is a microscopic, homogeneous, petrographic entity of a corresponding
Coalbed_methane
altered) when heated in the absence of oxygen. Inertinite is a common maceral in most types of coal. The main inertinite submacerals are fusinite, semifusinite
Inertinite
Sporinite is a kind of exinite maceral found in coal formed from spores and pollen. It is a Type II kerogen. "Coal Macerals Tutorial". Archived from the
Sporinite
Collective term for higher-quality coal
Valley Greenhouse gas emissions#Carbon dioxide (CO2) List of rock types Maceral Coking factory "Bituminous coal". Energy Dictionary. Archived from the
Bituminous_coal
Natural mineral
Cutinite is a liptinite maceral formed from terrestrial plant cuticles, and often found in coal deposits. It is classified as a Type II kerogen. "Unicorns
Cutinite
By-products of coal combustion
"Coal blend combustion: link between unburnt carbon in fly ashes and maceral composition". Fuel Processing Technology. 80 (3): 209–223. Bibcode:2003FuPrT
Coal_combustion_products
Type of bituminous coal or oil shale
vitrinite and inertinite. Analytically, cannel coal consists of micrinite, and maceral of the exinite group, and certain inorganic materials. Cannel coal has
Cannel_coal
British birth control campaigner and palaeobotanist (1880–1958)
earliest angiosperms, the formation of coal balls and the nature of coal macerals. The classification scheme and terminology she devised for coal are still
Marie_Stopes
consists of more than 50% liptinite, 20 – 50% huminite and 0 – 20% inertinite maceral groups and is characterized by its high organic content . The origin of
Himmetoglu_oil_shale_deposit
which matches the direction of thrusting. vesiculated vitrinite A group of macerals that are the most common component of coal. vitrophyre See pitchstone.
Glossary_of_geology
Negative emissions technology
material. Biochar is produced by rapidly carbonizing organic matter into maceral. There is evidence that biochar, produced at pyrolysis temperature over
Biochar_carbon_removal
Branch of geology
include remains of vascular land plants. Three major type of organic matter (macerals) in oil shale are telalginite, lamalginite, and bituminite. Some oil shale
Oil_shale_geology
Finely-ground and macerated organic remains found in bituminous coal
Bituminite is an autochthonous maceral that is a part of the liptinite group in lignite, that occurs in petroleum source rocks originating from organic
Bituminite
British geologist (born 1952)
rskey=tBNiRt&result=313 Scott A.C. (2002). "Coal petrology and the origin of coal macerals: a way ahead?". International Journal of Coal Geology. 50 (1–4): 119–134
Andrew_Cunningham_Scott
Oil shale resources that are economically recoverable
include remains of vascular land plants. Three major type of organic matter (macerals) in oil shale are telalginite, lamalginite, and bituminite. Some oil-shale
Oil_shale_reserves
American company
Scanning Electron Microscopy (CCSEM) Techniques for Determining Mineral-Maceral Association". Retrieved June 12, 2012. "Project ExCEL: Web-based Scanning
RJ_Lee_Group
Measurement of properties of coal
coal: Surface moisture: water held on the surface of coal particles or macerals Hygroscopic moisture: water held by capillary action within the microfractures
Coal_analysis
Australian geochemist and poet
emuseum.com. 2025. Retrieved 5 May 2026. Fluorescence Alteration of Multiple Macerals. Raman Maturity Method. Wilkins, R. (2025). "A sort of symmetry". Séjours
Ronald_W._T._Wilkins
Early Jurassic geological formation of south-western Germany
resins are especially strong for the benzene-methanol fraction. The main maceral found is lamalginite, which may derive from thin-walled planktonic and
Posidonia_Shale
Geological feature in Queensland, Australia
are irregular and varied, reflecting a complicated geologic history. The maceral (components) of this coal are mostly vitrinite (predominantly as collotelinite)
Denison_Trough
Extinct genus of fungi
"Classification of uppermost Ordovician to lower Devonian tubular and filamentous macerals from the Anglo-Welsh Basin". Botanical Journal of the Linnean Society.
Tortotubus
Geological formation in Great Britain
James B.; Vane, Christopher H. (March 2020). "Cellular preservation and maceral development in lignite and wood from the Brassington Formation (Miocene)
Brassington_Formation
sample from the mounting medium, and subsequent measurement of coal and macerals. QEMSCAN consists of proprietary software package iDiscover which consists
QEMSCAN
Method for extracting methane from a coal deposit
resource to be exploited. Methane adsorbed into a solid coal matrix (coal macerals) will be released if the coal seam is depressurized. Methane may be extracted
Coalbed_methane_extraction
Form genus of cuticle-like fossils
"Classification of uppermost Ordovician to Lower Devonian tubular and filamentous macerals from the Anglo-Welsh Basin". Botanical Journal of the Linnean Society.
Nematothallus
Geologic formation in Częstochowa, Poland
Sitosterol and Cholesterol. These coals are generally dominated by Vitrain macerals, with exceptions where there is a great percentage of Inertinite. This
Blanowice_Formation
German mineralogist (1913–1986)
Mackowsky's work remains relevant with her research on the classification of macerals and microlithotypes which laid the foundations of the International Manual
Marie-Therese_Mackowsky
Extinct genus of fungi
"Classification of uppermost Ordovician to lower Devonian tubular and filamentous macerals from the Anglo-Welsh Basin". Botanical Journal of the Linnean Society.
Ornatifilum
MACERAL
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Boy/Male
Australian, French, German, Portuguese
Famous Warrior
Boy/Male
Hindu
Female
Egyptian
, mother of Aahmes and Bak.
Girl/Female
French Anglo Saxon German
Wealthy.
Girl/Female
Hindu, Indian
Victory
Girl/Female
Australian, Celtic, Gaelic, Latin
Gaelic Form of Grizel
Boy/Male
Tamil
King, Arjun
Boy/Male
Norse
Old wolf.
Biblical
hearing; obeying
Girl/Female
French, German, Greek
Dolphin
MACERAL
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