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MICROLITHOTYPE [23 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2017-05-19

English

Subject field(s)
  • Petrography
DEF

A petrographic entity, recognizable visually as a band or layer of coal that has distinctive physical appearance and characteristic microstructural features from coal to coal.

CONT

Thiessen recognized three components of banded bituminous coals - anthraxylon, attritus, and fusain.

OBS

The term component is somewhat comparable with the term microlithotype of the Stopes-Heerlem Nomenclature.

French

Domaine(s)
  • Pétrographie
DEF

Unité pétrographique reconnaissable à l'œil nu, sous forme de strates ou de lits de charbon. Son aspect extérieur est spécifique et sa microstructure distinctive.

Spanish

Save record 1

Record 2 2012-03-09

English

Subject field(s)
  • Petrography
  • Origins and Composition of Coal
DEF

... a microlithotype containing 5-20% by volume of iron disulphide(pyrite, marcasite and melnikovite)...

CONT

Pyrite with no apparent maceral association is classed as carbominerite. Convention would classify virtually all pyrite-bearing assemblages as the carbopyrite microlithotype.

French

Domaine(s)
  • Pétrographie
  • Origine et constitution des charbons
DEF

Mélange intime de microlithotypes et de sulfures de fer dont le volume oscille entre 5 et 20 %.

Spanish

Save record 2

Record 3 2012-03-02

English

Subject field(s)
  • Petrography
DEF

... a trimaceral microlithotype in which liptinite(exinite) contributes to a greater extent than vitrinite and inertinite.

French

Domaine(s)
  • Pétrographie
DEF

Microlithotype trimacéral contenant plus de liptinite (exinite) que de vitrinite et d'inertinite.

Spanish

Save record 3

Record 4 2012-03-02

English

Subject field(s)
  • Classification of Coal
  • Mining of Organic Materials
  • Solid Fossil Fuels
DEF

Any coal microlithotype containing 20-60% by volume of clay minerals, mica, and, in lesser proportions, quartz.

French

Domaine(s)
  • Classification des charbons
  • Exploitation de matières organiques (Mines)
  • Combustibles fossiles solides
DEF

Microlithotype de minéraux argileux, de micacés (quartz accessoire) et de noirs en L-R dont la granulométrie varie entre 1 et 3 microns.

Spanish

Save record 4

Record 5 2012-03-02

English

Subject field(s)
  • Petrography
  • Classification of Coal
DEF

... a microlithotype consisting mainly of the exinite group of macerals and especially of coal.

French

Domaine(s)
  • Pétrographie
  • Classification des charbons
DEF

Microlithotype constitué principalement de macéraux du groupe de l'exinite, surtout de la sporinite.

OBS

[Ce] charbon [est] formé principalement de spores.

Spanish

Save record 5

Record 6 2012-03-02

English

Subject field(s)
  • Solid Fossil Fuels
DEF

... a monomaceral microlithotype consisting only of alginite.

French

Domaine(s)
  • Combustibles fossiles solides
DEF

Microlithotype macromacéral composé entièrement d'alginite.

Spanish

Save record 6

Record 7 2012-03-02

English

Subject field(s)
  • Petrography
DEF

... the microlithotype consisting principally of vitrinite and exinite.

French

Domaine(s)
  • Pétrographie
DEF

Microlithotype composé surtout de vitrinite et d'exinite.

Spanish

Save record 7

Record 8 2012-03-02

English

Subject field(s)
  • Petrography
DEF

... microlithotype with maceral composition between those of clarite and durite closer to clarite than durite. Further specification is that the proportion of vitrinite must exceed that of inertite.

French

Domaine(s)
  • Pétrographie
DEF

Microlithotype contenant respectivement plus de 5 % de vitrinite, d'exinite et d'inertinite; la quantité de vitrinite est plus élevée que celle de l'inertinite.

OBS

Les bandes de plus 50 microns d'épaisseur sont classées dans cette catégorie.

Spanish

Save record 8

Record 9 2012-03-02

English

Subject field(s)
  • Petrography
  • Classification of Coal
DEF

... microlithotype consisting principally of collinite and telinite.

CONT

Vitrite comprises 95% of the vitrinite macerals, telenite and collinite in bands at least 50 μm thick ... Vitrite occurs in coal seams as elongated lenses several millimetres thick. Vitrite originated in anaerobic conditions due to high groundwater table levels in the peat mire.

French

Domaine(s)
  • Pétrographie
  • Classification des charbons
DEF

Microlithotype constitué surtout de collinite et de télinite.

Spanish

Save record 9

Record 10 2012-03-02

English

Subject field(s)
  • Petrography
DEF

... a general microlithotype group to which all three maceral groups contribute.

French

Domaine(s)
  • Pétrographie
DEF

Microlithotype constitué de trois groupes de macéraux.

Spanish

Save record 10

Record 11 2012-03-02

English

Subject field(s)
  • Petrography
DEF

A coal microlithotype that contains a combination of vitrinite and inertinite totalling at least 95%, and containing more of each than of exinite.

French

Domaine(s)
  • Pétrographie
DEF

Microlithotype composé principalement de vitrinite et d'inertinite.

Spanish

Save record 11

Record 12 2012-03-02

English

Subject field(s)
  • Petrography
DEF

... microlithotype consisting principally of the macerals fusinite, semifusinite and sclerotinite.

French

Domaine(s)
  • Pétrographie
DEF

Microlithotype constitué de fusinite, de semifusinite et de sclérotinite.

Spanish

Save record 12

Record 13 2012-03-02

English

Subject field(s)
  • Petrography
DEF

... a microlithotype which consists of inertodetrinite.

French

Domaine(s)
  • Pétrographie
DEF

Microlithotype d'inertodétrinite.

Spanish

Save record 13

Record 14 2012-03-02

English

Subject field(s)
  • Petrography
DEF

... the microlithotype with maceral composition between that of clarite and durite but closer to durite than to clarite.

OBS

It occurs in fairly thick bands, is widely distributed and, like duroclarite, is a common constituent of most humic coal.

French

Domaine(s)
  • Pétrographie
DEF

Microlithotype renfermant respectivement plus de 5 % de vitrinite, d'exinite et d'inertinite.

OBS

Le pourcentage d'inertinite doit être supérieur à celui de la vitrinite.

OBS

Sont classées comme clarodurite, les bandes dont l'épaisseur excède 50 microns.

Spanish

Save record 14

Record 15 2012-03-02

English

Subject field(s)
  • Petrography
  • Classification of Coal
DEF

... a very common microlithotype in Japanese Tertiary coal.

OBS

It consists of macerals vitrinite, degradinite and exinite.

French

Domaine(s)
  • Pétrographie
  • Classification des charbons
DEF

Microlithotype très répandu dans les charbons tertiaires du Japon, composé d'au moins 95 % de vitrinite, de dégradinite et d'exinite.

Spanish

Save record 15

Record 16 2012-03-02

English

Subject field(s)
  • Petrography
DEF

... a monomaceral microlithotype consisting of macrinite.

French

Domaine(s)
  • Pétrographie
DEF

Microlithotype monomacéral composé de macrinite.

Spanish

Save record 16

Record 17 2012-03-02

English

Subject field(s)
  • Solid Fossil Fuels
  • Petrography
DEF

... a microlithotype containing 20-60% by volume of carbonate minerals(calcite, siderite, dolomite and ankerite)...

French

Domaine(s)
  • Combustibles fossiles solides
  • Pétrographie
DEF

Microlithotype dont 20 à 60 % du volume est constitué de carbonates (calcite, sidérite, dolomite et ankérite).

Spanish

Save record 17

Record 18 2012-03-01

English

Subject field(s)
  • Petrography
  • Origins and Composition of Coal
DEF

A coal microlithotype that contains a combination of inertinite and exinite.

OBS

The term microlithotype was developed to permit the designation of rock types within coal that are at a microscopic scale and their definition is based on maceral percentages. All macerals have a suffix "-inite" and microlithotypes have the suffix "-ite. "Thus, layers greater than 0. 05 mm in thickness and consisting of greater than 95% vitrinite are termed vitrite. Bimaceral(clarite, durite and vitrinertite) and trimaceral(duroclarite and clarodurite) microlithotypes have names that are derived from lithotypes rather than macerals.

French

Domaine(s)
  • Pétrographie
  • Origine et constitution des charbons
DEF

Microlithotype constitué d'inertinite (micrinite, fusinite, semifusinite, sclérotinite) et d'exinite (surtout sporinite).

Spanish

Save record 18

Record 19 2007-06-11

English

Subject field(s)
  • Classification of Coal
DEF

A coal microlithotype that consists of a mixture of two macerals.

CONT

At the microscopic level, the associations of coal macerals are named microlithotypes. They have been classified into three main groups : monomaceral, bimaceral and trimaceral according to whether a microlithotype contains one, two or three maceral groups.

OBS

A maceral is a component of coal. 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.

French

Domaine(s)
  • Classification des charbons
CONT

Classification des principaux microlithotypes : Monomacéral [...] Bimacéral [...] Trimacéral [...]

Spanish

Save record 19

Record 20 2007-06-11

English

Subject field(s)
  • Classification of Coal
CONT

At the microscopic level, the associations of coal macerals are named microlithotypes. They have been classified into three main groups : monomaceral, bimaceral and trimaceral according to whether a microlithotype contains one, two or three maceral groups.

OBS

A maceral is a component of coal. 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.

French

Domaine(s)
  • Classification des charbons
CONT

Classification des principaux microlithotypes : Monomacéral [...] Bimacéral [...] Trimacéral [...]

Spanish

Save record 20

Record 21 2007-06-11

English

Subject field(s)
  • Classification of Coal
DEF

A coal microlithotype consisting of a single maceral.

CONT

At the microscopic level, the associations of coal macerals are named microlithotypes. They have been classified into three main groups : monomaceral, bimaceral and trimaceral according to whether a microlithotype contains one, two or three maceral groups. The monomaceral microlithotypes "vitrite", "liptite" or "fusite" must contain not less than 95% vitrinite, liptinite or inertinite and not more than 5% other maceral groups, respectively.

OBS

A maceral is a component of coal. 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.

French

Domaine(s)
  • Classification des charbons
CONT

Classification des principaux microlithotypes : Monomacéral [...] Bimacéral [...] Trimacéral [...]

Spanish

Save record 21

Record 22 1998-11-23

English

Subject field(s)
  • Petrography
DEF

... a microlithotype composed principally of inertinite in which micrinite is the most abundant form.

French

Domaine(s)
  • Pétrographie
DEF

Microlithotype composé presque exclusivement d'inertinite à forte teneur en micrinite.

Spanish

Save record 22

Record 23 1998-09-24

English

Subject field(s)
  • Petrography
DEF

... a monomaceral microlithotype consisting of the maceral semifusinite.

French

Domaine(s)
  • Pétrographie
DEF

Microlithotype monomacéral composé du macéral semifusinite.

Spanish

Save record 23

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