Concept
Alternate Profiles
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- Preferred Labelskos:prefLabel
lignite
- URI
- http://resource.geosciml.org/classifier/cgi/lithology/lignite ↗Go to the persistent identifier link
- Within Vocab
- Simple Lithology
| Preferred Labelskos:prefLabel | lignite |
|---|---|
| Definitionskos:definition | Coal that has a gross calorific value less than 24 MJ/kg (determined in conformance with ISO 1928), and vitrinite mean random reflectance less than 0.6% (determined in conformance with ISO 7404-5). Gross calorific value is recalculated to a moist, ash free basis using bed moisture (determined according to ISO 1015 or ISO 5068). Includes all low-rank coals, including sub-bitiminous coal. A consolidated, dull, soft brown to black coal having many readily discernible plant fragments set in a finer grained organic matrix. Tends to crack and fall apart on drying. Operationally sub-bituminous and bitiminous coal are qualitatively distinguished based on brown streak for sub-bitiminous coal and black streak for bituminous coal. |
| Exact MatchexactMatch |
http://inspire.ec.europa.eu/codelist/LithologyValue/lignite
|
| Broaderbroader |
coal
|
| See AlsoseeAlso | Simple Lithology |
| Alternative LabelaltLabel | low rank coal |
| Exampleexample | sub bituminous coal |
| Is Defined ByisDefinedBy | Simple Lithology |