BGS Rock Classification Scheme
Fusain - A type of bituminous-coal, classified according to lithotype. It is a black, soft, friable coal which closely resembles charcoal. It easily disintegrates into a black, fibrous powder. A hard form of fusain that has been impregnated with mineral matter can be found in some coals. British Geological Survey Research Report RR/99/03, section 6.1 and fig. 10.
| Code | FUSAIN |
|---|---|
| Description | Fusain - A type of bituminous-coal, classified according to lithotype. It is a black, soft, friable coal which closely resembles charcoal. It easily disintegrates into a black, fibrous powder. A hard form of fusain that has been impregnated with mineral matter can be found in some coals. British Geological Survey Research Report RR/99/03, section 6.1 and fig. 10. |
| Qualifiers | No qualifiers currently exist. |
| Definition | Bituminous coal lithotype. Soft, black, friable, resembles charcoal. Breaks into fibrous powder. Hard if impregnated with another mineral. |
| Linked data | http://data.bgs.ac.uk/id/EarthMaterialClass/RockName/FUSAIN |
CAVEAT
"Thumbnail" definitions attached to some of the table entries are an interim attempt to provide simple short descriptions of the "unqualified" rock types presented within the BGS Rock Classification Scheme. Every effort has been made to ensure accuracy and consistency but minor contradictions or omissions might be present. The BGS welcomes any feedback pointing out such minor imperfections and/or providing constructive comment and suggestions for improvement of the definitions. In the first instance such feedback should be directed to Dr Tim McCormick.