BGS Rock Classification Scheme
Monomineralic aluminium-silicate - These sediments and rocks take the form of clays and claystones. British Geological Survey Research Report RR/99/03, section 9.1 and table 19.
| Code | MALS |
|---|---|
| Description | Monomineralic aluminium-silicate - These sediments and rocks take the form of clays and claystones. British Geological Survey Research Report RR/99/03, section 9.1 and table 19. |
| Qualifiers | No qualifiers currently exist. |
| Definition | Sediments & sedimentary rocks, with Al-silicates such as kaolinite, illite, or smectite. Clays & claystones particle size <0.004mm. China clay is synonymous with kaolinite-claystone & fuller's earth & bentonite with smectite-claystone. |
| Linked data | http://data.bgs.ac.uk/id/EarthMaterialClass/RockName/MALS |
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.