BGS Rock Classification Scheme
Marble - A type of metamorphic rock with unknown protolith based on modal composition. In the Rock Classification Scheme, it is one composed largely of calcsilicate and/or carbonate minerals, but where the relative proportions of either mineral group are unknown. British Geological Survey Research Report RR/99/02, section 6.2.
| Code | MARBLE |
|---|---|
| Description | Marble - A type of metamorphic rock with unknown protolith based on modal composition. In the Rock Classification Scheme, it is one composed largely of calcsilicate and/or carbonate minerals, but where the relative proportions of either mineral group are unknown. British Geological Survey Research Report RR/99/02, section 6.2. |
| Qualifiers | No qualifiers currently exist. |
| Definition | Crystalline metacarbonate-rock (grain size & protolith undefined); >50% calc-silic/carbonate minerals +/-calcite/dolomite/diopside/epidote/grossular/Ca-amphibole/titanite/uvarovite/wollastonite/vesuvanite/Ca-plag (>50%An)/forsterite/phlogopite; field term |
| Linked data | http://data.bgs.ac.uk/id/EarthMaterialClass/RockName/MARBLE |
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.