BGS Rock Classification Scheme

Metacarbonate-rock - A type of metasedimentary rock composed largely of calcsilicate and/or carbonate minerals. In the Rock Classification Scheme, it is one in which the modal carbonate mineral content exceeds the modal abundance of calcsilicate minerals. British Geological Survey Research Report RR/99/02, section 3.2 and fig. 7.

Code MCABR
Description Metacarbonate-rock - A type of metasedimentary rock composed largely of calcsilicate and/or carbonate minerals. In the Rock Classification Scheme, it is one in which the modal carbonate mineral content exceeds the modal abundance of calcsilicate minerals. British Geological Survey Research Report RR/99/02, section 3.2 and fig. 7.
Qualifiers No qualifiers currently exist.
Definition Carbonate-rock (grain size, protolith undefined); carbonate>calc-silicate minerals >50% +/-calcite/diopside/epidote/grossular/Ca-amphibole/titanite/uvarovite/wollastonite/vesuvanite/Ca-plag (>50%An)/forsterite/phlogopite.
Linked data http://data.bgs.ac.uk/id/EarthMaterialClass/RockName/MCABR

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.