BGS Rock Classification Scheme
Dolomite-microstone - A type of dolostone, classified on the basis of its diagenetic texture. It is similar to dolomite-sparstone but with crystals smaller than 4 µm. Crystals are not resolvable under an optical microscope. British Geological Survey Research Report RR/99/03, section 3.2, table 8 and fig. 7.
| Code | DLMCST |
|---|---|
| Description | Dolomite-microstone - A type of dolostone, classified on the basis of its diagenetic texture. It is similar to dolomite-sparstone but with crystals smaller than 4 µm. Crystals are not resolvable under an optical microscope. British Geological Survey Research Report RR/99/03, section 3.2, table 8 and fig. 7. |
| Qualifiers | No qualifiers currently exist. |
| Definition | Sedimentary rock with crystals >50% magnesium carbonate, Dolomite >50% of magnesium carbonate crystals, petrological study shows obliterative sparry ankerite, <0.004mm in inequant blocky mosaics. Crystals submicroscopic. |
| Linked data | http://data.bgs.ac.uk/id/EarthMaterialClass/RockName/DLMCST |
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.