BGS Rock Classification Scheme
Trona - A type of Na carbonate sedimentary rock. Trona (Na2CO3.NaHCO3.2H2O) is characterised by monoclinic crystals that form in fibrous or columnar layers and masses. British Geological Survey Research Report RR/99/03, section 3.3.
| Code | TRONA |
|---|---|
| Description | Trona - A type of Na carbonate sedimentary rock. Trona (Na2CO3.NaHCO3.2H2O) is characterised by monoclinic crystals that form in fibrous or columnar layers and masses. British Geological Survey Research Report RR/99/03, section 3.3. |
| Qualifiers | No qualifiers currently exist. |
| Definition | Primary sodium carbonate precipitate. Na2CO3.NaHCO3.2H2O crystals monoclinic, fibrous or columnar layers & masses. No unlithified equivalent. Crystal size not defined. An evaporite. |
| Linked data | http://data.bgs.ac.uk/id/EarthMaterialClass/RockName/TRONA |
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.