BGS Rock Classification Scheme

Fenite - A type of metasomatic-rock. Fenites are desilicated crustal rocks formed by reaction with Na- and K-rich fluids expelled during the emplacement of carbonatite or undersaturated alkaline magmas. British Geological Survey Research Report RR/99/02, section 8.

Code FENITE
Description Fenite - A type of metasomatic-rock. Fenites are desilicated crustal rocks formed by reaction with Na- and K-rich fluids expelled during the emplacement of carbonatite or undersaturated alkaline magmas. British Geological Survey Research Report RR/99/02, section 8.
Qualifiers No qualifiers currently exist.
Definition Metamorphic rock (grain size & protolith undefined) with significant chemical/mineralogical alteration, desilicated due to reaction with Na/K-rich fluids derived from carbonatite/unsaturated alkaline magmas; a metasomatic rock
Linked data http://data.bgs.ac.uk/id/EarthMaterialClass/RockName/FENITE

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.