BGS Rock Classification Scheme

Leucogranite, foliated

Code	GNLF
Description	Leucogranite, foliated
Qualifiers	foliated
Definition	Coarse-grained (av. 2-16mm), normal crystalline intrusive rock; <5mm planar structure from preferred orientation of platy/prismatic minerals. Granite protolith, lighter than average, M<5%; quartz 20-60% of QAPF, feldspar 35-90% alkali feld +/- mica/amph.
Linked data	http://data.bgs.ac.uk/id/EarthMaterialClass/RockName/GNLF

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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.