Look up: felsic

1. felsic
   Term used to describe the amount of light-colored feldspar and silica minerals in an igneous rock. Complement of mafic.
   Found on http://www.ucmp.berkeley.edu/glossary/gl
   
   
2. Felsic
   (Of rocks) essentially composed of the light coloured minerals feldspar and either feldspathoid or silica.
   Found on http://www.quartznall.co.uk/azhealthguid
   
   
3. Felsic
   An igneous rock having abundant light-colored minerals.
   Found on http://volcano.oregonstate.edu/education
   
   
4. Felsic
   The word "`felsic`" is a term used in geology to refer to silicate minerals, magma, and rocks which are enriched in the lighter elements such as silicon, oxygen, aluminium, sodium, and potassium. The term combines the words "`fel`dspar" and "accessdate=2008-02-08-->-->.) Fel...
   Found on http://en.wikipedia.org/wiki/Felsic