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Additional
felsic
English Wikipedia - The Free Encyclopedia
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Felsic
In
geology
felsic
refers to
igneous rocks
that are relatively rich in elements that form
feldspar
and
quartz
. It is contrasted with
mafic
rocks, which are relatively richer in
magnesium
and
iron
(
ferric
). It refers to those rocks rich in
silicate minerals
,
magma
, and
rocks
which are enriched in the lighter elements such as
silicon
,
oxygen
,
aluminium
,
sodium
, and
potassium
.
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