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Granodiorite
Granodiorite
() is a
phaneritic
texture
intrusive
igneous rock
similar to
granite
, but containing more
plagioclase feldspar
than
orthoclase feldspar
. According to the
QAPF diagram
, granodiorite has a greater than 20%
quartz
by volume, and between 65% to 90% of the feldspar is plagioclase. A greater amount of plagioclase would designate the rock as
tonalite
.
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