Igneous Rocks Flashcards
1
Q
aphaneritic texture
A
fast cooled, small crystals
2
Q
phaneritic texture
A
slow cooled, large crystals
3
Q
poryphyrite texture
A
large surrounded by small
4
Q
glassy texture
A
no crystals
5
Q
pyroclastic texture
A
magma that fell to the ground
6
Q
mafic composition
A
dark, less silica
7
Q
felsic composition
A
light, more silica
8
Q
felsic rocks
A
light, quartz, orthoclase
granite, rhyolite
9
Q
mafic rocks
A
dark, plagioclase, pyroxene
gabbro, basalt(solid)
10
Q
intermediate rock
A
plagioclase, orthoclase
diorite (dalmation), andesite
11
Q
ultramafic
A
olivine
peridotite
