Visible quartz and potassium feldspar grains are the main constituents in which igneous rock?
A) granite
B) gabbro
C) basalt
D) rhyolite
Correct Answer:
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Q61: Which of the following igneous rock always
Q62: In a porphyritic volcanic rock, which mineral
Q63: When a rock has a two-stage cooling
Q64: The aphanitic equivalent of peridotite is
A)komatiite
B)andesite
C)basalt
D)rhyolite
Q65: The phaneritic equivalent of basalt is
A)gabbro
B)granite
C)diorite
D)peridotite
Q67: Exceptionally coarse grained felsic plutonic rocks that
Q68: _ is a volcanic rock that is
Q69: What is the rock colour (total %
Q70: The aphanitic equivalent of granite is
A)rhyolite
B)andesite
C)basalt
D)komatiite
Q71: When magma cools and consolidates without growth
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