Quartz is
A) a variety of feldspar.
B) a variety of white mica.
C) composed of calcium carbonate.
D) composed of silicon dioxide.
Correct Answer:
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Q3: The rapid cooling of lava on the
Q5: An example of a light-colored, coarse-grained intrusive
Q9: A mineral that does not contain silicon
Q11: Mica is present in
A)marble.
B)chert.
C)basalt.
D)gneiss.
Q12: An example of a dark, fine-grained volcanic
Q13: A mineral never found in igneous rocks
Q13: Feldspar is
A)relatively rare in the earth's crust.
B)the
Q16: The light-colored silicate minerals all contain
A) iron.
B)
Q18: Which one of the following statements concerning
Q20: The metamorphosis of shale may produce
A) marble.
B)
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