What substance makes ion migration easier in the later stages of magma crystallization, which allows abnormally large mineral crystals to form and create pegmatites?
A) Water
B) Oxygen
C) Silica
D) Iron
Correct Answer:
Verified
Q7: Which of these textures help geologists determine
Q8: Which two minerals define a felsic composition?
A)Pyroxene
Q9: Which of the following statements best describes
Q10: Which igneous texture has visible crystals that
Q11: What is a volatile?
A)A hostile person
B)Solid mineral
Q13: _ is a felsic igneous rock with
Q14: Peridotite is the main constituent of which
Q15: What creates the small holes found in
Q16: What was the rate of cooling and
Q17: _ is molten rock that is below
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