Multiple Choice
Why is pegmatite an economically important igneous rock?
A) Pegmatite's crystals are huge, so they are very valuable.
B) Pegmatite is very rare, so it is valuable.
C) Pegmatite's crystallization process causes the enrichment of rare ore minerals.
D) Pegmatite is perfect for the production of certain weaponry.
Correct Answer:
Verified
Correct Answer:
Verified
Q11: Which process forms pahoehoe lava formations?<br>A) Very
Q12: Why is methane gas the least abundant
Q13: Volcanic bombs do not explode.
Q14: A scientist identifies a rock sample as
Q15: Magma consists of oxides of silicon, aluminum,
Q17: How do igneous products form and why
Q18: Briefly describe how igneous rocks are classified.
Q19: Why is the texture of the igneous
Q20: Why are igneous rocks that form below
Q21: Why is peridote considered a coarse-grained ultramafic