The ore-forming process of ______ occurs as early-forming minerals settle to the bottom of a cooling magma.
A) crystal settling
B) hydrothermal solution
C) gravity deposition
D) mica and quartz
E) residue formation
Correct Answer:
Verified
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Q47: The major iron ore minerals are _.
A)
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A) quartz and
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Q52: Pencil lead is made of _.
A) gypsum
B)
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A) oxides
B) pegmatites
C)
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Q55: Phosphate is produced from _.
A) igneous rocks
B)
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A) asphalt
B) natural gas
C)
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