Which of the following statements about gemstones is NOT true?
A) Gemstones can form when preexisting rock is subjected to extraordinary pressure and heat.
B) Gemstones can form when molten rock cools and crystallizes deep underground.
C) Gemstones are formed only from very rare minerals.
D) The color in gemstones may result from a few atoms scattered throughout its crystal structure.
Correct Answer:
Verified
Q1: Which of the following statements about mineral
Q3: A van der Waals bond is a
Q4: Which of the following statements concerning crystals
Q5: In a covalent bond, atoms:
A) share electrons.
B)
Q6: The term polymorphism refers to:
A) two mineral
Q7: In an ionic bond, atoms:
A) lose or
Q8: Which of the following statements concerning diamonds
Q9: Which of the following statements concerning hydrogen
Q10: Mineral cleavage indicates:
A) unequal bond strength in
Q11: The mineral quartz is distinctive because it
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