Question:
Which one of the following does NOT have a polymorph?
Which one of the following does NOT have a polymorph?
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Polymorphs of a mineral crystallize in different forms due to variations in temperature and pressure conditions.
Updated On: Sep 6, 2025
- Fluorite
- Pyrite
- Calcite
- Diamond
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The Correct Option is A
Solution and Explanation
A polymorph is a mineral that can crystallize in more than one form, having different crystal structures while maintaining the same chemical composition.
- Fluorite has multiple polymorphs such as cubic and octahedral forms.
- Pyrite crystallizes in one form, which is the cubic structure, so it does not have any polymorphs.
- Calcite has polymorphs like aragonite and vaterite, both being forms of calcium carbonate.
- Diamond, though a form of carbon, doesn't have any polymorphs as it has only one structure, making it a unique crystalline form of carbon.
Thus, the correct answer is option (A). Final Answer: \[ \boxed{\text{Fluorite}} \]
- Fluorite has multiple polymorphs such as cubic and octahedral forms.
- Pyrite crystallizes in one form, which is the cubic structure, so it does not have any polymorphs.
- Calcite has polymorphs like aragonite and vaterite, both being forms of calcium carbonate.
- Diamond, though a form of carbon, doesn't have any polymorphs as it has only one structure, making it a unique crystalline form of carbon.
Thus, the correct answer is option (A). Final Answer: \[ \boxed{\text{Fluorite}} \]
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