Question:
Which of the following minerals exhibits the optic interference figure given below?
Which of the following minerals exhibits the optic interference figure given below?
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Optic interference figures are critical in identifying minerals in thin section and understanding their optical properties.
Updated On: Dec 11, 2025
- Quartz
- Diopside
- Garnet
- Orthoclase
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The Correct Option is A
Solution and Explanation
Step 1: Understanding Optic Interference Figures.
The optic interference figure represents the optical properties of minerals under a polarized light microscope. Diopside is a mineral that shows distinct interference figures due to its birefringence.
Step 2: Analyzing the options.
(A) Quartz: Incorrect — Quartz is typically isotropic and does not show interference figures.
(B) Diopside: Correct — Diopside exhibits strong interference figures due to its birefringence.
(C) Garnet: Incorrect — Garnet is isotropic and does not show interference figures.
(D) Orthoclase: Incorrect — Orthoclase is also not known for showing such interference figures.
Step 3: Conclusion.
The correct answer is (B) Diopside, as it exhibits the optic interference figure shown.
The optic interference figure represents the optical properties of minerals under a polarized light microscope. Diopside is a mineral that shows distinct interference figures due to its birefringence.
Step 2: Analyzing the options.
(A) Quartz: Incorrect — Quartz is typically isotropic and does not show interference figures.
(B) Diopside: Correct — Diopside exhibits strong interference figures due to its birefringence.
(C) Garnet: Incorrect — Garnet is isotropic and does not show interference figures.
(D) Orthoclase: Incorrect — Orthoclase is also not known for showing such interference figures.
Step 3: Conclusion.
The correct answer is (B) Diopside, as it exhibits the optic interference figure shown.
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