Which of the following is not an ore of copper ?
Correct answer: C. Cryolite
- A. Chalcopyrite
- B. Azurite
- C. Cryolite
- D. Malachite
Explanation
Azurite, chalcopyrite and malachite are recognised copper ores or ore minerals. Cryolite is a sodium aluminium fluoride mineral associated mainly with aluminium extraction, not copper.
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