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___________ and ___________ are ores of copper.

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___________ and ___________ are ores of copper.

(a) Dolomite, bornite

(b) Bornite, chalcopyrite

(c) Chalcopyrite, dolomite

(d) Bornite, magnesite

I got this question in an international level competition.

I'd like to ask this question from Copper and its Alloys in division Copper and its Alloys of Aerospace Materials & Processes

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Best answer
The correct choice is (b) Bornite, chalcopyrite

Best explanation: Copper is very rarely found in its natural state. It has to be extracted from its ores through various processes. Copper has several ores in the world. Bornite and chalcopyrite are two ores of the element copper.

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