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The non-metallic minerals associated with ore minerals are called _____________

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The non-metallic minerals associated with ore minerals are called _____________

(a) Non-metallic minerals

(b) Metallic minerals

(c) Gangue minerals

(d) Flux minerals

The question was asked during an interview for a job.

My question is based upon Origin of Ore Deposits in section Economic Mineral Deposits of Engineering Geology

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Right option is (c) Gangue minerals

For explanation: A few non-metallic minerals are often found associated with an ore-mineral. These have be separated from the ore before the same is processed for extraction of the metal. These associated minerals are called gangue minerals.

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