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| 1. |
What are non metallic minerals?. |
| Answer» Non-metallic mineral\xa0reserves consist of stone quarries and clay and sand pits; chemical and fertiliser\xa0mineral\xa0deposits; salt deposits; deposits of quartz, gypsum, natural gem stones, asphalt and bitumen, peat and other\xa0non-metallic minerals\xa0other than coal and petroleum. | |