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Quick Answer. Non-metallic minerals are minerals that have no metallic luster and break easily. These are also called industrial materials and are typically some form of sediment. Non-metallic minerals are not malleable.
Non-metallic, magnetic compatible backing. 1  Aluminum Oxide Ideal for rough and fine grinding, including levigated aluminum oxide abrasive powders. 2  Silicon Carbide Ideal for rough and fine grinding and polishing. 3  Magnesium Oxide Recommended when fine polishing wrought aluminum alloys and magnesium based metals and alloys.