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Zinc Oxide Join now to read essay Zinc Oxide Zinc oxide in a mixture with a about 0.5% iron(III) oxide (Fe2O3) is called calamine and is used in calamine lotion. There are also two minerals, smithsonite and hemimorphite, which have been called calamine historically (see: calamine (mineral). Zinc peroxide, ZnO2 .Ѕ H2O, is a white.