oxide

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oxides A group of minerals in which oxygen is combined with one or more metals to give simple and multiple oxides respectively. Simple oxides include hematite (Fe2O3), rutile (TiO2), and zincite (ZnO). Multiple oxides include the spinels (MgAl2O4) and hydrated oxides, e.g. goethite (FeO.OH). Oxides are economically important and are the principal sources of tin (SnO2), iron (Fe2O3, Fe3O4), chromium (FeCr2O4), titanium (TiO2), manganese (MnO2), and aluminium (Al2O3.2H2O). Oxides are relatively high-temperature minerals occurring in association with a variety of igneous rocks. They may also form as chemical precipitates in oxidized environments.

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ox·ide / ˈäkˌsīd/ • n. Chem. a binary compound of oxygen with another element or group.

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oxide XVIII. — F. oxide (now oxyde), f. oxygène OXYGEN + -ide, after acide ACID.

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oxide Any inorganic chemical compound in which oxygen is combined with another element. Oxides are often formed by burning the element in air or oxygen. Oxides are used to produce acids and manufacture glass.

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