oxides

views updated May 08 2018

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.

oxide

views updated May 14 2018

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

oxide

views updated May 29 2018

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

oxide

views updated Jun 11 2018

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.