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Manganese Facts - Periodic Table of the Elements

Ordinary manganese is a hard and brittle gray-white metal. It is chemically reactive and slowly decomposes in cold water. Manganese metal is ferromagnetic (only) after special treatment. There are four allotropic forms of manganese. The alpha form is stable at normal temperatures. The gamma form changes to the alpha form at ordinary temperature.

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Manganese - Wikipedia

Manganese is a transition metal with important industrial alloy uses, particularly in stainless steels. Historically, manganese is named for pyrolusite and other black minerals from the region of Magnesia in Greece, which also gave its name to magnesium and the iron ore magnetite.

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Manganese - Element information, properties and uses ...

Manganese is the fifth most abundant metal in the Earth's crust. Its minerals are widely distributed, with pyrolusite (manganese dioxide) and rhodochrosite (manganese carbonate) being the most common. The main mining areas for manganese are in China, Africa, Australia and Gabon. The metal is obtained by reducing the oxide with sodium ...

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In its elemental form, manganese has a silvery metallic appearance. It is a paramagnetic metal that oxidizes easily in addition to being very hard and brittle. Manganese is found as a free element in nature and also in the minerals pyrolusite, braunite, psilomelane, and rhodochrosite.

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manganese | Uses, Facts, & Compounds | Britannica

The most important manganese compound is manganese dioxide, in which manganese is in the +4 oxidation state, and the black mineral pyrolusite is the chief source of manganese and all of its compounds. It is also widely used as a chemical oxidant in organic synthesis. Manganese dioxide is used as the cathode material in dry-cell batteries. It is ...

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Facts About Manganese | Live Science