Pitchblende. This is a rich ore of uranium, properly called uraninite, largely composed of uranium (IV) oxide (UO2) but also containing triuranium oct

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Pitchblende. This is a rich ore of uranium, properly called uraninite, largely composed of uranium (IV) oxide (UO2) but also containing triuranium octoxide (U3O8). Uranium was first discovered in a sample of pitchblende by Klaproth in 1789.

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