Type Uranium Mineral
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Accessory mineral(s) {{{Accessory mineral(s)}}}

Uraninite is a uranium-rich mineral that is found in gray to black colors, and contains trace amounts of radioactivity due to the radium content and effects of radioactive decay. Uraninite minerals also contain lead isotopes in small amounts as well as Helium, due to alpha decay, a form of radioactive decay.


  • An interesting fact this mineral is that the first source of helium was found inside of uraninite.

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