92 U Uranium actinide

Uranium

Atomic number 92
Symbol U
Category Actinide
Crystal system Orthorhombic
2 minerals in the collection
Discovered : Martin Heinrich Klaproth, 1789. In pitchblende (uraninite).
Found in : Uraninite, autunite, torbernite, carnotite.
Used for : Nuclear fuel, military applications, historical glass pigment.
Remarkable : Autunite and torbernite fluoresce brilliant green under ultraviolet light. Uranium's decay chain ultimately produces stable lead.

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