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Naquadria is an unstable radioactive variation of Naquadah.


The material can produce a massive amount of energy, much more than weapons grade Naquadah. Reactions involving Naquadria can produce neutron radiation. (SG1: "Meridian") The instability in Naquadria increases as more energy is produced. (SG1: "Redemption, Part 1", "Redemption, Part 2") Certain subatomic particles can cause Naquadah to be converted into Naquadria with any left over breaking down into other elements. After thousands of years the Naquadria converts back into Naquadah, also producing Deuterium and Helium during this process. (SG1: "Fallout")


Thanos did an experiment on Naquadria and almost blew Langara to bits. Kelowna began experimenting on creating a Naquadria bomb after discovering this material. Their experiments caused a burst of neutron radiation which killed the scientists working on it and Daniel Jackson. Jonas Quinn stole a supply of Naquadria and gave it to Stargate Command. (SG1: "Meridian") The material was used in a Hyperdrive for the X-302 but it proved too unstable. (SG1: "Redemption, Part 1", "Redemption, Part 2") The Kelownans discovered old mine shafts below the temple they uncovered and processed over 300 pounds of Naquadria. Dr. Kieran smuggled small amounts of Naquadria out to the resistance, who were a figment of his imagination, which was later recovered by SG-1. (SG1: "Shadow Play") Naquadria was used to power the hyperdrive of the Prometheus. (SG1: "Prometheus") Anubis came to Langara and took all the Naquadria that the Kelwonans had. He set a Goa'uld scientist to incorporate it into the weapons power core but his solution to overcome the instability failed and it caused an overload. (SG1: "Homecoming")

A vein of Naquadah on Langara was being converted into Naquadria and the pressure and heat would cause it to detonate and destroy Langara. The vein had a fault line and a bomb was used to sever it and prevent it from converting entirely. (SG1: "Fallout") Samantha Carter developed the Gate buster, a Naquadria-enhanced nuclear bomb. (SG1: "Beachhead") P4X-351 has Naquadria throughout its crust which generated lots of heat. Icarus Base was built on the planet to harness the power of the planet. When the Lucian Alliance attacked the planet it caused a chain reaction in the core that destroyed the planet. (SGU: "Life", "Air, Part 1") The Alliance found another planet with Naquadria deposits and used it to dial into Destiny, which caused an overload in the core and destroyed the planet. (SGU: "Subversion") The Alliance used Naquadria to create bombs. (SGU: "Alliances") Langara created a power facility to draw power from the Naquadria core. (SGU: "Seizure")