Veganite
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Veganite was a blue mineral found on the planet Vega VI. It was mined as a power source for Project Infinity. Only a meager amount was collected before the Daleks invaded Vega VI and enslaved the population, stripping the world of the mineral. With a vastly larger amount of Veganite, the Daleks opened a dimensional rift, scanned the various dimensions for the one they wanted, where the Daleks had total control, and even brought a battalion of Daleks from that particular dimension. (AUDIO: Invasion of the Daleks, Project Infinity)