Uridium

Uridium was an unstable mineral used in Cardassian ship construction. Generally, uridium alloy was used in their ship's sensor arrays. 

In its raw form, uridium could explode if exposed to an electrical charge. The Cardassian mining station Terok Nor was used to extract and process uridium from Bajor during the Cardassian Occupation. 

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Uridium