A dull orange block by nature, Renium is not obvious when created in natural deposits. What gives them away is their tell tale pulsating interior and high heat capacity. While in its natural state, Renium deposits remain in a state of equilibrium, in that their heat input and heat output remain balanced. Once removed from their source, that balance is quickly thrown off. High heat resistance protective gear is required to properly handle both raw and processed Renium.
In recent laboratory studies, it is found that Renium, when properly contained and under the right conditions, can generate large amounts of thermal energy, far more than they seemingly hold at any given time. This may be due to some highly efficient micro-organism within the rock itself. More testing is required to confirm this theory.
The theory of micro organisms holds true! Renium is, in fact, home to many single cell organisms that utilize heat and turn it into their own energy. The energy they release has 97.3% the heat they initially take in, thus making a chain reaction that keeps the temperature of the Renium at high levels. By containing the Renium in cylinders of at least four units (one unit is akin to one cubic meter) one can attain a reactive process that, if calculations are correct, will last upwards of fifty years. Further testing is required to obtain a more stable containment, as current methods stand at a safety level of 87% stability.