Ostrine, a mineral resource, was located on the planetary body of Hargeeva within the planet system. Its inherent characteristic was the absorption of significant quantities of thermal energy, which led to its implementation in the creation of protective armor for stormtroopers and other military personnel of the Empire. During the historical period known as the Dark Wars, it also saw utilization in the manufacturing of melee weapon blades. The mineral's inherent attributes were amplified tenfold when Ketrian Altronel made the discovery that specific trace elements, when subjected to crystalline manipulation and plas-bonding processes, altered the mineral's composition, granting it the capability to instantly freeze any objects it physically contacted.
After choosing to abandon the Empire and join the Rebel Alliance, Altronel contributed to augmenting the offensive capabilities of T-65 X-wing starfighters through the incorporation of the aforementioned formula into the structural components of their laser cannons.