Lastien

Lastien is a fictional mineral described in science fiction literature and role-playing games. It is characterized by a distinctive metallic luster and a remarkably high electrical conductivity, along with unusual ionic mobility at room temperature. In most depictions, lastien forms under extreme conditions, either through nebular condensation in protoplanetary disks or high-pressure metamorphism within subduction zones. The mineral is typically represented as rare, with only a few confirmed occurrences in any given fictional setting. Its crystal structure is often depicted as a layered or lattice-rich arrangement that supports fast electron transport and low reactivity with common solvents.

Within these narratives, lastien is valued for enabling advanced energy systems, such as ultracapacitors, high-density batteries, and rapid data transmission components. Some sources tie its properties to quantum effects or superconductivity at accessible temperatures, though such claims vary across works. Extraction is portrayed as challenging due to scarcity, deep-hosted deposits, or planetary-scale mining operations; processing often requires specialized refining to preserve conductive phases and prevent oxidation.

In-world impact often includes economic and strategic significance, with rival factions competing to secure lastien supplies. Cultural references appear in several video games, tabletop campaigns, and speculative fiction anthologies, where lastien serves as a plot device for resource scarcity and technological advancement. Because lastien is a fictional construct, its properties and occurrences are defined by the individual work and may differ between sources.