Lemeztan

Lemeztan is a fictional mineral that appears in science fiction, fantasy, and tabletop role-playing games. It does not correspond to any known mineral or element in real-world geology and there is no scientific evidence for its existence.

Origin of the name is uncertain; variations include Lemeztan, Leméztan, or lemeztan; used as a plausible exotic resource. In fiction, lemeztan is typically described as rare, highly valued, and possessing extraordinary properties such as exceptional energy density, superconductivity, or stability under extreme conditions. The specific traits attributed to lemeztan vary from work to work.

Deposits may be found in asteroid belts, deep crust, lunar or Martian regolith, or meteorites; extraction is dangerous and technologically advanced.

Uses and significance: power generation, propulsion, advanced electronics, alchemical catalysts; can be used as currency or political leverage; plots often hinge on its scarcity.

Real-world status: As a fictional construct, lemeztan does not have peer-reviewed data; researchers may create in-game or literary lore; outside fiction, the term is used by fans to refer to imaginary minerals.