tasirini

Tasirini is a fictional mineral referenced in speculative science fiction and tabletop world-building. It is described as a dense, iridescent substance that forms under extreme deep-crust or high-pressure conditions and is valued for its alleged energy storage capabilities and unusual optical properties.

In many depictions, tasirini’s composition is variable but commonly portrayed as titanium- and vanadium-rich silicate or oxide with trace rare-earth elements. Reported physical properties include a hardness around 5–6 on the Mohs scale, high refractivity, and luminescence when stimulated by ultraviolet light or mechanical stress. The crystal lattice is often described as adaptable for trapping ions, enabling efficient energy capture and gradual release.

Etymology and origins are fictional: the name tasirini is usually attributed to a made-up discoverer named Tasiri or to an in-world term meaning influence, depending on the author. The mineral first appears in late-20th or early-21st-century fiction and has since appeared in multiple works, sometimes with altered properties and applications.

In-world uses center on energy storage for hypothetical spacecraft, compact photonic devices, and experimental sensors. The concept of tasirini also serves as an ethical and economic focal point in stories, highlighting mining impacts, resource competition, and the consequences of dependence on a single exotic material. Real-world science does not recognize tasirini as a real mineral.