Tranquillites

Tranquillites is a term used in speculative fiction to denote a fictional mineral or crystalline material with properties that promote calm and stability in nearby matter or devices. The term is not recognized in real-world mineralogy and is used as a narrative device across novels, films, and role-playing games.

Description: In most depictions, tranquillites are described as translucent to pale blue crystals with high mechanical strength and chemical inertness. They are valued for high thermal stability and the ability to damp electromagnetic disturbances and vibrations. Some stories also attribute to tranquillites the capacity to reduce stress responses in adjacent organisms, often at the cost of slower reaction times or diminished alertness.

Applications in fiction: Common uses include energy storage, shielding for spacecraft, and calming environments within medical facilities or living habitats. The material can also serve as a plot device, linking political or economic conflicts to its supply, distribution, and regulation.

Etymology: The name blends 'tranquil' with the -lite suffix used in mineral nomenclature, signaling both calm properties and crystalline form.

See also: minerals in fiction, energy storage in science fiction, fictional materials, calmness.