proicis

Proicis is a fictional mineral described in speculative geology and world-building literature. It is depicted as a rare magnesium-iron silicate with a pale blue to blue-green color and a chatoyant, cat’s-eye shimmer when cut en cabochon.

Discovery and naming: The mineral is said to have been first described by geologist Elena Kirov in 1987 from samples in the Proica Basin. The name derives from the Proica region and the suffix -cis used for mineral names in some fiction.

Composition and properties: Proicis is described as a Mg-Fe rich silicate with traces of Ti and Cr. It is associated with ultramafic rocks such as dunite and serpentinized peridotite and with minerals like olivine, pyroxene, and magnetite. It is said to fluoresce weakly under UV light.

Occurrence and formation: In the fiction, proicis forms through metasomatic replacement in high-temperature, high-pressure conditions typical of orogenic belts. It is chiefly reported in deep crustal slices of the Proica Basin’s metamorphic complex.

Uses and cultural context: Within the imagined setting, proicis is used in jewelry and as a speculative material for photonic or decorative applications because of its color and chatoyancy. It is not recognized by real-world mineralogical authorities.

References: Kirov, E. (1987). The Proica Basin Minerals. Journal of World-Building Geology.