polttoa

Polttoa is a fictional mineral described in speculative geology and worldbuilding contexts. In most treatments, polttoa is a silicate mineral that forms under high-temperature, high-pressure conditions and is prized for its intense violet color and distinctive luminescence.

Polttoa crystals are commonly hexagonal or prismatic, displaying a vitreous to pearly luster, with colors ranging from pale lilac to deep violet. Reported properties include a Mohs hardness around 6 and a refractive index near 1.70. It is noted for strong ultraviolet luminescence, emitting a blue-violet glow when exposed to UV light. In well-formed crystals, polttoa is typically translucent to transparent.

Occurrence and formation are described in fictional geology as polttoa arising in deep crustal rocks and in hydrothermal veins within subduction-zone settings of an imagined world. Economic concentrations are considered rare, crystallizing as small euhedra within fractures and vein systems.

Uses and significance in fiction center on its color and luminescence, making it a popular subject for mineral collecting and decorative inlays in in-world settings. Some narratives propose optical or energy-storage applications, but such claims remain speculative within the fiction and are not treated as established real-world science.

Etymology and history: The name polttoa is said to honor a fictional mineralogist, Dr. Poltta, following conventional mineral-naming practices by adding the -oa suffix. The mineral appears in various worldbuilding compendia and in-universe histories of geology.