Vylouen

Vylouen is a fictional mineral noted in the lore and geotechnical references of the world of Eldoria. It is renowned for its vivid, blue-green bioluminescence and its intricate crystal habit, which forms slender, prismatic blades that fluoresce when illuminated.

Etymology and discovery: The name derives from the Old Vylian word vyla meaning light and uen meaning stone. First described in the geological surveys of the Lyran archipelago in the 9th century, Vylouen gained prominence after field notes by explorer Kestrel Aroa.

Properties: Vylouen comprises a framework of silicate minerals with trace rare earth elements, notably europium and terbium, which produce luminescence. On the Mohs scale it ranges from 6 to 7. It is relatively brittle with a glassy luster and is highly prized for its optical properties.

Occurrence and production: It forms in high-temperature, low-fluid zones within basaltic magmas and hydrothermal veins. Commercial deposits are confined to several volcanic belts in Eldoria; synthetic production via hydrothermal synthesis or solid-state doping has been explored to stabilize supply.

Uses and cultural significance: In Eldorian culture, Vylouen is used in ornamental artifacts and as a source of light in ceremonial objects. In modern industry, it serves as a luminescent material for decorative panels and research into solid-state lighting. Conservation concerns include habitat protection and ethical mining practices.