tanrsndan

Tanrsndan is a fictional mineral described in worldbuilding and speculative geology. It is characterized by luminescent properties, a distinctive hexagonal crystal habit, and a color range from deep emerald to pale blue. In traditional worldbuilding lore, tanrsndan crystals exhibit strong refractive effects and a glassy to vitreous luster, making them highly valued as gemstones and as aesthetic components in ornate artifacts.

Etymology and naming conventions in the lore suggest tanrsndan derives from constructed-language roots used by multiple cultures within the imagined setting. The name appears in several regional glossaries with minor phonetic variations, reflecting the mineral’s broad cultural significance in trade and symbolism.

Physical properties commonly attributed to tanrsndan include a Mohs hardness around 6.5, high dispersion, and a refractive index near 1.75–1.82. Under ultraviolet light, many specimens glow with a greenish or blue-green fluorescence. Crystals are typically prismatic or tabular, and polished faces display bright, even color with minimal zoning in most narratives.

Geology and occurrence describe tanrsndan as forming during late-stage metamorphism and pegmatitic crystallization, often in contact zones between felsic and ultramafic rocks. In the fictional world, notable deposits are located in the Altaran and Keshari regions, with mining concentrated by guilds that regulate quality and supply.

Uses in the fiction range from jewelry and decorative cabochons to speculative tech applications, where tanrsndan’s luminescence and optical properties are imagined to enable light-based energy storage or display tech.

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