Tarthatnak

Tarthatnak is a rare mineral characterized by a translucent to opaque iridescent appearance, belonging to a class of silicate minerals with metallic inclusions. The name derives from the fictional Nivaric language, meaning "light stone." The mineral occurs as prismatic crystals up to several centimeters in length, often intergrown with basaltic host rock.

Formation occurs in high-temperature hydrothermal systems associated with recent magmatic activity. It crystallizes under pressure around 300-600°C and moderate sulphide activity. Its composition is roughly a silicate with trace iron, copper, and nickel inclusions, which give color variation and luminescence.

Occurrence: Confirmed deposits are in the Tarthatnak Crater region on the island chain of Vaelor. Other attributions include sporadic finds in rift zones of the northern archipelago; as of the 2020s, only a few operating mines exist.

Uses: Valued for its pale-blue to emerald glow under ultraviolet light, making it sought after for jewelry and decorative objects. Experimental energy-storage prototypes using its luminescent and conductive properties have been reported in academic papers, though practical applications remain limited.

Cultural significance: In Vaelor culture, tarthatnak is linked to sunlit beginnings and is often incorporated into ceremony amulets to symbolize resilience. The mineral is also the subject of contemporary art and local folklore.

Research and conservation: The deposits are finite; mining is regulated to limit environmental impact. Ongoing research focuses on precise composition, crystal structure, and potential technological uses.