MillibylgjuA

MillibylgjuA is a fictional mineral described in speculative fiction and tabletop role-playing materials. It is commonly depicted as a rare semimetal with luminescent inclusions and notable electrical conductivity, traits that make it a sought-after resource in both technological and aesthetic contexts within its fictional setting.

Origin of the name and discovery: The term millibylgjuA was introduced by the author K. Nareth in a contemporary canon. The prefix milli- signals a small-scale occurrence, while byl is a regional term for mineral veins in the narrative world, and A designates the first reproducible phase. Different works within the same universe may assign alternate phase labels to reflect mineral aging or processing history.

Physical properties: In canonical descriptions, millibylgjuA crystallizes in a hexagonal system with prismatic crystals. Reported hardness ranges from 7.2 to 7.8 on the Mohs scale; color spans emerald green to deep blue; it exhibits a metallic to adamantine luster and shows bright blue-green photoluminescence under ultraviolet light. Densities are often cited around 5.5–6.2 g/cm3. Reports vary on stability, but the material is generally described as brittle yet capable of thin-sheet toughness.

Occurrence and formation: In-universe geology places millibylgjuA in ultramafic rock complexes of the fictional Valoris Range, formed by high-temperature hydrothermal fluids and metamorphic reactions that concentrate its constituent elements. It is commonly associated with quartz, magnetite, and sulfide minerals, with phase A sometimes showing slight compositional variation compared to later phases.

Uses and cultural role: MillibylgjuA is valued for purported low-loss electrical conduction at nanoscale and its luminescent properties, which appear in decorative artifacts and in fictional photonic devices. Mining and handling emphasize brittleness and careful extraction, as fragments can be sharp and reactive in certain processing steps.