lõngasid

Lüngasid is a fictional mineral described in speculative science and world-building contexts. It is depicted as a dense, lamellar material with a pale iridescent sheen and a lattice that can store and release energy when stimulated by heat, electric fields, or pressure. The substance is valued in narratives for its luminescent response and potential as a passive energy reservoir.

The name lüngasid is a constructed term with no real-world etymology; it appears in the setting's lore and does not correspond to any documented natural language.

In the lore, lüngasid was first reported from hydrothermal vein systems in the imagined Aravon Basin during late 22nd-century expeditions. It is described as forming in silicate-phosphate lattices doped with rare-earth cations, yielding a material with variable optical and electrical properties.

Typical physical properties include Mohs hardness around 5.5–6, density near 4.0 g/cm3, and a vitreous to pearly luster. It is described as thermoluminescent and cathodoluminescent, emitting blue to green light under stimulation. The material is said to be chemically stable under ambient conditions but sensitive to strong reducing environments.

Occurrence and synthesis: In the fictional setting, lüngasid forms in high-temperature hydrothermal vents and is found in small prismatic crystals up to several centimeters. It can be synthesized in laboratories via solid-state or hydrothermal methods, though reproducing authentic lattice order is challenging.

Applications and research: In-world literature, lüngasid is proposed for energy storage, luminescent displays, and radiation sensors. Debates in the setting concern reproducibility, stability, and practical scalability.