Llogariten

Llogariten is a fictional mineral used in speculative fiction and worldbuilding to explore geology, chemistry, and technology. It does not appear in real mineralogical catalogs or geological databases, but is described across multiple stories and community-developed setting documents.

The name is a coined neologism in worldbuilding circles; there is no standardized etymology beyond its function as a mineral-like term in fiction.

In most depictions, llogariten is a dense substance with a metallic to pearly luster, ranging in color from steel-gray to iridescent blue. It is described as having Mohs hardness around 4–6, a high refractive index, and a pale streak. It may appear crystalline or massive, and often shows distinctive optical effects in illustrations.

The composition is typically framed as a silicate-oxide framework with intercalated metallic inclusions, yielding conductive and optically distinctive properties. Some creators describe a layered or mosaic-like crystal structure, which enables unusual anisotropy and light interaction used for visual effects in stories.

In-world occurrence places llogariten in basaltic and ultramafic settings, within deep-vein systems, or as inclusions in meteorites in certain fictional universes. It is often associated with sulfides and rare earth–rich phases. Its scarcity and distinctive features drive plot points or economic tension in narratives.

Uses in fiction include energy storage, catalysis, and ornamental jewelry. As a plot device, its rarity and enigmatic properties encourage exploration, trade routes, and political intrigue, making llogariten a common reference in speculative worldbuilding discussions.