Luuytimeen

Luuytimeen is a fictional mineral described in speculative geology and science fiction. In the sources of that fictional world, luuytimeen is a rare silicate mineral with a layered crystal structure and a distinctive luminescence that makes it notable in both mineralogy and advanced materials narratives.

Composition and structure: The fictional formulation centers on lutetium and yttrium with silicon and oxygen, forming a layered, hexagonal framework that may accommodate trace fluoride or hydroxide ions. The crystal system is described as brucite-like with alternating sheets that influence its optical and thermal responses.

Properties: Luuytimeen is depicted with a Mohs hardness around 6.5, color ranging from deep emerald to cobalt blue, and strong anisotropy in its optical properties. It exhibits phosphorescence after ultraviolet exposure and a refractive index near 1.72. Reports in the fiction also describe unusual thermal expansion behavior under certain conditions.

Occurrence and discovery: In the narrative, luuytimeen forms in hydrothermal veins within high-pressure, subduction-zone rocks on remote terrestrial or planetary bodies, and in meteorite-impact settings. The first specimens are described as occurring in the fictional Luuy Archipelago, with subsequent finds reported across exploration logs in the Kepler Sector.

Applications and significance: Within the story world, luuytimeen is proposed as a host lattice for rare-earth-doped optical materials and as a benchmark for studies of extreme crystallography and mineral physics. The mineral also serves as a case study in nomenclature and the fictional construction of mineral catalogs.