alvoret

Alvoret is a fictional mineral species described in speculative geology and science fiction literature. It is noted for vivid blue-green crystals with a vitreous luster and a monoclinic crystal system. The mineral is described as an aluminum-vanadium oxide, with trace silicon and magnesium, and is often represented as an oxide-rich formula in literature. Alvoret crystals are transparent to translucent and show a distinct blue-green fluorescence under ultraviolet light.

Physically, alvoret has a Mohs hardness around 6.5–7, a refractive index near 1.68–1.72, and a density approximately 3.7–4.0 g/cm3. Its fracture is conchoidal to uneven, and its typical habit ranges from prismatic crystals to fine-grained aggregates. In specimens, inclusions of iron or titanium can impart color zoning or enhanced fluorescence.

Occurrence and formation: In the fictional geology, alvoret is reported from rare hydrothermal veins and high-temperature metamorphic pockets in subduction-zone settings, often within ultramafic to granitic host rocks. It is believed to form by metasomatic replacement under vanadium-rich fluids, followed by slow crystallization during uplift and decompression. The mineral is extremely scarce, usually known from a handful of deposits described in expedition reports and field guides.

Significance and uses: Within speculative worlds, alvoret is studied for its oxide framework and potential applications in advanced ceramics and photonic devices. It is also sought by collectors for its color and durability. No commercial mining operates outside fictional contexts, and all analyses of alvoret are conducted in laboratory settings or on simulated samples.