Kaloreid

Kaloreid is a term used in speculative geology and some science fiction to denote a hypothetical potassium-rich aluminosilicate mineral. It is not recognized by professional geologic databases, and no samples have been documented in peer-reviewed literature. In the hypothetical framework, kaloreid is described as forming in high-temperature hydrothermal or magmatic environments where potassium is abundant; proposed crystal systems include monoclinic or orthorhombic, with a vitreous to resinous luster. The color ranges from pale green to iridescent hues, with a Mohs hardness commonly placed around 6 to 7, and a relatively high density of about 3.2–3.6 g/cm3. Its key attributes are a high resistance to thermal decomposition and a capacity for luminescence under ultraviolet light when doped with certain activator ions.

In speculative contexts, kaloreid is considered for applications in energy storage materials and high-temperature coatings due to its stability at elevated temperatures and good thermal conductivity. Synthetic production is described in fiction as synthesized by solid-state reaction of potassium, aluminum, and silicon oxides at temperatures above 1200°C, sometimes within pressure vessels to promote crystal growth. Researchers in these fictional narratives have discussed potential challenges such as controlling impurities and achieving phase-pure samples.

Because kaloreid lacks verified specimens, current discussions remain within theoretical or literary frameworks. Real-world verification would require crystallographic analysis, geochemical assays, and peer-reviewed publication.