Krambreid

Krambreid is a fictional mineral described in speculative geology and worldbuilding. It does not correspond to any mineral recognized by real-world mineralogists, but it is used to illustrate rock- and crystal-forming processes in imagined environments.

In the fictional account, krambreid forms as transparent to pale-blue prisms with a high refractive index and strong birefringence. Reported properties include a Mohs hardness around 6, a density near 4.0 g/cm3, and cleavage that yields elongated crystals. The composition is deliberately flexible within its worldbuilding context, often represented as a complex silicate or aluminosilicate with trace rare-earth elements.

Formation and occurrence are described as linking krambreid to high-temperature, high-pressure metamorphism in ultramafic and mafic rocks, sometimes crystallizing from hydrothermal fluids in deep crust settings. It is typically rare, occurring in limited vein deposits or as inclusions within metamorphic masses in imagined landscapes.

Uses and significance in fiction commonly position krambreid as a plot device for exotic material with unusual physical or hypothetical electronic properties. It appears in catalogs, trade lore, and fictional geologies as a scarce resource that can influence economies, technology, or exploration narratives in worldbuilding contexts.

Etymology for krambreid is rooted in invented linguistic traditions within its fictional settings; there is no real-world etymology. Real-world mineral databases contain no entry for krambreid, underscoring its status as a constructed concept for storytelling.