Valkuaine

Valkuaine is a fictional mineral described in science fiction and speculative science literature. It is depicted as a copper- and rare-earth–bearing aluminosilicate with notable luminescent and energy-storage properties.

Discovery and naming: In the in-universe chronology, Valkuaine was first described by researchers at the Valka Institute on the moon Valkara, part of the Valari system, during the late 23rd century. The name combines Valkyrie imagery with the -aine suffix commonly used for silicate minerals.

Crystal chemistry and physical properties: Valkuaine is described as a layered aluminosilicate solid solution with copper and rare-earth trace elements such as gadolinium or europium. The approximate formula is given as (Cu_xRE_y)Al3Si6O20(OH)4, where x and y denote minor substituents. It crystallizes in the monoclinic system and exhibits a vitreous to pearly luster. Color ranges from deep blue to violet; Mohs hardness around 5–6; density about 3.0–3.3 g/cm3. It shows strong UV-induced luminescence and moderate pleochroism.

Formation and occurrence: Valkuaine is said to form in high-temperature hydrothermal veins within basaltic crusts, where silicate fluids are enriched with copper and rare-earth metals. In fiction, it is commonly found with quartz, magnetite, and calcite and is often embedded in vein fills or as nodular masses.

Applications and synthesis: Within the imagined setting, Valkuaine is proposed for solid-state energy storage as a thin-film electrolyte, and for photonic devices due to its luminescent properties. Laboratory synthesis is described as hydrothermal or sol-gel processes at elevated temperatures and pressures, with dopants controlling emission color. Environmental and safety considerations are described in-universe as standard mineral handling concerns for fine powders.