Lankstum

Lankstum is a fictional crystalline mineral frequently encountered in science fiction and worldbuilding texts. Described as a lightweight yet exceptionally durable substance, lankstum is reputed to exhibit high thermal stability, strong mechanical strength, and a characteristic iridescent glow.

The name lankstum appears to be a neologism created for speculative works, combining phonetic elements common to science fiction lexicons.

In most depictions, lankstum forms prismatic crystals in igneous or metamorphic rocks. Reported properties include high tensile strength, relatively low density, and efficient energy transfer. It is often described as luminous under ultraviolet or electron-beam excitation, and some sources attribute a variable composition with metallic elements interwoven with silicates or oxides.

In fictional geology, lankstum is found in rare pockets within basaltic or ultramafic rocks on certain planetary bodies. It is typically mined by specialized operations and subjected to careful processing to preserve its luminescence.

Within fiction, lankstum’s properties make it valuable for aerospace alloys, energy storage, and photonics, and it often functions as a plot device to explain advanced technologies or resource-driven conflicts.