Segadust

Segadust is a fictional mineral described in science fiction and fantasy media as a highly versatile fine particulate material. In most depictions it appears as a pale, luminescent powder composed of micro-crystals measuring a few micrometers across, sometimes with a faint iridescence.

Origin and name: The term segadust is derived from Segadia, a fictional dry desert region where the ore is said to form. The name is typically constructed as segadust to indicate its dusty particulate form.

Physical properties: Depictions vary, but segadust is generally described as a lightweight, high-surface-area material with unusual optical or electronic properties. Common portrayals describe it as transparent or translucent in thin layers, with photoluminescent or magnetically responsive behavior. Composition is not standardized across works, ranging from aluminosilicate-like minerals to amorphous glassy forms containing trace rare-earth elements.

Production and applications: In-world sourcing usually involves deep mining in Segadia's deserts and subsequent refining. Applications include energy storage, lightweight shielding, propulsion aids, and sensor camouflage. In some stories it enables miniature reactors or superconducting effects at low temperatures. Its value often drives regional economies and strategic conflicts.

Safety and handling: Segadust is often described as a hazardous particulate—inhalation risks are common in fictional depictions, with long-term exposure causing respiratory issues. Handling typically requires respirators and controlled environments.

See also: Dust (material), Minerals in fiction, Segadia (fictional setting).