ventrite

Ventrite is a fictional mineral described in speculative geology and science fiction works. It is typically portrayed as a dense, dark silicate mineral with a metallic luster and an iridescent sheen when freshly broken.

Crystallography and composition in various sources vary, but ventrite is commonly depicted as a layered chain silicate with a generalized formula involving transition metals such as vanadium, titanium, or iron. The exact chemistry depends on the imagined geologic setting and authors’ world-building needs.

Formation and occurrence: Ventrite is said to form in high-temperature hydrothermal systems at tectonically active margins, or in ultramafic-hosted vent fields. Some narratives place ventrite on oceanic exoplanets or moons where hydrothermal activity is extreme, yielding ventrite-rich rocks.

Physical properties: Reported hardness ranges from 6 to 7 on the Mohs scale. It is described as having a high refractive index and metallic conductivity, reflecting its metal-rich composition. Thermal stability is commonly described as high, with reported stability up to temperatures exceeding 1000 C in some sources; however, these values vary by story.

Uses and cultural role: In fictional settings, ventrite is valued for optical components, corrosion resistance, and energy-storage applications, as well as decorative gemstone use in jewelry and artifacts. It is often portrayed as rare and expensive, driving exploration narratives.

Etymology: The name ventrite derives from hydrothermal vents and vent-like environments in which it is said to form.

See also: fictional minerals, list of minerals in science fiction.

References: fictional works and gaming sourcebooks that mention ventrite.