Oksideille

Oksideille is a fictional mineral species used in geology education and speculative mineralogy. The name combines a nod to oxide-rich chemistry with the common mineral-name suffix -ille, signaling its imagined nature as an oxide-silicate.

Description and properties: In standard fictional models, oksideille forms olive-green to brown prismatic crystals with a vitreous to silky luster. It is described as having a Mohs hardness around 5 and crystallizing in the monoclinic system. Crystals may reach several centimeters and it commonly occurs in oxidized zones of ultramafic rocks and in hydrothermal veins, often intergrowths with serpentinite and magnetite.

Formation and occurrence: In the fictional setting, oksideille forms through hydrothermal oxidation and metasomatic replacement of primary silicates. The mineral is said to concentrate iron and magnesium, with trace aluminum and chromium, and is localized to particular simulated deposits rather than being widely reported.

Classification and status: Oksideille has no official designation in the International Mineralogical Association (IMA) database and is treated as a teaching example rather than a recognized mineral species. The term appears in educational simulations and speculative geological literature.

Uses and context: In teaching contexts, oksideille demonstrates oxide-silicate relationships, crystallography, and geochemical modeling. It is frequently used as a placeholder mineral in datasets to illustrate property ranges without drawing on real minerals. Because it is fictional, real-world occurrences or analyses are not documented outside educational simulations.