ikkefissil

Ikkefissil is a fictional mineral species that appears primarily in speculative geology, science fiction, and related world-building discussions. It is not recognized by scientific authorities, and there are no peer-reviewed reports describing its existence or properties.

In commonly circulated fictional portrayals, ikkefissil is described as a blue-green silicate mineral with a monoclinic crystal habit, a vitreous to resinous luster, and a range from translucent to opaque. It is said to crystallize from high-temperature fluids in tectonically active regions, often forming in hydrothermal veins or altered ultramafic rocks. Reported physical properties vary by author but are often placed in the range of Mohs hardness around 6.5 to 7, a specific gravity near 3.0 to 3.4, and cleavage that is described as perfect along a single plane in some narratives.

The name and concept of ikkefissil appear in online forums, fan fiction, and geoscience-themed puzzles rather than formal scientific literature. Because it is a construct of fiction, there is no official type locality, no museum specimen, and no standardized property set. Consequently, values and characteristics attributed to ikkefissil can differ between sources.

In fiction and world-building contexts, ikkefissil may be used as a plot element or world-building detail to convey rarity, special optical or magnetic properties, or to serve as a catalyst for geological or technomagical phenomena. It functions similarly to other fictional minerals that provide a tangible anchor for narrative science.

See also: fictional minerals, geofiction, world-building.