revisionsien

Revisionsien is a fictional mineral described in a geoscience context as a layered silicate with a serpentine-like habit. The name blends the concept of scientific revision with the common mineral suffix -ien, and the term is used in modeling hydration and stability in crystalline systems.

Classification and structure: It is said to crystallize in the monoclinic system and to have a sheet silicate (phyllosilicate) structure with alternating tetrahedral and octahedral sheets. The approximate formula is (Fe2+, Mg2+)3Si2O5(OH)4, with minor substitution by Al3+ and Cr3+. Its interlayer region can accommodate small amounts of water, enabling reversible hydration and dehydroxylation under temperature or pressure changes.

Occurrence and formation: In the fictional setting, revisionsien forms by low-temperature hydrothermal alteration of basalt and ultramafic rocks in zones of fluid-rock interaction, commonly alongside serpentine, chlorite, and magnetite. It is imagined to occur in pockets within metavolcanic terrains of the Norda region.

Physical properties: Color ranges from greenish-gray to olive; luster is vitreous to pearly; Mohs hardness about 4.5–5.5; density around 2.9–3.1 g/cm3; transparent to translucent.

Significance and uses: In the narrative, revisionsien is studied as a model system for hydration dynamics and phase stability in low-temperature metamorphism. It serves as a marker mineral for tracking hydrothermal revision events in rocks and as an educational example of how mineral properties respond to environmental change.

Discovery and naming: The concept was introduced in 2025 by fictional researchers in the open-access journal Canon Geology (Fictional).

See also: Serpentine group; Phyllosilicates; Mineralogy.

Note: Revisionsien is a fictional mineral created for illustrative purposes.