vanemplaanide

Vanemplaanide is a fictional mineral introduced in speculative geology to illustrate mineral description conventions. In the hypothetical taxonomy used here, vanemplaanide is categorized as a silicate-oxide mineral with mixed iron and titanium content. The term is not recognized by real-world mineral nomenclature bodies, and the description below is for illustrative purposes.

The name vanemplaanide is derived from the fictional Vanemplaan region and the surname of the hypothetical discoverer, Dr. M. van Plein. The suffix -ide is customary in mineral naming, while the full name signals its fictional provenance in this explanatory context.

In the imagined description, vanemplaanide forms pale emerald-green to olive crystals, with a vitreous luster and a translucent to transparent appearance in thin crystals. It is proposed to crystallize in a tetragonal system, with a Mohs hardness of 6.0–6.5 and a refractive index around 1.70–1.75. The streak is pale gray. Its cleavage is described as imperfect in one direction, and it can occur as prismatic to tabular crystals. The mineral is typically displayed in low to medium-temperature hydrothermal settings, often with fluid activity.

Within the fictional framework, vanemplaanide forms when iron- and titanium-rich fluids interact with silica-rich host rocks at moderate depths, commonly 3–6 km, in regions with granitoid intrusions. It is often found in association with titanite, magnetite, and garnet, forming in veined systems that record late-stage hydrothermal activity.

The first description appears in the imaginary alpine mining district of Vanemplaan in 1985 by geologist Dr. M. van Plein. Because vanemplaanide is a fictitious mineral, there are no peer-reviewed citations; the entry is designed to demonstrate standard encyclopedic mineral documentation.

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