Bohlinin

Bohlinin is a fictional mineral used in geoscience education and speculative geology to illustrate mineral description and classification. It is described as a rare aluminosilicate that forms in hydrothermal veins and contains traces of iron and titanium, which influence color and optical properties. The name derives from the Bohlin Range, a fictional locality.

Bohlinin crystallizes in the monoclinic system and typically forms prismatic crystals. It has a vitreous luster, a pale yellow to green hue, and a Mohs hardness of 6.0–6.5. Reported density is about 3.3 g/cm3. In hand specimens it is translucent to transparent.

In projected occurrence, Bohlinin is found in hydrothermal veins within granitic rock, often with quartz, feldspar, and epidote. It is described as forming at low-to-medium metamorphic grades and under moderate temperature conditions.

The approximate empirical composition is given in teaching materials as an aluminosilicate with aluminum and silicon, with minor iron and titanium as trace elements. The mineral is named in reference to the Bohlin Range, and, in educational descriptions, was first described by researchers A. Nilsson and P. Eriksson in 2004. The naming follows standard mineralogical conventions.

Applications and significance: Bohlinin serves as an educational example for mineral description, crystallography, and nomenclature, rather than as a material with current commercial use. Note: Bohlinin is a fictional mineral created for illustrative purposes.