Osalemine

Osalemine is a fictional mineral species used here in a hypothetical encyclopedia entry to illustrate a mineral description. It is described as a monoclinic phosphate mineral forming in hydrothermal veins within ultramafic rocks. The composition is dominated by aluminum and phosphate groups, with substitutions of calcium, iron, and silicon in solid solutions.

Physical properties: Mohs hardness around 5; color pale green to colorless; luster vitreous; streak white; transparency transparent to translucent; crystal habit tabular to prismatic; cleavage perfect on {010}; density about 3.4–3.6 g/cm3.

Formation and occurrence: Reported from a fictional Osalea Basin; forms under moderate temperatures (200–350°C) and relatively low sulfur fugacity; commonly associated with quartz, magnetite, rutile, and calcite.

Classification and relation: Belongs to phosphate minerals; sometimes grouped with aluminate phosphates in educational taxonomies.

Etymology: Named after the Osalea region in this fictional setting; "osale-" from that place.

Uses and significance: Primarily of interest to collectors and for teaching mineral classification; no recognized economic use.

See also: Phosphate minerals; monoclinic minerals.

References: This article describes a fictional mineral; no real-world citations.