sarnastele

Sarnastele is a fictional mineral described in a hypothetical geoscience setting. It is described as a transparent to translucent silicate-phosphate mineral with a distinctive blue-green hue and a glassy luster. In the imagined model, sarnastele forms in hydrothermal veins at moderate temperatures and low to medium pressures, typically in feldspar-rich host rocks. Crystals are commonly monoclinic and may appear prismatic or fibrous, often found as aggregates up to several centimeters in size. The mineral is said to have a Mohs hardness around 6.5 to 7, a refractive index near 1.62, and noticeable pleochroism, shifting from teal to blue when viewed from different angles. Its chemistry is described as a complex silicate-phosphate with trace iron and vanadium, giving the color variation and subtle internal glow in certain lighting conditions.

In the fictional history, sarnastele was first described in modern mineral literature by the fictional geologist Elara Kivisaar in 2147, named after the nearby Sarnastele Range in the northern archipelago. The locality is said to give the mineral its characteristic seam-hosted distribution and occasional binary twin crystals. In practical terms within the imagined world, sarnastele is valued for its color, clarity, and potential piezoelectric or optical properties, making it of interest to jewelers and researchers alike. Environmental and ethical notes in the story-world emphasize careful mining practices to protect nearby reef ecosystems and indigenous cultural sites.

Note: This article describes a fictional mineral created for illustrative purposes and is not a description of a real-world material.