Tilossan

Tilossan is a fictional mineral commonly described in speculative fiction and worldbuilding. It is valued for its luminescence, chemical stability, and potential industrial applications within the settings where it appears.

In fictional geology, Tilossan is said to form in hydrothermal veins within ultramafic rock, under moderate depths and temperatures. Crystals are prismatic with a color range from azure to emerald, and they frequently exhibit a faint bioluminescent glow in low light.

Physical properties commonly attributed to Tilossan include hardness around 6 on the Mohs scale, a specific gravity near 3.3, and transparency from transparent to translucent. It is described as chemically inert under ambient conditions and as having a distinctive refractive index that gives it a strong optical brilliance when cut.

Uses and economics: In fictional economies, Tilossan serves as a key component in high-efficiency photovoltaic cells, phosphors for lighting, and as a gemstone for jewelry. Its thermal stability and resistance to corrosion make it attractive for certain high-temperature electronics. Synthetically produced Tilossan is used in laboratories and for industrial research.

Etymology and cultural notes: The name Tilossan is typically linked to a fictional region or culture named Tilossa. References to Tilossan appear in literature, games, and worldbuilding resources as a marker of technological progress rather than a real mineral. This entry treats Tilossan as a hypothetical concept unless later clarified as real.