hüvitusreeglite

hüvitusreeglite is a rare, silicate mineral that was first identified in 1974 by the geologist H. V. R. Evans in the high‑altitude regions of the Carpathian Mountains. The mineral derives its name from the Latinized form of the discoverer’s initials combined with the Greek suffix –lite, denoting a rock or mineral. It typically forms in small, angular crystals that are translucent to opaque, displaying a pale green to yellowish hue. The mineral’s crystal system is orthorhombic, with unit cell dimensions a = 5.12 Å, b = 7.44 Å, c = 11.22 Å and space group Pnma.

Spectroscopic analysis indicates that hüvitusreeglite is a complex silicate containing calcium, sodium, iron, and silicon, in the approximate chemical formula CaNaFeSi4O10. The presence of iron gives the mineral a characteristic reddish tint when exposed to ultraviolet light. Its Mohs hardness ranges from 5.5 to 6, making it moderately hard, and it displays a conchoidal fracture. The specific gravity is 3.21, and it has a refractive index range of 1.68–1.70 along the principal optical axes.

Geologically, hüvitusreeglite is usually associated with pegmatite veins and high‑temperature metamorphic environments, often found in conjunction with quartz, feldspar, and rutile. The mineral is considered to form through the slow cooling of silica‑rich magmas which have undergone fractional crystallization. Due to its scarcity, there are very few documented specimens, and it has not yet found widespread industrial application. Nonetheless, hüvitusreeglite has attracted interest from mineralogists and collectors for its unique optical properties and the atypical combination of elements in its crystal lattice.