Brezinaite
A rare chromium sulfide found in meteorites, first recognized in the Tucson Ring meteorite in 1969.
Intro adapted from Wikipedia (CC BY-SA).
Brezinaite is an IMA-recognized mineral species in the sulfide class, with the chemical formula Cr₃S₄.
It crystallizes in the monoclinic crystal system (space group I2/m). It is a member of the Wilkmanite structural group.
Key properties: specific gravity 4.12.
IMA symbol Bzn, IMA status: approved, named in 1969.
Found in the metal matrix and contiguous to silicate inclusions (Tucson iron meteorite).
It is found associated with Forsterite, enstatite, aluminous diopside, anorthite, feldspathic glass, kamacite, taenite, schreibersite (Tucson iron meteorite); troilite, carlsbergite.
In honor of Aristides Brezina (1848–1909), past Director of the Mineralogy-Petrology Section of the Natural History Museum, Vienna, Austria.