Rose brown to bronze/golden metallic crystal aggregates of the extremely rare Au-Te-Cu interalloy mineral bogdanovite from Bisbee (Warren District, Mule Mountains, Cochise County, Arizona, United States of America), one of the few known localities worldwide. Ex Vandenbroucke Museum collection from Waregem, Belgium. — Photo: David Hospital · CC BY-SA 4.0
Bogdanovite
Bogdanovite is an IMA-recognized mineral species in the sulfide class, with the chemical formula (Au,Te,Pb)₃(Cu,Fe).
It crystallizes in the cubic crystal system (space group Pm-3m). It is a member of the Auricupride structural group.
Key properties: Semimetallic. R1 –R2: (400) —, (420) 11.8–15.8, (440) 10.5–15.2, (460) 9.2–14.8, (480) 8.0–14.8, (500) 6.9–16.9 luster.
IMA symbol Bog, IMA status: approved, named in 1978.
Found in the oxidation zone of Au–Te deposits.
It is found associated with Gold, bilibinskite, bezsmertnovite, belyakinite, tellurides of Fe, Cu, Pb (Aginsk deposit, Russia).
The name refers to Soviet geologist Aleksei Alekseevich Bogdanov (1907–1971), Moscow University, Moscow, Russia.