Extremely rare single crystal of this natural Cu-Zn alloy from one of only two known localities worldwide (Mansfeld, Eisleben, Saxony-Anhalt, Germany), the find from this locality still not being published anywhere. Analyzed specimen. — Photo: David Hospital · CC BY-SA 4.0
Danbaite
A rare natural copper-zinc alloy first described in 1982.
Intro adapted from Wikipedia (CC BY-SA).
Danbaite is an IMA-recognized mineral species in the native element class, with the chemical formula CuZn₂.
It crystallizes in the cubic crystal system.
Key properties: Mohs hardness 4.2; specific gravity 7.36; Strong metallic. R: (470) [71.0], (546) 68.5, (589) 67.9, (650) [66.7] luster.
IMA symbol Dba, IMA status: approved, named in 1981.
Found in a platinum-bearing Cu–Ni deposit in a highly altered ultramafic intrusion.
It is found associated with Chromium, pyrrhotite, pentlandite, chalcopyrite, violarite, cubanite, bornite, sphalerite, galena, linnaeite, magnetite, testibiopalladite, sudburyite.
The name is derived from the locality at Danba in China.