Maikainite
Maikainite is an IMA-recognized mineral species in the sulfide class, with the chemical formula Cu₁₀Fe₃MoGe₃S₁₆.
It crystallizes in the cubic crystal system. It is a member of the Sphalerite, Germanite structural group.
Key properties: specific gravity 4.54; Metallic luster.
IMA symbol Mai, IMA status: approved, named in 1992.
Found in a gold-bearing, base-metal, massive-sulfide deposit (Maikain); in a germanium- bearing, base-metal, massive-sulfide deposit (Tsumeb).
It is found associated with Germanite, ovamboite, germanocolusite, sphalerite, bornite, tennantite, gallite, galena, barite (Maikain); ovamboite, germanite and germanocolusite (Tsumeb).
The name is derived from the locality, the Maikain deposit, that produced the first specimens studied.