Carrollite, Chalcopyrite
Sazare mine, Shikokuchuo City, Ehime Prefecture, Japan
An extremely rare carrollite specimen from a Japanese "Kieslager" (a.k.a. "Besshi-type deposit"). A hexagonal section of euhedral crystal to 7mm is embedded in massive chalcopyrite. Collected from Kinsen orebody.
In "Kieslager", carrollite crystals like this occur in some kind of "branched ore" (called "hanekomi" in Japanese term), which is rich ...