Bournonite (''cogwheel'')

Yaogangxian Mine, Yizhang Co., Chenzhou Prefecture, Hunan, China
Miniature, 3.7 x 2.5 x 1.6 cm
Start Time: 09/30/2021 8:00:00 pm (CDT)
End Time: 10/07/2021 6:45:00 pm (CDT)
Auction Closed
Winning Bid: $71

Item Description

This mine has become one of the foremost producers of fine quality Bournonite specimens in the world. Superb Bournonites are only found in a handful of worldwide localities, and the specimens from the Yaogangxian mine are among the best extant. This piece features a fairly sharp, well-formed, silvery-grey color, metallic, prismatic "cogwheel"-shaped crystal of Bournonite free of matrix. There are some rough spots on the piece, so it's not 100% perfect, but it's still a very good sized "cogwheel" on a worldwide scale. In my experience Bournonite crystals of this size are not common from any locality, and this is still a decent example of the Yaogangxian specimens.

Did You Know We Offer Custom Bases?

Learn More

Bidding History

Bid Amount Bid Time
$71 10/07/2021 6:39:53 pm (CDT)
$69 10/07/2021 6:39:53 pm (CDT)
$61 10/07/2021 6:33:17 pm (CDT)
$51 10/07/2021 6:17:22 pm (CDT)
$50 10/07/2021 6:17:22 pm (CDT)
$40 10/07/2021 6:17:11 pm (CDT)
$35 10/07/2021 6:17:11 pm (CDT)
$30 10/07/2021 3:35:43 pm (CDT)
$25 10/07/2021 3:35:43 pm (CDT)
$15 10/04/2021 7:58:40 pm (CDT)
$10 10/03/2021 6:10:17 am (CDT)