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Bournonite (cyclic twinned crystals) from Yaogangxian Mine, Nanling Mountains, Hunan, China

 
Bournonite (cyclic twinned crystals) from Yaogangxian Mine, Nanling Mountains, Hunan, China

Bournonite (cyclic twinned crystals) from Yaogangxian Mine, Nanling Mountains, Hunan, China

Bournonite (cyclic twinned crystals) from Yaogangxian Mine, Nanling Mountains, Hunan, China

Bournonite (cyclic twinned crystals) from Yaogangxian Mine, Nanling Mountains, Hunan, China

Bournonite (cyclic twinned crystals) from Yaogangxian Mine, Nanling Mountains, Hunan, China

DESCRIPTION:No. 75364
Mineral:Bournonite (cyclic twinned crystals)
Locality:Yaogangxian Mine, Nanling Mountains, Hunan, China
Description:Doubly terminated cyclic-twinned gray-metallic bournonite crystals with striated prism faces and small basal pinacoid terminations modified by secondary pyramidal faces. The bournonite crystal surfaces composed of smaller parallel crystal faces. For locality information see: Mineralogical Record v.42#6, Rocks and Minerals v.80#1
Overall Size:26x23x20 mm
Crystals:26 mm
Status: Sold - Posted here for reference only
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