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Bournonite (cyclic twinned crystals) from Yaogangxian Mine, 32 km southeast of Chenzhou, Hunan, China

 
Bournonite (cyclic twinned crystals) from Yaogangxian Mine, 32 km southeast of Chenzhou, Hunan, China

Bournonite (cyclic twinned crystals) from Yaogangxian Mine, 32 km southeast of Chenzhou, Hunan, China

Bournonite (cyclic twinned crystals) from Yaogangxian Mine, 32 km southeast of Chenzhou, Hunan, China

Bournonite (cyclic twinned crystals) from Yaogangxian Mine, 32 km southeast of Chenzhou, Hunan, China

DESCRIPTION:No. 81548
Mineral:Bournonite (cyclic twinned crystals)
Locality:Yaogangxian Mine, 32 km southeast of Chenzhou, Hunan, China
Description:Lustrous silver-metallic bournonite crystals, repeatedly twinned on the {110} plane, with highly reflective parallel crystal faces on all sides. The bournonite crystals have striated prism faces with basal pinacoid terminations with pyramidal edge faces. Bournonite, PbCuSbS3, is an uncommon lead-copper sulfosalt mineral. Weight: 8.7 grams. Reference: Mineralogical Record v.42#6, Rocks and Minerals v.80#1
Overall Size:23x18x11 mm
Crystals:10-23 mm
Status: Sold - Posted here for reference only
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