AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from China > Bournonite (doubly terminated complexly twinned crystals)

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

DESCRIPTION:	No. 81545
Mineral:	Bournonite (doubly terminated complexly twinned crystals)
Locality:	Yaogangxian Mine, 32 km southeast of Chenzhou, Hunan, China
Description:	Large doubly terminated complexly-twinned lustrous silver-metallic bournonite crystals fully crystallized on all faces except one corner where they were attached. The bournonite crystals have striated prism faces with complex parallel termination faces. Bournonite, PbCuSbS3, is an uncommon lead-copper sulfosalt mineral. Weight: 29.1 grams. Reference: Mineralogical Record v.42#6, Rocks and Minerals v.80#1
Overall Size:	26x22x16 mm
Crystals:	5-22 mm
Archived:	For reference only

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