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

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

DESCRIPTION:	No. 81547
Mineral:	Bournonite (doubly terminated cyclic twinned crystals)
Locality:	Yaogangxian Mine, 32 km southeast of Chenzhou, Hunan, China
Description:	Doubly terminated tabular silver-metallic bournonite crystal with no attached matrix. The bournonite crystals have short striated prism faces around the perimeter and broad termination faces composed of parallel shallow pyramidal faces. Bournonite, PbCuSbS3, is an uncommon lead-copper sulfosalt mineral. Weight: 14.0 grams. Reference: Mineralogical Record v.42#6, Rocks and Minerals v.80#1
Overall Size:	26x21x13 mm
Crystals:	5-15 mm
Archived:	For reference only

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