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

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

DESCRIPTION:	No. 81546
Mineral:	Bournonite (doubly terminated twinned crystals)
Locality:	Yaogangxian Mine, 32 km southeast of Chenzhou, Hunan, China
Description:	Doubly terminated lustrous silver-metallic bournonite crystals fully crystallized on all faces with no apparent attachment point. The bournonite crystals have striated prism faces due to twinning with complex terminations composed of parallel faces. Bournonite, PbCuSbS3, is an uncommon lead-copper sulfosalt mineral. Weight: 19.3 grams. Reference: Mineralogical Record v.42#6, Rocks and Minerals v.80#1
Overall Size:	31x21x11 mm
Crystals:	7-31 mm
Archived:	For reference only

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