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

Bournonite (complexly twinned crystals) with Boulangerite micros from Yaogangxian Mine, 32 km southeast of Chenzhou, Hunan, China

DESCRIPTION:	No. 81536
Mineral:	Bournonite (complexly twinned crystals) with Boulangerite micros
Locality:	Yaogangxian Mine, 32 km southeast of Chenzhou, Hunan, China
Description:	Parallel complexly twinned lustrous silver-metallic bournonite crystals fully crystallized on all faces with no attachment point. A late-growth generation of acicular dark metallic boulangerite microcrystals are on the surfaces of the bournonite crystals Bournonite, PbCuSbS3, is an uncommon lead-copper sulfosalt mineral. Weight: 26.5 grams. Reference: Mineralogical Record v.42#6, Rocks and Minerals v.80#1
Overall Size:	35x28x16 mm
Crystals:	micro-32 mm
Archived:	For reference only

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