| AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from China > Bournonite (cyclic twinned crystals) with Boulangerite micros |
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| DESCRIPTION: | No. 81541 |
| Mineral: | Bournonite (cyclic twinned crystals) with Boulangerite micros |
| Locality: | Yaogangxian Mine, 32 km southeast of Chenzhou, Hunan, China |
| Description: | Doubly terminated lustrous silver-metallic bournonite crystals with acicular boulangerite microcrystals, repeatedly twinned on the {110} plane, with highly reflective parallel striated prism faces on all sides with pyramidal termination faces. Bournonite, PbCuSbS3, is an uncommon lead-copper sulfosalt mineral. Weight: 45.8 grams. Reference: Mineralogical Record v.42#6, Rocks and Minerals v.80#1 |
| Overall Size: | 36x30x18 mm |
| Crystals: | 8-18 mm |
| Archived: | For reference only |
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