| AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from Bolivia > Bournonite on Pyrite |
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| DESCRIPTION: | No. 62992 |
| Mineral: | Bournonite on Pyrite |
| Locality: | Viboras Mine, Machacamarca District, Cornelio Saavedra Province, Bolivia |
| Description: | Lustrous dark gray-metallic bournonite crystals with remnants of yellow-metallic pyrite on the bottom where they were attached. The bournonite crystals are repeatedly twinned resulting in the formation known as Cogwheel Habit. |
| Overall Size: | 17x13x12 mm |
| Crystals: | 5-9 mm |
| Archived: | For reference only |
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