| AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from Montana > Quartz, Chalcocite, Pyrite |
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| DESCRIPTION: | No. 19843 |
| Mineral: | Quartz, Chalcocite, Pyrite |
| Locality: | Butte Mining District, Summit Valley, Silver Bow County, Montana |
| Description: | Rounded formation of white quartz crystals up to 12 mm long with brassy pyrite crystals up to 9 mm and platy aggregates of dark chalcocite. Very clean. See special Butte issue of Mineralogical Record, Jan.-Feb., 2002. |
| Overall Size: | 6x4x3 cm |
| Crystals: | 3-12 mm |
| Archived: | For reference only |
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