AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from Colorado > Quartz var. Smoky Quartz (Dauphiné twin) |
DESCRIPTION: | No. 80879 |
Mineral: | Quartz var. Smoky Quartz (Dauphiné twin) |
Locality: | Echo Chamber Pocket, Dreamtime Claim, Crystal Peak area, 6.5 km northeast of Lake George, Teller County, Colorado |
Description: | Two tapered lustrous transparent smoky quartz crystals with distinct twin planes visible on the prism faces, and adjacent S-faces {2111}, indicating the quartz is twinned following the Dauphiné Law. The rear contacted the cavity wall. Collected March 2017 |
Overall Size: | 9x3.5x3.5 cm |
Crystals: | 70-90 mm |
Archived: | For reference only |
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