| AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from New Hampshire > Quartz var. Smoky Quartz (Dauphiné-law twins) on Microcline |
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| DESCRIPTION: | No. 70575 |
| Mineral: | Quartz var. Smoky Quartz (Dauphiné-law twins) on Microcline |
| Locality: | Moat Mountain, west of North Conway, Carroll County, New Hampshire |
| Description: | Many transparent medium-smoky quartz crystals to 28 mm on a rounded knob of white microcline crystals to 5 mm. The smoky quartz crystals are twinned following the Dauphiné Law of quartz twinning, as indicated by S-faces face {2111} on adjacent comers. Ex. Thomas A. Penney (1934-2019) collection, collected in the 1960s-70s |
| Overall Size: | 9x6x4 cm |
| Crystals: | 1-28 mm |
| Archived: | For reference only |
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