| 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. 63177 |
| Mineral: | Quartz var. Smoky Quartz (Dauphiné-law twins) on Microcline |
| Locality: | Moat Mountain, west of North Conway, Carroll County, New Hampshire |
| Description: | Lustrous transparent medium-smoky quartz crystals to 24 mm on brown microcline crystals to 4 mm. The smoky quartz crystals are twinned following the Dauphiné Law of quartz twinning, as indicated by S-faces face {2111} on adjacent comers of each crystal. Ex. Thomas A. Penney (1934-2019) collection, collected in the 1960s-70s. |
| Overall Size: | 7.5x6.5x5 cm |
| Crystals: | 2-24 mm |
| Archived: | For reference only |
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