|AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from New Hampshire > Quartz var. Smoky Quartz (Dauphiné Law Twinned) with Muscovite Mica
|Quartz var. Smoky Quartz (Dauphiné Law Twinned) with Muscovite Mica
|Moat Mountain, west of North Conway, Carroll County, New Hampshire
|Lustrous transparent smoky quartz crystals, with silvery muscovite mica that interrupted growth on half of the quartz. The smoky quartz crystals have suture patterns on the prism faces indicating twinning following the Dauphiné Law of quartz twinning. Ex. Thomas A. Penney (1934-2019) collection, collected in the 1970s
|For reference only
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