|AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from New Hampshire > Quartz var. Smoky Quartz (Dauphiné Law Twin)
|Quartz var. Smoky Quartz (Dauphiné Law Twin)
|Hurricane Mountain, east of Intervale, Carroll County, New Hampshire
|Transparent smoky quartz crystal with no matrix attached. The smoky quartz crystal is twinned following the Dauphine Law of quartz twinning, with rare crystal faces and twin suture lines visible on the prism faces. Ex. Thomas A. Penney (1934-2019) collection #84, collected in the 1960s-70s
|For reference only
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