|AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from Montana > Quartz var. Smoky Quartz (Dauphiné Law Twins)
|Quartz var. Smoky Quartz (Dauphiné Law Twins)
|Butte District, Silver Bow County, Montana
|Lustrous transparent smoky quartz crystal with many complex suture patterns on the prism faces indicating the smoky quartz crystal is twinned following the Dauphiné Law of quartz twinning. Note the impressions on the faces from mica crystals. Collected ca. 1985
|For reference only
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