|AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from Montana > Quartz var. Smoky Quartz (Dauphiné Law twin)
|Quartz var. Smoky Quartz (Dauphiné Law twin)
|Crystal Park, Beaverhead County, Montana
|Transparent medium-smoky quartz crystal with slightly striated crystal faces that give the quartz a satin luster. Subtle luster patterns on the faces indicate the crystal is twinned following the Dauphine Law of quartz twinning.
|For reference only
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