AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from Colorado > Quartz var. Smoky Quartz (Dauphiné Law twinned)

Quartz var. Smoky Quartz (Dauphiné Law twinned) from Devil's Head, Rampart Range, 25 km southwest of Castle Rock, Douglas County, Colorado

DESCRIPTION:	No. 76372
Mineral:	Quartz var. Smoky Quartz (Dauphiné Law twinned)
Locality:	Devil's Head, Rampart Range, 25 km southwest of Castle Rock, Douglas County, Colorado
Description:	Very large lustrous transparent-to-translucent smoky quartz crystals with complex suture patterns on the prism faces, indicating twinning following the Dauphiné Law of quartz twinning. A smaller incomplete smoky quartz crystal intersected one edge.
Overall Size:	14x8x3.5 cm
Crystals:	40-140 mm
Archived:	For reference only

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