AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from England > Fluorite (interpenetrant-twinned crystals) with Quartz

Fluorite (interpenetrant-twinned crystals) with Quartz from Heights Mine, Westgate, Weardale District, County Durham, England

Photo below under shortwave ultraviolet illumination:

DESCRIPTION:	No. 72633
Mineral:	Fluorite (interpenetrant-twinned crystals) with Quartz
Locality:	Heights Mine, Westgate, Weardale District, County Durham, England
Description:	Lustrous transparent pale-purple fluorite crystals to 13 mm with scattered colorless quartz crystals to 1 mm on the surfaces. The fluorite crystals are cubic form, interpenetrant-twinned, and fluoresce violet under SW UV illumination. Collected ca. 1950
Overall Size:	9.5x6.5x5.5 cm
Crystals:	0.5-13.0 mm
Archived:	For reference only

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