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Creevan Burn, CavanacawTyrone
Creevan Burn, Cavanacaw, Co.Tyrone: from Glenfern Farm.
Summary Full report
Site Type: River bank
Site Status: PASSI
District:
Grid Reference: X24043701
Rocks
Rock Type: Pelitic rock
Interest
Minerals: Gold, Quartz
Other interest: hydrothermal vein, fault gouge, shear zone, No Data

Summary of site:

A quartz vein bearing gold, found here in 1985, led to the discovery of a whole series of north/south orientated veins that were later worked. The bedrock is the Mullaghcarn Formation, the youngest of the ancient Dalradian rock formations in the area.

The mineralization is believed to have occurred much later, in the Variscan orogeny, as in the neighbouring Curraghanilt deposit, somewhere between 325 and 315 million years ago. It differs slightly from Curraghanilt, being dominated by lead and zinc rather than copper. Silver ratios are also lower here.


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