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Derrynoose lead mineArmagh
Derrynoose lead mine, Co.Armagh, June 1997.
Summary Full report
Site Type: Spoil
Site Status: PASSI
District:
Grid Reference: X27963315
Rocks
Interest
Minerals: Galena, Sphalerite
Other interest: hydrothermal vein, No Data

Summary of site:

A spoil heap is now all that remains of this mine. Formerly it worked a series of hydrothermal veins containing both galena (lead sulphide, a common lead ore) and sphalerite (zinc sulphide, a common zinc ore). Hydrothermal deposits result from the flow of hot, metal-rich brine solutions through cavities and lines of weakness in rocks, in this case veins. The veins occur in Silurian sediments, the local bedrock.


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