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Drws-y-Coed Mine (Drwy-y-Coed Mine), Nantlle Vale, Gwynedd, Wales, UK

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Latitude & Longitude (WGS84): 53° 3' 31'' North , 4° 10' 16'' West
Latitude & Longitude (decimal): 53.05861,-4.17111
UK National Grid Reference:SH545535
Other/historical region names associated with this locality:Caernarvonshire
Other regions containing this locality:Snowdonia National Park, Wales, UK


A very old mine that was reputedly visited by King Edward 1st in 1284. There is a record of Cornish miners working at Drws-y-Coed in 1761 and many miners and "copper ladies" moved here from Parys Mountain in Anglesey during the 1830s as the lodes there became less productive.

Probably at its peak during the period circa 1820-40, the Drws-y-Coed mine remained in production until towards the end of the 19th century. However, by the 1880s output rarely exceeded 200 tons per annum. Attempts to work the mine in the early part of the 20th century were largely unsuccessful.

Although a total output of 13000 tons of ore is recorded, this is thought to be a great underestimate, with the real output possibly about double this figure.

Ref: The Old Copper Mines of Snowdonia, David Bick, 3rd Edition 2003.

Mineral List


12 valid minerals.

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Whiterock
456.5 - 470 Ma
Llanvirn Rocks (Undifferentiated)

Age: Ordovician (456.5 - 470 Ma)

Lithology: Mudstone, siltstone and sandstone

Reference: British Geological Survey. DiGMapGB-625. British Geological Survey ©NERC. [23]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License



This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Braithwaite, R, S, W., (1982) Wroewolfeite in Britain. Mineralogical Record 13(3) 167-170, 174.

 
Mineral and/or Locality  
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