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Pant-y-Gaseg Mine, Amlwch, Isle of Anglesey, Wales, UK

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Latitude & Longitude (WGS84): 53° 25' 23'' North , 4° 23' 24'' West
Latitude & Longitude (decimal): 53.42309,-4.39011
UK National Grid Reference:SH412945
Other/historical region names associated with this locality:Gwynedd;

Ref.: (in part): Min.Rec.: 20(5): 395.

A trial adit of 662 feet that was driven for copper at Pant Y Gaseg just west of Bull bay in 1859. Around 1872 a second attempt was made, with a small shaft being sunk on the ridge.

A report in the Mining Journal of Sept 1872 notes that "....The copper is of the same description as Mona mine. We also saw some of the beautiful umber and ocrhe taken out in our presence. We were amazed at the Kaolinite [dickite]. It is our impression that this will be a great mine very shortly".

Altghough the Panty-gaseg Copper Mining Company issued 40 shares at £250 pounds each in 1872, the company was disolved in 1879. The area was operated again by another company called the New Cambrain Syndicate from 1906 to 1907.

Mineral List

6 valid minerals. 1 (TL) - type locality of 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

485.4 - 541 Ma
Unnamed Extrusive Rocks, Cambrian

Age: Cambrian (485.4 - 541 Ma)

Lithology: Felsic tuff

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

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

This page contains all mineral locality references listed on 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 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.
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