SUPPORT US. If is important to you, click here to donate to our Fall 2019 fundraiser!
Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsBooks & Magazines
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryMineral Photography

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

This page is currently not sponsored. Click here to sponsor this page.
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

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, 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.


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

Mineral and/or Locality is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Public Relations by Blytheweigh.
Copyright © and the Hudson Institute of Mineralogy 1993-2019, except where stated. Most political location boundaries are © OpenStreetMap contributors. relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: October 17, 2019 13:51:42 Page generated: October 15, 2017 17:19:40
Go to top of page