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Drakelands Mine (Hemerdon Mine; Hemerdon Bal Mine; Hemerdon Ball Mine), Plympton, Tavistock District, Devon, England, UK

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Latitude & Longitude (WGS84): 50° 24' 26'' North , 4° 0' 35'' West
Latitude & Longitude (decimal): 50.40749,-4.00985
UK National Grid Reference:SX572584
Other regions containing this locality:Devon and Cornwall metalliferous mining district, England, UK

An open-cast tungsten mine near Plymouth in Devon - this locality is famed for its high-quality scorodite (among the best in Europe) with ferberite and cassiterite. The deposit was sampled in 1982 by AMAX but problems were encountered due to the difficulty of separating the clays from the ore.

On 4th December 2007, it was announced that an Australian company, Wolf Minerals LLC, had acquired the rights to mine this deposit, and current plans are to reopen the site as a full-scale open cast metal mine for tungsten and tin, producing up to 3000 tonnes of tungsten metal per year.

The mine restarted production in August 2015 with the first tungsten concentrate in 45 years leaving the deposit.

The original name for the workings was "Hemerdon Bal", this was corrupted over time (possibly due to a mis-spelling on Ordnance Survey maps that remains to this day) to "Hemerdon Ball".

Mineral List

17 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

358.9 - 419.2 Ma
Unnamed Igneous Intrusion, Devonian

Age: Devonian (358.9 - 419.2 Ma)

Lithology: Felsic-rock

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.


Mills, S.J., Christy, A.G., Rumsey, M.S., Spratt, J. (2016) The crystal chemistry of elsmoreite from the Hemerdon (Drakelands) mine, UK: hydrokenoelsmoreite-3C and hydrokenoelsmoreite-6R. Mineralogical Magazine, 80, 1195-1203.

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