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Mynydd Nodol Mine (Manganese Royal Mine), Mynydd Nodol, Llanycil, Gwynedd, Wales, UK

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Latitude & Longitude (WGS84): 52° 56' 19'' North , 3° 41' 47'' West
Latitude & Longitude (decimal): 52.93866,-3.69652
UK National Grid Reference:SH860393
Other/historical region names associated with this locality:Merionethshire
Other regions containing this locality:Snowdonia National Park, Wales, UK

Small and unsuccessful manganese mine high on the hill of Mynydd Nodol.

First recorded output was in 1867 by the Gt. Northern Manganese Mine Company Ltd. A further 50 tons of ore was raised but not sold in 1867, with the the mine then ceasing work till 1885-86 when it was again briefly operated. A further working in 1906 raised 2 tons of ore. Whilst not worked during the period 1887-91, it was owned by one C Herbert Stokes under the name of Manganese Royal.

Probably no more than a couple of hundred tons of ore were raised in total.

Hollandite and other manganese oxides form botryoidal crusts and velvety acicular, metallic dark grey crystals lining cavities within botryoidal manganese ore have also been shown to be hollandite (T.F. Cotterell, National Museum of Wales, unpublished data).

Mineral List

2 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

443.8 - 485.4 Ma
Unnamed Extrusive Rocks, Ordovician

Age: Ordovician (443.8 - 485.4 Ma)

Lithology: Felsic tuff

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

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