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Gwynfynydd Gold Mine

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The Gwynfynydd Gold Mine has historically produced around 45,000 ounces of gold at a mining grade of 15 grams/tonne. Commercial operations at Gwynfynydd ceased in 1999 when the gold price was only around US$300 per ounce.

Gwynfynydd shares many of the same geological and mineralogical characteristics of Clogau, meaning that Alba can roll out the same modern exploration and development methods as have been successfully deployed at Clogau-St David’s.

At Gwynfynydd, production last took place between 1991 and 1999, when 10,000 tonnes of ore was extracted annually from a total estimated resource base of 180,000 tonnes. All the 20th Century production came from the Chidlaw Link Zone, which varies in thickness from one to eight metres.

The quartz vein (or lode) at Gwynfynydd was discovered in 1860 and started commercial development in 1887. The Gwynfynydd Mine has produced around 45,000 ounces (around 1.3 tonnes) of gold since inception with a historical mining grade of 15 grams of gold per tonne. Gwynfynydd became one of the most important mines in the Dolgellau Gold Belt and, together with the Clogau-St David’s Gold Mine, contributed some 95% of the total gold output from the area.

The Gwynfynydd Gold Mine is located close to the town of Ganllwyd in the county of Gwynedd, north Wales. Gwynfynydd lies within the Dolgellau Gold Belt, a known geological formation which forms an arc approximately 26 km long by 6 km wide around the south-eastern and eastern margins of the Harlech Dome.

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