DescriptionLlynwernog Lead and Silver Mine (geograph 3391527).jpg
English: Llynwernog Lead and Silver Mine. Silver (Ag) has a similar ionic radius to lead (Pb) so silver/lead mines are common. Especially in the Northern Pennines. This is an exploration adit driven in 1906 to hit the galena (PbS) bearing vein. It was a failed venture.
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