Minerals / Galena, Eaglebrook. (CWO)

Galena, PbS, Lead sulphide. Eaglebrook ( Nantycagl ) mine, Nant-y-moch reservoir west Wales. Small platelets of galena grown on a thin bed of extremely fine druzy quartz.The bed continues under the small piece of the remaining attached rock indicating that this was once a very narrow vein within the rock.

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