Minerals / Galena, Pen y Gaer hill, Llanidloes. (CWO)

Galena, Lead sulphide, PbS. Pen y Gaer hill, Llanidloes, Central Wales Orefield. This specimen was obtained from a very small trial, not known as a mine. It is about 80% galena with the rest being quartz. The galena is very finely cleaved and is better observed under a microscope. The quartz is a very fine aggregate intermixed with galena

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