Minerals / Quartz, Aberdaunant. (CWO)

 Quartz, SiO2. Aberdaunant mine, Nr. Llanidloes, Central Wales Orefield. This specimen is included in my collection because it is representative of many similar pieces found on the spoil heaps. There are some well formed crystals, but most of the quartz is irregular and mis-shapen. There is some iron staining on most of the specimen.

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