Bill Bagley Minerals

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Bill Bagley Rocks and Minerals

Minerals / Marcasite / Quartz, Bryn y Rafr. (CWO)

Marcasite,FeS2, and Quartz,SiO2. Bryn y Rafr mine, west Wales. Country rock with quartz and marcasite content. The marcasite has suffered from "pyrite decay", breaking down into sulphuric acid and hydrous iron sulphate, the light coloured deposit on the surface.

Marcasite / Quartz, Bryn y Rafr. (CWO) Bill Bagley Rocks and Minerals



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