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Topographical mineralogy, the conservation of minerals and the preservation of mineralogical sites

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Report on Dig at Penberthy Croft

14th March 2023 By Mary Starkey

The Russell Society carried out an excavation of the mine dumps at Penberthy Croft Mine over two days in July 2021 to ascertain the state of the minerals within the dumps and to enhance the mineralogical knowledge of the complex suite of minerals from this site.

A series of twelve trenches were dug using an excavator to a depth of approx. 1-1.5m and a comprehensive search made of the material to identify any minerals exposed. Conditions within the dump were noted as it is well known that deterioration of minerals occurs where sulphides are present due to acid leaching.

A full scientific report on the results of the excavation including the minerals that were found can now be found in the members area of the website.

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