A REPORT ON HAY GILL MINE, CALDBECK FELLS, CUMBRIA

摘要

The spoil heaps of Hay Gill Mine in the Caldbeck Fells, Cumbria have long been known to be somewhat barren of mineralisation. This report summarises the findings of a visit made in 2010, combined with observations on material in the Natural History Museum, London (NHM) and private collections. Primary mineralisation consisted of quartz, probable ankerite and lesser amounts of baryte and dolomite with pyrite, chalcopyrite and galena as the main sulphides. Oxidation has given rise to minor amounts of a small number of supergene species including goethite, malachite and 'chrysocolla'. The Kingsbury Collection in the NHM contains a mixture of highly improbable species such as atacamite, with others such as calcite and malachite which could be genuine.