ber of alluvial gold occurrences were identified in a variety of geologic environments and many of these were reported in a comprehensive account of Irish gold localities by McArdle et al 1987 In Scotland similar exploration activity carried out both by exploration companies and by the British Geological Survey identified ber of alluvial gold occurrences were identified in a variety of geologic environments and many of these were reported in a comprehensive account of Irish gold localities by McArdle et al 1987 In Scotland similar exploration activity carried out both by exploration companies and by the British Geological Survey identified