Report of a meeting of the Mineral Deposits Studies Group held on 14—15 December 1987, at the University of Newcastle upon Tyne. The meeting included a thematic session on the use of stable isotopes in ore genetic studies.
In order to take advantage of the location, the annual meeting started with an excursion to visit sites of dolerite-associated mineralization within the North Pennine orefield, led by B. Young of the British Geological Survey. Thirty participants braved the seasonal weather for a most instructive day, and were joined later by a further seventy participants for the subsequent indoor activities of the conference.
Details of the thematic session on Stable Isotopes in Ore Genetic Studies have already been given as part of the thematic set of papers published elsewhere in this issue. Other contributions covered a variety of topics. P. R. Ineson (University of Sheffield) reminded the audience of the importance of industrial minerals in his paper on sands which stressed the construction industry's need for good quality, salt-free, sand. Returning to base metals, D. A. C. Manning & E. 1. C. Rae (University of Newcastle upon Tyne) reported the results of experiments to determine the behaviour of Pb-rich feldspars during dissolution, which demonstrate that clastic feldspars within sediments are a significant potential source for Pb. The role of diagenetic processes in ore formation was examined further by M. C. Akhurst (University of Newcastle upon Tyne), who was able to place episodes of mineralization into the diagenetic sequence at Tynagh, and