Quantitative interpretation on three-dimensional mise-à-la-masse data. A case history from Gairloch, northwest Scotland

Surface and downhole mise-à-la-masse data have been collected around a massive sulphide body in Gairloch, northwest Scotland. Qualitative analysis has led to the location of sub-surface faults dividing the mineralization and to the establishment of continuity of ore between boreholes. In this paper, however, quantitative analysis of the data including the use of a simple interpretation scheme and three-dimensional modelling by the integral equation technique is presented giving rise to a detailed interpretation of the area, which includes estimates of the lateral extents of each of the mineralized blocks.