The regional scale ‘geo-characteristics’ of Finnish metallic ore deposits are examined by using the existing large
geochemical and geophysical databases of Geological Survey of Finland. For the study, lithogeochemical and geophysical
grid values were interpolated at the location of 612 ore deposits. The parameters examined were major
geochemical elements, gravity, airborne magnetic and electromagnetic data and radiometric U, Th and K radiation.
Additionally, topographic lineament density was used to estimate variations in rock fractures and faulting.
The grid values interpolated to deposit locations were further compared with threshold values representing the
modal, ‘most common’ value for each grid.
The comparison indicated significant and characteristic differences in parameters between interpolated grid
values at ore locations and the threshold values of the grids. The significance of these variations was also statistically
verified. The findings included the following: