Epithermal gold-silver deposits occur in young
volcanic terrains where post-mineral cover
commonly impedes the search for mineralisation.
At the Togi Project in Honshu, Japan, a complex
mineralised system is largely covered by post
mineral volcaniclastics. A combination of high
resolution electrical resistivity surveying and
detailed airphoto interpretation has, with close
geological control, enabled synthesis of
structural and alteration characteristics of the
Togi geothermal system, in turn permitting
ranking of the prospects for drill testing.