Geological exploration for
new mining ventures involves drilling campaigns, an expensive activity that maytake significant time, with no guarantee of financial success.
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| Small-Scale Mining |
The literature review
indicated that the average cost of drilling may reach over US $100 per meter
drilled, and that the use of Geophysics can reduce by 30% to 50% the number of
negative drill holes (holes that does not intercept the mineral ore body), thus
reducing time and cost of mineral exploration. This paper shows how the
application of Geophysics in two small-scale mining operations, a limestone and
manganese mine, resulted in reduced exploration time with satisfactory results
for the companies. In the limestone mine, Geophysics allowed the updating of
the geological model. In the manganese mine, it contributed to the generation
of a preliminary geological model for the deposit. In both cases, there was a
significant reduction of the time spent on exploration.
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