This is a state-of-the-art geochemical technique that enables prediction of the amount of metal in a prospect

Case study

Before the pre-feasibility study the  resource estimation for the whole mineralized zone was calculated on the basis of surface geochemistry (Figures 1 and 2) to be 108 and 91 tonnes of gold  based on different sampling intervals.

After trenching and drilling gold reserves for the sub-areas 1+2+3 outlined in red (Figure 2) were estimated for the pre-feasibility study to be 32 t Au

Contacts

Figure 2: Gold resources calculated from  sediment   geochemical survey data by resampling the area outlined  in green at a sample interval of 100*40 m
Au - 91 t

Figure 1: Gold resources calculated from sediment geochemical survey of the survey area outlined in blue (12 samples per km2)
Au - 108 t

Pre-drilling   resource   estimation