STRUCTURAL CONTROL OF GOLD MINERALIZATION
Geochemical data have demonstrated that the most mineralized rock is
tonalite. A study of the structures that are likely to trap gold in the
tonalite has been carried out. According to the statistics made by the
Leapfrog software, based on the five core drillings, it is the quartz
veins V2b and fractures filled by sulphides then the veins V2a which
host the highest gold grades in the tonalite, as indicated by the rose
diagram. V2b mineralized strikes between N070 to N090 while V2a
mineralized veins strikes N020 to N035. The average dip of all veins is
44° towards NW (Figure 25, 26 and 27). We were able to represent the
different mineralized veins in the tonalite (Figure 28). This confirms
that, it is the V2b quartz veins and then the V2a veins that carry the
highest grades.