Styldrift II exploration
Styldrift II, which lies within the BRPM JV resource boundary and to the east of the current Styldrift I expansion project, makes up approximately 36% (129Mt) of the total BRPM JV resource. The resource currently comprises 58Mt Merensky at an average grade of 7.81g/t 4E over a resource width of 104cm and 71Mt UG2 at an average grade of 5.39g/t 4E over a resource width of 120cm. The resource depth varies between 820m and 1 500m with a consistent north-west strike and dipping at an average dip of 90.
Unique to the Styldrift II resource area is that it is almost exclusively underlain by the Swartklip facies resulting in less variability in mineralised envelope width, improved lateral continuity and a lower incidence of potholing and faulting when compared to the predominant Rustenburg facies found on Styldrift I and BRPM.
The size, grade, relative shallow depth and unique resource characteristics of the Styldrift II ore body therefore represent a significant investment opportunity for RBPlat and its shareholders. To this end RBPlat embarked on a detailed study and exploration drilling programme in 2010. The study programme is currently at pre-feasibility stage. A key focus of the pre-feasibility study has been the incorporation of technology and mechanisation into the overall study philosophy and mine design.
To date we have completed a total of 98 primary exploration holes equating to 125 000m of drilling (including deflections), yielding 350 Merensky intersections and 307 UG2 intersections. A good correlation between actual intersections and geological modelling has been observed. Resource optimisation during 2015 will include the updating of the 3D seismic model as well as additional surface drill holes to improve the resolution on certain key geological features within the Styldrift II mining area.
RBPlat emabarked on a detailed study and exploration drilling programme in 2010. This was followed by concept and pre-feasibility studies. The results of the pre-feasibility study indicated a positive business case and was presented to the RBPlat Board early in 2015. The Board approved the pre-feasibility study, however in view of the current macro-economic climate no further work will be undertaken on this project in the forseeable future.