Both the Merensky and underlying UG2 Reefs occur on the property but only the UG2 is currently exploited. The UG2 outcrops in the Klein Dwarsrivier valley over a north-south strike length of 7.5 kilometres and dips to the west at about 7 to 10 degrees. The vertical separation between the Merensky and UG2 Reefs is around 140 metres. Due to the extreme topography, the Merensky reef outcrops further up the mountain slope and also results in the UG2 occurring at a depth of 935 metres below surface on the western boundary.
Three distinct reef types have been defined for the UG2 Reef at Two Rivers, namely the ‘normal reef’ with a thick main chromitite layer; a ‘split reef’ characterised by an internal pyroxenite/norite lens within the main chromitite layer; and a ‘multiple split reef’ with numerous pyroxenite/norite lenses occuring within the main chromitite layer.
MINERAL RESOURCES AND MINERAL RESERVES
Two Rivers Mineral Resources and Mineral Reserve Statement 2015