The company said that it was now calling the properties the Tubatse platinum-group metals (PGMs) project.
The company said that assays from the 30 boreholes it drilled at the project proved a UG2 grade of 8,17 g/t of PGMs, and a grade of 5,03 g/t for the Merenky reef.
"This resource reflects borehole coverage amounting to approximately 1 700 ha of the project surface area, out of a total area of approximately 13 000 ha," Nkwe said in an emailed statement.
Nkwe had had the option to earn a 59% interest in Tubatse from its black economic-empowerment partner Genorah Resources.
It already owned 74% of two nearby farms, including Garatau.
The firm had indicated its intention to list on the JSE and Aim by the end of July.
Nkwe was currently conducting an expedited exploration programme and a bankable feasibility study (BFS) in the Garatau farm in the north, and the Eerste Geluk farm in the south, on the eastern limb of the Bushveld Complex, with a view to developing two mines with a combined annual production of one-million ounces a year of PGMs.
The BFS was expected to be complete in the north of the eastern limb of the Bushveld Complex by 2009, with completion in the south of the region expected in mid-2008.