mineral resource and mineral reserve statement ... - Impala Platinum

ZimplatsZimplats’ Ngezi Mine is located south-west of Harareand exploits the Sebakwe sub-chamber of the HartleyComplex in the Great Dyke. Also in the Hartley Complexis the Hartley Mine, but in the Darwendale sub-chamber,77km to the north of Ngezi. The Hartley Complex isabout 100km long and contains approximately 80% ofZimbabwe’s PGM Mineral Resources. The north-northeast-trendinglayered igneous rocks within the basin dipat between 5° and 20° near the margins and flatten outnear the centre.The platinum-bearing Main Sulphide Zone (MSZ) liesbetween 5m and 50m below the base of the maficsequence. The MSZ is a continuous layer between 2mand 10m thick that forms an elongated basin. Peak valuesfor the base metals and various PGMs are offset verticallywith palladium at the base, platinum in the centre andnickel above. It is difficult to visually identify the MSZ.Zimplats holds mining rights over two areas comprising atotal of 48 500ha across the Hartley Complex in the GreatDyke. Underground stoping at Zimplats currently consistsof mechanised bord-and-pillar layouts. Undergroundproduction is presently sourced from portals 1, 2 and4; establishment of a fourth underground section atportal 3 will commence in FY2011. Opencast miningremains suspended due to economic considerations.Zimplats MSZ metal ratios% 5PGM+AuPt 47.21%Pd 36.52%Rh 3.96%Ru 3.61%Ir 1.70%Au 7.00%ZimplatsMineral Resources as at 30 June 2010 as at 30 June 2009OrebodyCategoryTonnes(Mt)Grade(g/t)3PGE+AuGrade(g/t)5PGE+AuNi%Cu%Pt(Moz)Tonnes(Mt)Grade(g/t)3PGE+AuGrade(g/t)5PGE+AuNi%Cu%Pt(Moz)Ngezi portals– advanced toReserveMSZ Measured 65.4 3.50 3.70 0.10 0.08 3.7 68.8 3.50 3.69 0.10 0.08 3.9Indicated 229.5 3.54 3.74 0.11 0.08 13.2 234.5 3.53 3.73 0.11 0.08 13.4Total 295 3.53 3.73 0.11 0.08 17 303 3.52 3.72 0.11 0.08 17Ngezi portals –not advancedto ReserveMSZ Measured 43.6 3.44 3.63 0.10 0.09 2.4 38.0 3.38 3.58 0.10 0.09 2.0Indicated 227.1 3.50 3.69 0.12 0.09 12.6 226.4 3.51 3.70 0.12 0.09 12.5Inferred 134 3.44 3.63 0.13 0.08 8 134 3.44 3.63 0.13 0.09 8Total 404 3.47 3.66 0.12 0.09 23 399 3.48 3.67 0.12 0.09 22Mining leasenorth ofportal 10MSZ Indicated 53.8 4.56 4.80 0.22 0.18 3.6 53.8 4.56 4.80 0.22 0.18 3.6Inferred 829 3.59 3.79 0.15 0.13 45 829 3.59 3.79 0.15 0.13 45Total 883 3.65 3.85 0.15 0.13 49 883 3.65 3.85 0.15 0.13 49www.implats.co.za 40 Implats Mineral Resource and Mineral Reserve Statement 2010