Back to Anglo Platinum  | Downloads  | Glossary  | Contact
	Home          Profile & mission          Key features          Chairman‘s statement          The board & executive          CEOs‘ review          Finance review       +   Market review       +   Operations review          Ore reserves & mineral resources review          Projects review            Company statistics Ten-year financial review Salient statistics Operating contribution and margin by mine Total operations Analysis of group capital expenditure Ore Reserves and Mineral Resources       +   Financial statements       +   Directorate & management       +   Shareholders‘ information	Company statistics  |  Ore Reserves and Mineral Resources   print page   email page   PDF 796KB
		Mineral Resources, as at 31 December 2007 Mineral Resources by reef The figures represent Anglo Platinum's attributable interests. Reef Category Resources million tonnes Grade 4E g/t Contained 4E tonnes Contained 4E million troy ounces     2007 2006 2007 2006 2007 2006 2007 2006 Merensky Reef Measured 107.8 96.4 5.33 5.42 574.4 523.0 18.5 16.8 Indicated 276.5 248.3 5.29 5.39 1,462.7 1,337.8 47.0 43.0 Measured and Indicated 384.3 344.7 5.30 5.40 2,037.1 1,860.7 65.5 59.8 Inferred 876.5 1,095.9 5.29 5.48 4,633,0 6,010.9 149.0 193.3 2.5 – 3 g/t cut-off Total 1,260.8 1,440.6 5.29 5.46 6,670.0 7,871.6 214.4 253.1 UG2 chromitite Measured 337.2 312.3 5.69 5.52 1,919.0 1,725.3 61.7 55.5 Indicated 499.7 634.3 5.38 5.37 2,686.9 3,404.9 86.4 109.5 Measured and Indicated 836.9 946.6 5.50 5.42 4,605.9 5,130.3 148.1 164.9 Inferred 1,223.2 1,321.4 5.22 5.54 6,379.8 7,325.5 205.1 235.5 1.8 g/t cut-off Total 2,060.0 2,268.0 5.33 5.49 10,985.7 12,455.7 353.2 400.5 Platreef Measured 176.8 158.8 1.93 1.91 340.8 303.2 11.0 9.7 Indicated 790.6 791.2 2.21 2.22 1,749.4 1,757.7 56.2 56.5 Measured and Indicated 967.4 950.0 2.16 2.17 2,090.2 2,061.0 67.2 66.3 Inferred 1,408.0 1,449.4 1.88 1.82 2,647.7 2,643.9 85.1 85.0 1.0 g/t cut-off Total 2,375.4 2,399.4 1.99 1.96 4,737.9 4,704.9 152.3 151.3 All Reefs Measured 621.8 567.6 4.56 4.50 2,834.2 2,551.5 91.1 82.0 Indicated 1,566.8 1,673.8 3.77 3.88 5,899.0 6,500.4 189.7 209.0 Measured and Indicated 2,188.6 2,241.4 3.99 4.04 8,733.2 9,052.0 280.8 291.0 Inferred 3,507.6 3,866.7 3.89 4.13 13,660.4 15,980.3 439.2 513.8   Total 5,696.2 6,108.1 3.93 4.10 22,393.6 25,032.3 720.0 804.8 Tailings Measured Indicated 151.4 152.3 1.05 1.06 159.7 160.9 5.1 5.2 Measured and Indicated 151.4 152.3 1.05 1.06 159.7 160.9 5.1 5.2 Inferred   Total metric 151.4 152.3 1.05 1.06 159.7 160.9 5.1 5.2 Footnotes   General The above figures represent Anglo Platinum’s attributable interests. Rounding of figures may result in computational discrepancies. 4E grade reported: sum of platinum, palladium, rhodium and gold grades. Joint ventures The BEE transactions announced with Anooraq Resources and Mvela Resources will be finalised during 2008. The 2007 annual report reflects Anglo Platinum's attributable Mineral Resource and Ore Reserve percentages on the same basis as per the 2006 annual report:   •  Anooraq Anglo Platinum Boikgantsho Project: 50%   •  Lebowa: 100%   •  Ga-Phasha: 50%   •  Booysendal: 50%   •  Northam: 22.5%   Go to Mineral Resources related to the transactions.   Mineral rights 2006 annual report Special note regarding mineral rights for RPM (portions of Rooderand 46JQ, Beestkraal 290JQ, “Others” [Garatouw 282KT, Hoepakrantz 291KT, Eerste Geluk 322KT and Nooitverwacht 324K]) and for Kalkfontein 367KT):   •   Where applications for new-order prospecting rights have been initially refused by the relevant authorities, but are still the subject of ongoing judicial review and discussions with the relevant authorities and where Anglo Platinum has a reasonable expectation that the prospecting rights will be granted in due course, the relevant resources have been included in the statement.   2007 annual report Due to the DME’s refusal to grant the abovementioned prospecting right applications and an undertaking by Anglo Platinum not to advance legal proceedings pending negotiations with the DME and third parties, the following Mineral Resources are not included in the total Mineral Resources:   •   Merensky Reef: 161.3 Mt @ 5.78g/t (30.0 Moz).   •   UG2 Reef: 189.5 Mt @ 6.00 g/t (36.5 Moz).   •   Merensky and UG2 Reef: 350.8 Mt @ 5.90 g/t (66.5 Moz).   •   94.6% of the abovementioned combined Merensky and UG2 Reef Mineral Resources are in the Inferred resource classification category.   •   The 66.5 Moz reflects a loss of 8.5% of Anglo Platinum’s total Mineral Resources.   •   The Merensky Reef is divided into the following: 1. Ptn. of Rooderand: 1.7 Mt @ 7.99 g/t (0.4 Moz). 2. Ptn. of Beestkraal: 46.4 Mt @ 7.81 g/t (11.7 Moz). 3. Modikwa Deeps: 79.7 Mt @ 5.05 g/t (12.9 Moz). 4. Kalkfontein: 33.4 Mt @ 4.59 g/t (4.9 Moz).   •   The UG2 Reef is divided into the following: 1. Ptn. of Rooderand: 5.3 Mt @ 5.39 g/t (0.9 Moz). 2. Ptn. of Beestkraal: 57.1 Mt @ 5.68 g/t (10.4 Moz). 3. Modikwa Deeps: 101.0 Mt @ 5.72 g/t (18.6 Moz). 4. Kalkfontein: 26.0 Mt @ 7.86 g/t (6.6 Moz).   Other exploration projects 2006 annual report:   •   50% of the Mineral Resources in Modikwa Deeps was quoted (Garatouw, Hoepakrantz and Eerste Geluk and 25% of those on Nooitverwacht [due to depth constraints only 50% of the Mineral Resources]); and    •   50% of the portions of the Driekop 253KT UG2 Reef.    •   Modikwa Deeps and Driekop UG2 Reef are part of the Modikwa Joint Venture but were quoted separately in ‘Others’ for comparison with the 2005 figures.    •   In addition, 50% of portion 11/4 of Frischgewaagd 96JQ was included.    2007 annual report:   •   Only 50% of portions of Driekop is tabulated.   •   50% of portion 11/4 of Frischgewaagd 96JQ is excluded due to a change in the WBJV agreement.   •   50% of Modikwa Deeps Mineral Resources is excluded due to refusal of prospecting rights by the DME (see footnote). Merensky Reef A cut-off grade of 2.5 – 3 g/t has been used, depending on reef characteristics. The global tonnage decreases by 12.5% from 1,440.6 Mt to 1,260.8 Mt (-179.8 Mt) equivalent to a drop of 38.6 Moz results mainly from:   •   The exclusion of the previously reported Mineral Resources for RPM (portions of Rooderand 46JQ, Beestkraal 290JQ, 'Other Exploration Projects [Garatouw 282KT, Hoepakrantz 291KT, Eerste Geluk 322KT and Nooitverwacht 324KT] and for Kalkfontein 367KT. The Mineral Resources not included in the totals amounts to 161.3 Mt (-30.0 Moz). These Mineral Resources are excluded due to refusal of prospecting rights by the DME (see footnote).    •   Booysendal Joint Venture: Exploration, re-interpretation and re-evaluation of the ore body resulted in a decrease of the total Mineral Resource tonnage and a decrease in the total content. In the Buttonshope area a low-grade domain has been identified (Inferred Mineral Resources). For this area a 2.5 g/t 4E PGE cut-off grade has been applied as they form a cohesive domain. Consequently the Mineral Resource tonnage decreased by 28.7% from 157.9 Mt to 112.6 Mt (-45.3 Mt).    •   BRPM Joint Venture where due to the successful completion of a pre- and consequently a feasibility study Mineral Resources were converted to Ore Reserves (Styldrift farm). The total drop in Mineral Resources accounts for 28.0 Mt (-4.8 Moz).    •   The decrease in tonnage is offset by the gain of Mineral Resources at the Ga-Phasha PGM Project (+36.6 Mt, +3.1 Moz) and the Der Brochen Project (+23.9 Mt, +3.4 Moz).    The global grade decreases from 5.46 g/t to 5.29 g/t (-0.17 g/t) result mainly from:   •   Previously included high-grade Mineral Resources at portions of Beestkraal (Rustenburg Section) [46.4 Mt @ 7.81 g/t]. These Mineral Resources are excluded due to refusal of prospecting rights by the DME (see footnote).    •   Booysendal Joint Venture, where extensive exploration, re-interpretation and re-evaluation resulted in a lower Mineral Resource grade.    •   Ga-Phasha Joint Venture where exploration and re-evaluation resulted in a substantial increase of the resource cut (from 0.9 m to 1.32 m) to include mineralised and economic footwall material. The content of the project increased by 22.0% (+3.1 Moz), however the grade decreased by 0.84 g/t.    The Measured Mineral Resources increased by 11.8% from 96.4 Mt to 107.8 Mt (+11.4 Mt) or by 9.8% in content mainly due to higher confidence at:   •   Der Brochen Project (+12.1 Mt); and   •   Lebowa (+5.6 Mt).   •   At Union Section (+7.5 Mt) where, due to economic assumptions, previously reported Ore Reserves have been restated as Mineral Resources.    •   The increase in tonnage is offset by the decrease at BRPM joint venture (-12.9 Mt) where Mineral Resources were converted to Ore Reserves.    The Indicated Mineral Resources increased by 11.4% from 248.3 Mt to 276.5 Mt (+28.2 Mt) or by 9.3% in content mainly due to higher confidence at:   •   Der Brochen Project (+20.1 Mt); and   •   Ga-Phasha PGM Project (+10.3 Mt).   •   At Union Section (+15.6 Mt) where, due to economic assumptions, previously reported Ore Reserves have been restated as Mineral Resources.   •   The increase in tonnage is offset by the decrease at BRPM Joint Venture (-14.5 Mt) where Mineral Resources were converted to Ore Reserves. UG2 Reef A cut-off grade of 1.8 g/t has been used. The global tonnage decreases by 9.2% from 2,268.0 Mt to 2,060.0 Mt (-208.0 Mt) equivalent to a drop of 47.3 Moz results mainly from:   •   The exclusion of the previously reported Mineral Resources for RPM (portions of Rooderand 46JQ, Beestkraal 290JQ, 'Other Exploration Projects, [Garatouw 282KT, Hoepakrantz 291KT, Eerste Geluk 322KT and Nooitverwacht 324KT] and for Kalkfontein 367KT. The Mineral Resources not included in the totals amount to 189.5 Mt (36.5 Moz). These Mineral Resources are excluded due to refusal of prospecting rights by the DME (see footnote).    •   Rustenburg Section where, due to the successful completion of two prefeasibility studies, a substantial amount of Mineral Resources were converted to Ore Reserves (Turffontein and Frank shaft).    •   Der Brochen Project where extensive exploration and re-evaluation resulted in tonnage decrease by 28.8 Mt. However, the grade increased.    •   Modikwa Platinum Mine where additional Mineral Resources were converted to Ore Reserves resulting in a Mineral Resource tonnage decrease by 11.3 Mt.    •   The decrease in tonnage is offset by the gain of Mineral Resource tonnages at the Booysendal Joint Venture and to a lesser extent at Amandelbult Section and Twickenham Platinum Mine Project.    The global grade decreases from 5.49 g/t to 5.33 g/t (-0.16 g/t) results mainly from:   •   Previously included high-grade Mineral Resources at portions of Kalkfontein 367KT [26.0 Mt @ 7.86 g/t]. These Mineral Resources are excluded due to refusal of prospecting rights by the DME. (see footnote).   •   Booysendal Joint Venture, where the overall resource cut increased substantially due a change in the envisaged mining philosophy and related mine design to mechanised mining, resulting in a grade decrease of 1.11 g/t from 4.92 g/t to 3.81 g/t.    The Measured Mineral Resources increased by 7.9% from 312.3 Mt to 337.2 Mt (+24.8 Mt) or by 11.2% in content mainly due to higher confidence at:   •   Rustenburg Section (+30.5 Mt).   •   Lebowa (+26. 3Mt).   •   Amandelbult Section (+12.9 Mt).   •   Union Section (+9.9 Mt).   •   The increase in tonnage is offset by the decrease of Measured Mineral Resource tonnages at the Der Brochen Project (-37.0 Mt) and Pandora Project (-6.0 Mt) due to exploration and re-evaluation, while the    •   Modikwa Platinum Mine decrease (-8.9 Mt) is due to the conversion from Mineral Resources to Ore Reserves. Platreef The 1.0 g/t cut-off grade that has been used, is consistent with previous reporting.   •   PPRust North:   1. Exploration and re-evaluation of the PPRust North orebody resulted in increased confidence in the orebody. The Measured Mineral Resources increased by 25.2% from 86.3 Mt to 108.0 Mt (+21.7 Mt).  2. As a result of exploration, re-interpretation and re-evaluation of the PPRust North orebody, previously reported Inferred Mineral Resources for the low-grade footwall mineralisation have been reduced. This, together with the higher confidence results is an overall tonnage decrease by 2.4% from 672.1 Mt to 656.0 Mt (-16.1 Mt), but due to the slightly increased grade the content increased by 4.8% from 43.1 Moz to 45.1 Moz (+2.1 Moz).    •   PPRust: The total Mineral Resource tonnage decreased by 1.0% from 2,399.4 Mt to 2,375.4 Mt (-24.0 Mt) but the content increased by 0.7%. Due to the increased confidence at PPRust North the total Measured Mineral Resources increased by 11.3% from 158.8 to 176.8 Mt (+18.0 Mt).  Tailings   •   These are reported separately as Mineral Resources but are not aggregated to the global Mineral Resource summation.    •   Operating tailings dams for current mining operations cannot be geologically assessed and therefore are not reported as part of their Mineral Resources. At Rustenburg and Union Section historical dams have been evaluated and the tailings form part of their Mineral Resource statement.
		Page up
		Page  1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20  21  22  23     Previous page  |  Company statistics 21/23
		Disclaimer