Mineral Resources and Reserves for Petmin’s operations are reported in accordance with the requirements of the South African Code for the Reporting of Mineral Resources and Mineral Reserves (SAMREC).
The Mineral Resources and Reserves reported for SamQuarz are based on information compiled by SRK Consulting (South Africa) (Pty) Ltd, which was published in the Competent Person’s Report on 1 October 2008.
| Resource classification | Quartzite* (Mt) | Chert** (Mt) |
|---|---|---|
| Measured | 60.63 | 7.94 |
| Indicated | 19.97 | 3.54 |
| Total Measured and Indicated | 80.60 | 11.48 |
| Inferred | — | 48.31 |
| Total Resources | 80.60 | 59.79 |
* The estimated quartzite Mineral Resource was divided as follows:
Measured: total Resource within the base case pit outline
Indicated: balance of the Resource outside the base case pit outline
Inferred: there are no Inferred Resources.
** The estimated Mineral Resource for chert and chert products was divided as follows:
Measured: estimated Resource of chert and chert products within years one to 20 in base case pit outline
Indicated: balance of the estimated Resource from year 21 onward
Inferred: balance of the estimated Resource lying outside the base case pit limits.
| Reserve classification | Quartzite (Mt) | Chert–grade product (Mt) |
|---|---|---|
| Proved | 19.16 | 7.94 |
| Probable | 41.48 | 3.54 |
| Total | 60.64 | 11.48 |
| Reserves | Mineral | Reserve | Mining method | ROM (Mt) |
|---|---|---|---|---|
| 30 June 2009 | Quartzite/chert | Proved and Provable | Open-cast | 69.39 |
| Mined this year | (1.28) | |||
| 30 June 2010 | 68.11 |
Note – The estimated depletion of Reserves due to mining operations from the dates of the previous CPRs has not been independently verified.
| Resource classification | Gross in-situ tonnes (Mt) | Geological loss (%) | Mineable in-situ tonnes (Mt) |
|---|---|---|---|
| Area 1 – Measured | 10.911 | 10 | 9.820 |
| Area 1 – Indicated | 16.568 | 20 | 13.254 |
| Area 1 – Inferred | 8.596 | 50 | 4.298 |
| Total – Area 1 | 36.075 | 24 | 27.372 |
| Area 2 – Measured | 2.667 | 10 | 2.400 |
| Area 2 – Indicated | — | — | — |
| Area 2 – Inferred | — | — | — |
| Total – Area 2 | 2.667 | 10 | 2.400 |
| Area 3 – Measured | — | — | — |
| Area 3 – Indicated | — | — | — |
| Area 3 – Inferred | 42.847 | 50 | 21.424 |
| Total – Area 3 | 42.847 | 50 | 21.424 |
| Total – Areas 1, 2 and 3 | 81.589 | 37 | 51.196 |
| Resource classification | Mineable in-situ tonnes (Mt) |
|---|---|
| Luhlanga – Measured | 11.900 |
| Luhlanga – Indicated | 3.370 |
| Luhlanga – Inferred | 0.200 |
| Total – Luhlanga | 15.470 |
| KwaQubuka – Measured | — |
| KwaQubuka – Indicated | — |
| KwaQubuka – Inferred | 2.500 |
| Total – KwaQubuka | 2.500 |
| Emalehlene – Measured | — |
| Emalehlene – Indicated | — |
| Emalehlene – Inferred | 6.000 |
| Total – Emalehlene | 6.000 |
| Total – Luhlanga, KwaQubuka and Emalehlene | 23.970 |
| Reserve classification | Mining Method | Mineable in Situ (Mt) | Extraction (%) | ROM (Mt) | Practical yield (%) | Sales tonnes (Mt) |
|---|---|---|---|---|---|---|
| Area 1 – Proved | Open-cast | 9.820 | 95 | 9.329 | 68.6 | 6.400 |
| Area 1 – Probable | Open-cast | 13.254 | 95 | 12.591 | 68.6 | 8.638 |
| Total – Area 1 | Open-cast | 23.074 | 95 | 21.920 | 68.6 | 15.038 |
| Area 2 – Proved | Open-cast | 2.400 | 95 | 2.280 | 68.6 | 1.564 |
| Area 2 – Probable | Open-cast | - | — | — | — | — |
| Total – Area 2 | Open-cast | 2.400 | 95 | 2.280 | 68.6 | 1.564 |
| Total – Areas 1 and 2 | 25.474 | 24.200 | 16.602 |
| Reserves | Mineral | Reserve classification | Mining method | ROM (Mt) |
|---|---|---|---|---|
| At start of mining | Anthracite | Proved and Probable | Open-cast | 24.200 |
| Mined in 2007 | (0.090)* | |||
| 30 June 2007 | 21.110 | |||
| Mined in 2008 | (0.800)* | |||
| 30 June 2008 | 23.310 | |||
| Mined in 2009 | (0.810)* | |||
| 30 June 2009 | 22.500 | |||
| Mined in 2010 | (0.764)* | |||
| 30 June 2010 | 21.737 |
* Based on selective mining – excluding seam parting, and is equivalent to the 1.1 million ROM tonnes (bulk mining basis) reported in the 2010 directors’ review of Somkhele.
Note – the mine depletion table has not been reviewed by an independent competent person and is provided by management for guidance only.
The SAMREC-compliant Resources outlined below were calculated by MSA GeoServices (Pty) Ltd for the weathered portion of the Resource and were published in March 2010.
| Tonnes '000 |
Bulk Density | Al2O3 % |
CaO % |
Fe % |
Fe2O3 % |
MgO % |
P2O5 % |
SiO2 % |
TiO2 % |
V2O5 % |
|
|---|---|---|---|---|---|---|---|---|---|---|---|
| Measured | 44,252 | 3.51 | 5.01 | 0.71 | 43.39 | 61.99 | 1.83 | 0.07 | 12.86 | 14.69 | 0.15 |
| Indicated | 29,099 | 3.54 | 5.19 | 0.96 | 42.99 | 61.41 | 1.80 | 0.07 | 12.54 | 15.08 | 0.15 |
| Measured and Indicated | 73,351 | 3.52 | 5.08 | 0.81 | 43.23 | 61.76 | 1.82 | 0.07 | 12.73 | 14.84 | 0.15 |
| Inferred | 12,825 | 3.63 | 4.48 | 0.78 | 45.70 | 65.29 | 1.79 | 0.08 | 10.22 | 15.96 | 0.15 |
© 2009 Petmin Limited