PLATINUM GROUP METALS LTD
For the period ended Aug 31, 2024. Filed Oct 9, 2024.
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Aug 31, 2024 · Filed Oct 9, 2024
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EX-99.1 · Table 14-6: Variogram Model Parameters
Table 14-6: Variogram Model Parameters
| Parameter | Sill | Angle 1 | Axis 1 | Nugget(%) | Sill 1(%) | X1Range | Y1Range | Z1 Range | Sill 2(%) | X2 Range | Y2Range | Z2 Range |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| T-Zone - TZ | ||||||||||||
| Density (t/m3) | 0.0047 | 0 | 3 | 30 | 100 | 311 | 311 | 3 | 100 | 0 | 0 | 0 |
| Pt (g/t) | 0.9181 | 0 | 3 | 28 | 51 | 51 | 63 | 2 | 100 | 199 | 199 | 3 |
| Pd (g/t) | 4.1948 | 0 | 3 | 43 | 56 | 56 | 69 | 2 | 100 | 176 | 176 | 3 |
| Rh (g/t) | 0.0021 | 0 | 3 | 42 | 97 | 97 | 67 | 3 | 100 | 308 | 308 | 3 |
| Au (g/t) | 0.6551 | 0 | 3 | 40 | 80 | 99 | 99 | 2 | 100 | 221 | 221 | 3 |
| Ni (%) | 0.0035 | 0 | 3 | 37 | 80 | 77 | 77 | 2 | 100 | 252 | 252 | 3 |
| Cu (%) | 0.0187 | 0 | 3 | 25 | 73 | 92 | 92 | 2 | 100 | 253 | 253 | 3 |
| 4E (g/t) | 9.3472 | 0 | 3 | 31 | 72 | 97 | 97 | 2 | 100 | 252 | 224 | 3 |
| T-Zone - T0 | ||||||||||||
| Density (t/m3) | 0.0038 | 0 | 3 | 30 | 100 | 311 | 311 | 3 | 0 | 0 | 0 | 0 |
| Pt (g/t) | 0.5752 | 0 | 3 | 42 | 83 | 43 | 43 | 2 | 100 | 118 | 118 | 3 |
| Pd (g/t) | 1.7823 | 0 | 3 | 24 | 63 | 46 | 46 | 2 | 100 | 118 | 118 | 3 |
| Rh (g/t) | 0.0013 | 0 | 3 | 31 | 45 | 49 | 49 | 2 | 100 | 119 | 119 | 3 |
| Au (g/t) | 0.1904 | 0 | 3 | 38 | 78 | 86 | 86 | 2 | 100 | 237 | 237 | 3 |
| Ni (%) | 0.0036 | 0 | 3 | 37 | 48 | 67 | 67 | 2 | 100 | 127 | 127 | 3 |
| Cu (%) | 0.0193 | 0 | 3 | 31 | 46 | 73 | 73 | 2 | 100 | 125 | 125 | 3 |
| 4E (g/t) | 6.2014 | 0 | 3 | 25 | 27 | 66 | 66 | 2 | 100 | 116 | 116 | 3 |
| F-Zone - North | ||||||||||||
| Density (t/m3) | 0.0035 | 47 | 3 | 39 | 83 | 100 | 100 | 5 | 100 | 350 | 350 | 5 |
| Pt (g/t) | 0.3070 | 47 | 3 | 42 | 82 | 72 | 53 | 3 | 100 | 244 | 305 | 5 |
| Pd (g/t) | 1.7010 | 47 | 3 | 34 | 78 | 81 | 56 | 3 | 100 | 231 | 326 | 5 |
| Rh (g/t) | 0.0010 | 47 | 3 | 42 | 79 | 76 | 60 | 3 | 100 | 218 | 322 | 5 |
Waterberg Technical Report
| Parameter | Sill | Angle 1 | Axis 1 | Nugget(%) | Sill 1(%) | X1Range | Y1 Range | Z1Range | Sill 2(%) | X2Range | Y2Range | Z2 Range |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Au (g/t) | 0.0100 | 47 | 3 | 40 | 80 | 73 | 84 | 3 | 100 | 225 | 306 | 5 |
| Ni (%) | 0.0070 | 47 | 3 | 43 | 71 | 65 | 86 | 3 | 100 | 227 | 308 | 5 |
| Cu (%) | 0.0040 | 47 | 3 | 25 | 75 | 71 | 101 | 3 | 100 | 221 | 348 | 5 |
| 4E (g/t) | 4.0160 | 47 | 3 | 39 | 83 | 88 | 55 | 3 | 100 | 234 | 325 | 5 |
| F-Zone - Boundary North | ||||||||||||
| Density (t/m3) | 0.0053 | 30 | 3 | 40 | 80 | 100 | 100 | 3 | 100 | 314 | 335 | 5 |
| Pt (g/t) | 0.3120 | 30 | 3 | 42 | 64 | 97 | 86 | 3 | 100 | 286 | 252 | 5 |
| Pd (g/t) | 1.1722 | 30 | 3 | 36 | 86 | 101 | 90 | 3 | 100 | 291 | 254 | 5 |
| Rh (g/t) | 0.0009 | 30 | 3 | 42 | 79 | 76 | 60 | 3 | 100 | 285 | 270 | 5 |
| Au (g/t) | 0.0107 | 30 | 3 | 36 | 73 | 103 | 110 | 3 | 100 | 290 | 275 | 5 |
| Ni (%) | 0.0071 | 30 | 3 | 43 | 71 | 103 | 122 | 3 | 100 | 315 | 251 | 5 |
| Cu (%) | 0.0031 | 30 | 3 | 25 | 75 | 99 | 119 | 3 | 100 | 281 | 257 | 5 |
| 4E (g/t) | 3.2466 | 30 | 3 | 39 | 68 | 104 | 100 | 3 | 100 | 291 | 245 | 5 |
| F-Zone - Boundary South | ||||||||||||
| Density (t/m3) | 0.0052 | 30 | 3 | 40 | 80 | 100 | 100 | 3 | 100 | 314 | 335 | 5 |
| Pt (g/t) | 0.2356 | 30 | 3 | 42 | 43 | 116 | 99 | 3 | 100 | 375 | 267 | 5 |
| Pd (g/t) | 1.1501 | 30 | 3 | 36 | 61 | 118 | 92 | 3 | 100 | 371 | 245 | 5 |
| Rh (g/t) | 0.0006 | 30 | 3 | 40 | 55 | 112 | 121 | 3 | 100 | 369 | 265 | 5 |
| Au (g/t) | 0.0084 | 30 | 3 | 38 | 75 | 103 | 110 | 3 | 100 | 369 | 252 | 5 |
| Ni (%) | 0.0039 | 30 | 3 | 33 | 62 | 116 | 102 | 3 | 100 | 370 | 287 | 5 |
| Cu (%) | 0.0026 | 30 | 3 | 29 | 49 | 100 | 94 | 3 | 100 | 283 | 196 | 5 |
| 4E (g/t) | 2.3209 | 30 | 3 | 39 | 63 | 114 | 100 | 3 | 100 | 369 | 245 | 5 |
| F-Zone - Central | ||||||||||||
| Density (t/m3) | 0.0044 | 0 | 3 | 25 | 25 | 164 | 164 | 3 | 100 | 402 | 402 | 0 |
Waterberg Technical Report
| Parameter | Sill | Angle 1 | Axis 1 | Nugget(%) | Sill 1 (%) | X1 Range | Y1 Range | Z1 Range | Sill 2 (%) | X2Range | Y2Range | Z2 Range |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pt (g/t) | 0.4229 | 0 | 3 | 30 | 72 | 56 | 56 | 3 | 100 | 322 | 322 | 3 |
| Pd (g/t) | 2.0997 | 0 | 3 | 33 | 72 | 64 | 64 | 3 | 100 | 388 | 388 | 3 |
| Rh (g/t) | 0.0015 | 0 | 3 | 32 | 52 | 95 | 95 | 3 | 100 | 401 | 401 | 3 |
| Au (g/t) | 0.0098 | 0 | 3 | 39 | 71 | 94 | 94 | 3 | 100 | 388 | 388 | 3 |
| Ni (%) | 0.0042 | 0 | 3 | 38 | 72 | 52 | 52 | 3 | 100 | 291 | 291 | 3 |
| Cu (%) | 0.0023 | 0 | 3 | 34 | 70 | 56 | 56 | 3 | 100 | 265 | 265 | 3 |
| 4E (g/t) | 4.9126 | 0 | 3 | 40 | 78 | 52 | 52 | 3 | 100 | 390 | 390 | 3 |
| F-Zone - South | ||||||||||||
| Density (t/m3) | 0.0035 | 0 | 3 | 39 | 83 | 100 | 100 | 5 | 100 | 280 | 240 | 5 |
| Pt (g/t) | 0.4700 | 0 | 3 | 47 | 47 | 114 | 62 | 3 | 100 | 254 | 170 | 5 |
| Pd (g/t) | 1.8752 | 0 | 3 | 34 | 42 | 116 | 65 | 3 | 100 | 293 | 193 | 5 |
| Rh (g/t) | 0.0019 | 0 | 3 | 27 | 28 | 112 | 110 | 3 | 100 | 236 | 209 | 5 |
| Au (%) | 0.0108 | 0 | 3 | 27 | 27 | 134 | 72 | 3 | 100 | 281 | 236 | 5 |
| Ni (%) | 0.0020 | 0 | 3 | 50 | 50 | 115 | 95 | 3 | 100 | 262 | 253 | 5 |
| Cu (g/t) | 0.0008 | 0 | 3 | 42 | 43 | 103 | 143 | 3 | 100 | 240 | 267 | 5 |
| 4E (g/t) | 4.4656 | 0 | 3 | 34 | 37 | 109 | 63 | 3 | 100 | 280 | 200 | 5 |
Waterberg Technical Report
14.1.14 Global Mean Model
Simple kriging (SK) using a global mean was used to estimate grades in areas where there was insufficient data; the model needed to be extrapolated into those areas. The SK model was generally applied in the Inferred Resource category. Global means were calculated for several block sizes / de-clustered data orientations. Based on this exercise, an appropriate global mean was selected for use in the SK estimation.
SK was used for the second and third search radius, while ordinary kriging (OK) was used for the first search radius.
14.1.15 Grade Estimation
Estimation was completed using Datamine Studio ver21 and Minesoft (Pty) Ltd.'s (Minesoft) geostatistical package RES ver4.
Grade parameters estimated were 4E, Pt, Pd, Rh, Au, Ni, Cu, and density using OK and SK.
The following applies to the mineral resource area and was undertaken using Minesoft's RES geostatistical program. The following parameters were used in the kriging process.
25 m x 25 m x 1 m block size.
3D Estimation was conducted.
Search Ellipses Aligned with the variogram ranges.
Minimum Number of Samples: 18.
Maximum Number of Samples: 30.
Interpolation Methods - OK and SK.
14.1.16 Model Validation
The models are validated based on several parameters. A visual validation comparing drill hole grades to block model grades, swath plots, search volumes, number of samples used in an estimate, distance from samples that represent the variogram ranges, kriging efficiency, and slope of regression plots were all used to validate the estimation process.
14.1.17 Rotate Back to Rotated Plane
The kriging models were subdivided into smaller cells sized 5 m x 5 m x 1 m, maintaining the parent cell grades. These cell centers were projected back to the rotated plane, as can be seen in Figure 14-23.
Waterberg Technical Report
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