Exploration Program
Rox has undertaken two drilling campaigns at Myrtle. Results are shown in the tables below.
These drilling programs have shown Myrtle to be a very large mineralised system that stretches over at least 3km east-west and 1km north-south (Figure 1).
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Figure 1: Myrtle Drill Location Plan
Recently Rox discovered the Eastern Zone, which remains open along strike and down dip.
Table 1: Drill Intercepts at 3% Zn + Pb Cut-off
| Hole | From (m) | To (m) | Interval (m) | Pb % | Zn % | Ag g/t | Pb+Zn % |
| MY 6 | 455.95 | 465.20 | 9.25 | 0.49 | 2.91 | 0.7 | 3.40 |
| MY 6 | 473.50 | 480.20 | 6.70 | 1.81 | 5.70 | 0.4 | 7.51 |
| MY 6 | 487.00 | 489.00 | 2.00 | 0.99 | 3.01 | 0.0 | 4.00 |
| MY 7 | 389.40 | 391.40 | 2.00 | 0.49 | 4.13 | 0.4 | 4.62 |
| MY 8 | 240.63 | 247.00 | 6.37 | 0.40 | 3.84 | 0.1 | 4.24 |
| MY 10 | 120.00 | 127.00 | 7.00 | 0.95 | 3.19 | 0.9 | 4.14 |
| MY 10 | 141.00 | 145.00 | 4.00 | 0.33 | 4.20 | 1.0 | 4.52 |
| MY 10 | 191.00 | 195.00 | 4.00 | 1.61 | 5.57 | 0.8 | 7.18 |
| MY 10 | 216.00 | 241.00 | 25.00 | 1.35 | 4.82 | 0.2 | 6.17 |
| MY 16 | 160.00 | 164.00 | 4.00 | 0.50 | 5.57 | 1.4 | 6.07 |
| MY 16 | 179.00 | 198.00 | 19.00 | 1.34 | 4.14 | 0.8 | 5.48 |
| MY 16 | 217.00 | 219.00 | 2.00 | 1.42 | 4.12 | 1.2 | 5.54 |
| MY 17 | 407.75 | 417.00 | 9.25 | 1.00 | 4.07 | 0.7 | 5.07 |
| MY 17 | 465.00 | 472.46 | 7.46 | 1.48 | 3.47 | 2.5 | 4.95 |
| MY 17 | 394.77 | 397.03 | 2.26 | 0.32 | 3.37 | 0.7 | 3.69 |
| MY 19 | 149.00 | 161.00 | 12.00 | 0.55 | 4.02 | 1.0 | 4.57 |
| MY 19 | 163.00 | 167.00 | 4.00 | 0.21 | 4.44 | 1.6 | 4.64 |
| MY 20 | 327.00 | 330.00 | 3.00 | 0.49 | 4.24 | 0.8 | 4.73 |
| MY 20 | 339.00 | 345.30 | 6.30 | 0.48 | 4.85 | 0.6 | 5.33 |
| MY 20 | 363.10 | 372.00 | 8.90 | 1.28 | 5.31 | 0.6 | 6.59 |
| MY 20 | 430.00 | 433.00 | 3.00 | 1.23 | 2.79 | 1.3 | 4.02 |
| MYR 22 | 60.00 | 71.00 | 11.00 | 1.12 | 3.19 | 0.6 | 4.32 |
| MYR 23 | 115.00 | 121.00 | 6.00 | 0.30 | 3.31 | 0.6 | 3.62 |
| MYR 24 | 41.00 | 50.00 | 9.00 | 1.28 | 3.44 | 0.9 | 4.72 |
| MYR 25 | 58.00 | 63.00 | 5.00 | 1.17 | 4.13 | 1.1 | 5.30 |
| MYR 25 | 69.00 | 72.00 | 3.00 | 1.63 | 2.48 | 1.8 | 4.11 |
| MYR 25 | 74.00 | 76.00 | 2.00 | 1.21 | 2.12 | 1.1 | 3.33 |
| MYR 26 | 128.00 | 133.00 | 5.00 | 0.64 | 3.02 | 0.9 | 3.66 |
| MYR 26 | 136.00 | 137.00 | 1.00 | 0.70 | 2.45 | 1.0 | 3.15 |
| MYR 27 | 35.00 | 37.00 | 2.00 | 0.88 | 3.16 | 0.7 | 4.03 |
| MYR 27 | 42.00 | 43.00 | 1.00 | 0.69 | 3.60 | 1.4 | 4.29 |
| MYR 27 | 45.00 | 47.00 | 2.00 | 0.88 | 2.71 | 0.9 | 3.59 |
| MYR 28 | 99.00 | 104.00 | 5.00 | 0.24 | 3.37 | 0.9 | 3.61 |
| MYR 29 | 59.00 | 62.00 | 3.00 | 0.30 | 3.62 | 1.3 | 3.92 |
| MYR 29 | 72.00 | 73.00 | 1.00 | 0.45 | 4.74 | 2.7 | 5.19 |
| MYR 37 | 47.00 | 48.00 | 1.00 | 1.59 | 3.33 | 0.5 | 4.92 |
| MYR 38 | 16.00 | 19.00 | 3.00 | 0.93 | 3.68 | 1.8 | 4.61 |
| MYR 38 | 21.00 | 23.00 | 2.00 | 0.73 | 2.97 | 1.3 | 3.70 |
| MYR 41 | 94.00 | 106.00 | 12.00 | 0.75 | 2.99 | 0.5 | 3.74 |
| MYR 42 | 47.00 | 48.00 | 1.00 | 0.82 | 2.82 | 1.3 | 3.64 |
| MYR 43 | 66.00 | 71.00 | 5.00 | 1.83 | 3.87 | 0.5 | 5.70 |
| MYR 44 | 37.00 | 38.00 | 1.00 | 0.51 | 3.54 | 0.5 | 4.05 |
| MYR 44 | 41.00 | 42.00 | 1.00 | 1.68 | 3.94 | 0.5 | 5.62 |
| MYR 44 | 48.00 | 49.00 | 1.00 | 1.43 | 2.63 | 1.1 | 4.06 |
| MYR 45 | 62.00 | 70.00 | 8.00 | 1.42 | 3.41 | 0.7 | 4.83 |
| MYR 46 | 66.00 | 67.00 | 1.00 | 1.84 | 2.64 | 0.6 | 4.48 |
| MYR 46 | 71.00 | 72.00 | 1.00 | 1.08 | 2.45 | 0.7 | 3.53 |
| MYR 48 | 61.00 | 64.00 | 3.00 | 0.41 | 2.83 | 0.5 | 3.26 |
| MYR 48 | 66.00 | 72.00 | 6.00 | 0.93 | 2.93 | 0.5 | 3.86 |
Table 2: Drill Intercepts at 5% Zn + Pb Cut-off
| Hole | From (m) | To (m) | Interval (m) | Zn % | Pb % | Ag g/t | Zn+Pb % |
| MY 6 | 473.50 | 480.20 | 6.70 | 5.70 | 1.81 | 0.4 | 7.51 |
| MY 10 | 125.00 | 127.00 | 2.00 | 4.22 | 1.62 | 3.0 | 5.84 |
| MY 10 | 192.00 | 194.00 | 2.00 | 7.92 | 2.42 | 1.5 | 10.34 |
| MY 10 | 216.00 | 231.00 | 15.00 | 5.50 | 1.09 | 0.3 | 6.59 |
| MY 10 | 233.00 | 237.00 | 4.00 | 5.07 | 2.80 | 0.0 | 7.86 |
| MY 16 | 160.00 | 164.00 | 4.00 | 5.57 | 0.50 | 1.4 | 6.07 |
| MY 16 | 180.00 | 184.00 | 4.00 | 4.89 | 1.05 | 1.0 | 5.94 |
| MY 16 | 189.00 | 194.00 | 5.00 | 6.03 | 2.94 | 1.0 | 8.97 |
| MY 17 | 407.75 | 410.00 | 2.25 | 6.78 | 1.53 | 0.7 | 8.31 |
| MY 17 | 469.31 | 472.46 | 3.15 | 4.13 | 1.29 | 2.8 | 5.42 |
| MY 19 | 154.00 | 158.00 | 4.00 | 5.22 | 0.61 | 1.2 | 5.83 |
| MY 20 | 339.00 | 342.00 | 3.00 | 5.31 | 0.55 | 0.5 | 5.86 |
| MY 20 | 363.10 | 372.00 | 8.90 | 5.31 | 1.28 | 0.6 | 6.59 |
| MYR 22 | 60.00 | 63.00 | 3.00 | 4.82 | 1.46 | 0.5 | 6.27 |
| MYR 24 | 42.00 | 44.00 | 2.00 | 5.87 | 2.67 | 1.3 | 8.54 |
| MYR 25 | 59.00 | 61.00 | 2.00 | 5.46 | 1.94 | 1.5 | 7.40 |
| MYR 28 | 99.00 | 100.00 | 1.00 | 5.56 | 0.17 | 1.4 | 5.73 |
| MYR 28 | 103.00 | 104.00 | 1.00 | 4.55 | 0.80 | 1.2 | 5.35 |
| MYR 29 | 61.00 | 62.00 | 1.00 | 6.72 | 0.64 | 2.1 | 7.36 |
| MYR 41 | 99.00 | 100.00 | 1.00 | 5.50 | 1.71 | 0.5 | 7.21 |
| MYR 43 | 66.00 | 67.00 | 1.00 | 5.30 | 1.77 | 0.5 | 7.07 |
| MYR 43 | 69.00 | 70.00 | 1.00 | 5.44 | 2.93 | 0.5 | 8.37 |
| MYR 45 | 62.00 | 66.00 | 4.00 | 4.52 | 1.76 | 0.8 | 6.28 |
| MYR 48 | 66.00 | 67.00 | 1.00 | 4.43 | 1.41 | 0.5 | 5.84 |
Importantly, the geological sequence at Myrtle is similiar to that found 20km north at the McArthur River deposit; the uppermost unit is the Reward Dolomite, which is underlain by the Barney Creek Formation (which includes the HYC Pyritic Shale and the W-Fold Shale), the footwall unit is the Teena Dolomite.
At Myrtle, and at McArthur River, base-metal (zinc and lead) mineralisation occurs within the HYC Pyritic Shale and the mineral bearing sequence occurs over an extensive area (Figure 2).
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Figure 2
Figure 3
Figure 4
Figure 5