Roble 1 Anomaly
The Roble 1 Anomaly is located within the Las Naves mining concession, 1.25 kilometres north from the El Gallo Anomaly. Mineralization is hosted along a shear zone that is 3.6m wide consisting of a hydrothermal breccia with massive to semi massive clasts of chalcopyrite, galena, sphalerite and pyrite in an argillic matrix. The clasts range from 0.05m to 1m in diameter.
Significant surficial geochemical results include:
- 3.6 meters at an average of 15.12 g/t gold, 258 g/t silver, 0.56% copper, 3.25 % lead and 5.25 % zinc,
- including 0.93 meters averaging of 35.29 g/t gold, 630 g/t silver, 1,36 % copper, 7.98 % lead and 12.80 % zinc.
A total of 4 rock chip channels were sampled, with lengths between 0.85 and 1.73 meters wide. Values ranged from 0.21 to 53.00 g/t gold, 1.10 to 695 g/t silver, 0.02% to 17.8 % copper, 0.014 to 10.05 % lead and from 0.05 to 26.70 % zinc.
The El Roble 1 anomaly was recently drill tested (news release April 3, 2008) with five drill holes for a total of 1,014.8 metres. Results at Roble 1 have confirmed the presence of volcanic massive sulphides (VMS) in the Las Naves Central area and conform to the geological model the company has developed. These results build on the theory that a new VMS district has been discovered. The anomaly is located 1,200 metres north from the El Gallo anomaly and 400 metres north from the El Domo discovery.
Significant results from the Roble 1 drill program include:
- 62.15 metres averaging 0.20 grams per tonne gold; 4.2 grams per tonne silver and 0.70 per cent zinc.
The following is a description of all holes drilled:
Drill hole 29, from 8.9 to 25 metres and from 86 to 108 metres, is a hydrothermal breccia with silica-argillic alteration, in a matrix of pyrite-sphalerite. There is a fault between 9 and 25 metres.
| Hole No. | From | To | Length (m) | Au (g/t) | Ag (g/t) | Pb (%) | Zn (%) |
|---|---|---|---|---|---|---|---|
| CURI-07-029 | 11 | 19 | 8 | 1.71 | 31 | - | - |
| 87 | 107 | 20 | 1.0 | 29.04 | 0.19 | 0.41 |
Drill hole 25, from 100.8 to 106.9 metres, is a shear zone with strong pyrite-sphalerite dissemination. Between 106.9 and 185 metres is a hydrothermal breccia with a pyrite-chalcopyrite and sphalerite matrix.
| Hole No. | From | To | Length (m) | Au (g/t) | Ag (g/t) | Pb (%) | Zn (%) |
|---|---|---|---|---|---|---|---|
| CURI-07-025 | 100.8 | 162.95 | 62.15 | 0.20 | 4.2 | - | 0.70 |
| Include: | 125 | 129.4 | 4.4 | 0.28 | 2.7 | 0.25 | 2.08 |
| Include: | 150 | 162.95 | 12.95 | - | 1.4 | - | 1.02 |
Drill hole 21, from 122.4 to 145.2 metres and from 173 to 199.7 metres, is a hydrothermal breccia plus stockwork of quartz-sphalerite with traces of chalcopyrite (sulphides range from 5 to 10 per cent).
| Hole No. | From | To | Length (m) | Au (g/t) | Ag (g/t) | Pb (%) | Zn (%) |
|---|---|---|---|---|---|---|---|
| CURI-07-021 | 6 | 10.66 | 4.66 | 0.14 | 5.8 | - | 0.14 |
| 121.52 | 139 | 17.48 | - | 5 | - | 0.65 | |
| 174 | 182 | 8 | 0.14 | 1.6 | - | 0.40 |
Drill Hole 20, from 13.4 to 16.2 metres and from 22 to 24.2 metres is a hydrothermal breccia with silica clasts, and traces of pyrite and chalcopyrite in the matrix.
| Hole No. | From | To | Length (m) | Au (g/t) | Ag (g/t) | Pb (%) | Zn (%) |
|---|---|---|---|---|---|---|---|
| CURI-07-020 | 11.59 | 13.84 | 2.25 | 0.13 | 58.2 | 0.18 | 0.47 |
| 16.90 | 18.38 | 1.48 | 0.27 | 9.3 | - | - |
Drill hole 19, from 14 to 19 metres, is a hydrothermal silica breccia with traces of sulphides comprising pyrite, chalcopyrite and sphalerite in the matrix.
| Hole No. | From | To | Length (m) | Au (g/t) | Ag (g/t) | Pb (%) | Zn (%) |
|---|---|---|---|---|---|---|---|
| CURI-07-019 | 13.71 | 19 | 6.3 | 0.19 | 6.6 | 0.25 |