History
Zafranal was first discovered by Teck in early 2003 as part of a generative exploration program within the northern segment of the Southern Peru Porphyry Copper Belt. Exploration efforts by Teck to date include detailed mapping, rock sampling, 5km of AMT geophysical surveying over four lines, and orientation EM geophysical surveying.
36 holes (32 RC and 4 diamond drill holes) were drilled between 2004 and 2005 totaling 11,805m. The main deposit was drilled at wide drill spacing of 250m-400m. Limited diamond drilling by Teck returned higher copper grades than RC drilling in the same location.
Several other excellent prospective porphyry copper-gold prospects (Sicera Sur, Sicera Norte and Campanero) have been recognized within the Zafranal property boundary, with very little exploration carried out to date on most of them. Work at the Campanero and Sicera prospects included AMT and gradient-array IP surveys (50 line-km total) and 18 exploratory RC drill holes totaling 4,899m.
Zafranal Drilling Highlights from 2003-2005
Supergene: Chalcocite, Covellite
| Historical RC and Diamond Drill Holes |
From (m) |
To (m) |
Interval (m) |
Cu%* | Au (g/t) |
| ZFDDH04-001 (twin of RC-008) Incl. |
113 119 |
280 229 |
167 110 |
1.00% 1.25% |
0.14 0.16 |
| ZFDDH04-002 | 136 | 228 | 92 | 0.94% | 0.08 |
| ZFDDH04-004 | 75 | 152 | 77 | 1.80% | 0.21 |
| ZFRC04-007 | 120 | 190 | 70 | 1.08% | 0.25 |
| ZFRC04-008 Incl. Incl. |
106 110 116 |
348 278 226 |
242 168 110 |
0.65% 0.80% 1.02% |
0.09 0.10 0.24 |
| ZFRC04-009 | 174 | 268 | 94 | 0.60% | 0.06 |
| ZFRC04-010 Incl. Incl. |
114 164 164 |
268 268 208 |
154 74 44 |
0.52% 0.73% 0.90% |
0.06 0.06 0.06 |
| *0.2%Cu cut-off | |||||