PROJECTS - Don Sixto (La Cabeza)
Linking the Cuello and Central Vein Zones - "The Silver Connection"
Exeter routinely assays for silver all drilling and channel samples that assay greater than 1.0 g/t gold (0.03 oz/ton), using HF-HNO3-HCIO4 digestion, HCL leach and AAS (by ALS Chemex). The silver content is especially significant in the Cuello zone, where individual silver assays have exceeded 500 g/t (14.50 oz/ton).
Although a silver resource was calculated in 2005 by Hellman & Schofield Pty Ltd of Australia, utilizing the ordinary kriging method of estimation, Exeter was unable to report the results. According to CIM Mineral Resource and Mineral Reserve Definitions, only an indicative order of magnitude estimate of the silver resource was possible as the silver data set was only a fraction of that of the gold data set. The report can be viewed on SEDAR.
Significant silver grades have also been seen in assays of drilling, channel, and rock chip samples from the Central Vein Zone. This data, together with Exeter's structural interpretation of the area, indicates the Central Veins and the Cuello Veins are linked and can now be explored as a single target area. The linkage is illustrated on the schematic geological map below.
Significant silver results are as follows:
| Drill Hole/ Channel | Zone | From (m) | To (m) | Width (m) | Silver grade (g/t) |
|---|---|---|---|---|---|
| LCD-75 | Labio West | 29.1 | 32.0 | 2.9 | 315 |
| including | 30.0 | 30.7 | 0.7 | 900 | |
| LCD-76 | 45.2 | 45.8 | 0.6 | 45 | |
| Channel 1 | 10 | 12 | 2 | 30 | |
| Channel 2 | 18 | 22 | 4 | 340 | |
| including | 18 | 20 | 2 | 550 | |
| Channel 4 | 36.5 | 38.5 | 2 | 35 | |
| Channel 5 | 2.0 | 9.3 | 7.3 | 45 | |
| including | 2.0 | 4.4 | 2.4 | 65 | |
| Rock Chip 12 | Labio South | 6 | 7.5 | 1.5 | 100 |
| and | 17 | 19 | 2 | 20 | |
| Rock Chip 13 | 10 | 16 | 6 | 80 | |
| and | 26 | 30 | 4 | 10 | |
| Rock Chip 14 | 2 | 8 | 6 | 80 | |
| and | 22 | 26 | 4 | 25 | |
A comprehensive program of re-assaying sample pulps will be undertaken this year to establish a silver database of sufficient size and quality to allow the reporting of an initial estimated silver resource for the Cuello and Central Vein zones, and, in part, the Luna zone.
AMEX : XRA
TSX Venture : XRC
FRANKFURT : EXB