- 900 ha property under option by Forte Minerals from Candente Copper Corp.
- Total of 13 historic, relatively shallow diamond drill holes completed on the project since 1977
- Enrichment grades up to 0.8% Cu
- Primary grades up to 0.4% Cu and 0.15 g/t Au
- Miocene Porphyry Cu-Au with enriched and primary mineralization potential beneath a 1.3 x 0.5 km leached cap
Don Gregorio (Porphyry Cu-Au)
Summary
Forte Minerals can acquire a 60% interest in Don Gregorio by:
- Cash payments of US$500,000 over 3 years.
- Total of 10,000 m diamond drilling over 3 years upon receipt of drill permits.
Exploration Target
- 2.6 x 1.7 km porphyry Cu-Au exploration target outlined from geochemistry, geophysics, and drilling.
- Hole S9 (eastern-most drill hole):
- 45m of 0.56%Cu (Secondary)
- 55m of 0.39%Cu (Primary)
- EOH 100m - Open to the east and depth.
- Historical drilling focussed on one section corridor.
- Limit of phyllic alteration is interpreted to coincide with strong chargeability (>20 mV/V).
- Enrichment and leach cap are partially removed by erosion.
- Geochemical response controlled by erosion and post-mineral cover characteristics.
- Strong geochemistry not necessarily above porphyry centre.
- Potential for stronger enrichment zones exists on the northern side of the target.
Notes
-
The source of the historical geochemical assay intervals provided is from technical report “NATIONAL INSTRUMENT 43-101 F1 TECHNICAL REPORT ON THE LA HUACA Cu-(Au-Mo) PROJECT” dated April 23rd, 2011, and prepared by Michael J. Thicke (P.Geo. #34487), VP Exploration for Candente Copper Corp. The information suggests that porphyry Cu-(Au) mineralization may be present in this area. The drill core and geochemical sample reject materials from these drill holes are not available for re-assaying purposes. For that reasons, the historical Cu and Au assay results have not been verified by the Company.
Historical Drilling
- Drilling was focussed on one section corridor.
- Exploration potential is open to the north and south on the section.
- Portions of the leached and enrichment profile removed by erosion.
Hole |
From |
To |
Cu % |
Au g/t |
Zone |
---|---|---|---|---|---|
LH-01 |
0 |
14 |
|
|
Leached |
|
14 |
54 |
0.564 |
0.211 |
Secondary |
|
54 |
300.2 |
0.142 |
0.145 |
Primary |
LH-02 |
0 |
44 |
0.303 |
0.146 |
Secondary |
|
44 |
237.5 |
0.154 |
0.065 |
Primary |
LH-03 |
0 |
42 |
0.412 |
0.133 |
Secondary |
|
42 |
300.1 |
0.265 |
0.07 |
Primary |
LH-04 |
0 |
36 |
0.438 |
0.25 |
Secondary |
|
36 |
153.3 |
0.321 |
0.153 |
Primary |
S1 |
0 |
25 |
0.466 |
|
Secondary |
|
25 |
75 |
0.291 |
|
Primary |
S4 |
0 |
25 |
0.794 |
|
Secondary |
|
25 |
80 |
0.371 |
|
Primary |
S6 |
0 |
45 |
0.052 |
|
Leached |
|
45 |
80 |
0.433 |
|
Secondary |
S7 |
0 |
15 |
0.001 |
|
Leached |
|
15 |
107.5 |
0.281 |
|
Secondary |
- Exploration potential remains open at depth and in all directions
- All holes encountered Copper and Gold mineralization (when analysed)
- S8 & S9 encountered significantly high grades of secondary and primary copper mineralization.
- The region to the east and north remains highly prospective and be a focus of the upcoming drilling campaign.
- Drilling target area delineated with - - - -
Notes
-
The source of the historical geochemical assay intervals provided is from technical report “NATIONAL INSTRUMENT 43-101 F1 TECHNICAL REPORT ON THE LA HUACA Cu-(Au-Mo) PROJECT” dated April 23rd, 2011, and prepared by Michael J. Thicke (P.Geo. #34487), VP Exploration for Candente Copper Corp. The information suggests that porphyry Cu-(Au) mineralization may be present in this area. The drill core and geochemical sample reject materials from these drill holes are not available for re-assaying purposes. For that reasons, the historical Cu and Au assay results have not been verified by the Company.
Notes
-
The source of the historical geochemical assay intervals provided is from technical report “NATIONAL INSTRUMENT 43-101 F1 TECHNICAL REPORT ON THE LA HUACA Cu-(Au-Mo) PROJECT” dated April 23rd, 2011, and prepared by Michael J. Thicke (P.Geo. #34487), VP Exploration for Candente Copper Corp. The information suggests that porphyry Cu-(Au) mineralization may be present in this area. The drill core and geochemical sample reject materials from these drill holes are not available for re-assaying purposes. For that reasons, the historical Cu and Au assay results have not been verified by the Company.
Analysis and Recommendations
Future drilling needs to be upslope and above the blanket in order to determine the full thickness and size of the blanket, which currently grades 0.4-0.6% Copper and 0.15g/t Gold; Primary copper grades are in the 0.3-0.35%+ Cu.
The better grade, potassically altered rocks have not been penetrated by historical drilling. Total tonnage target ranges from 250-500 million tonnes of 0.3-0.5% Cu.
Forte ranks this investment in the same class as Constancia and Zafranal except Don Gregorio contains significant gold mineralization ~ 0.15 g/t Au. Shallow historical drilling <100m ended in copper mineralization and suggest potential for a larger hypogene mineralization at depth.