Corvus Gold Expands High-Grade, Bulk Tonnage, Stockwork Zones at Yellowjacket System
Vancouver, B.C……..Corvus Gold Inc. (“Corvus” or the “Company”) – (TSX: KOR, OTCQX: CORVF) has now received complete assays from seven holes drilled through the Yellowjacket vein system. Previously reported results (NR13-22, NR13-24 and NR13-25) from these holes were prioritized samples and only included the narrow main vein intervals with visible gold. Complete assay results, which now include silver numbers, demonstrate that the combined near surface, higher-grade, bulk tonnage, vein and stockwork zones are consistently 20-50 metres wide with average grades ranging from 1 to 7 g/t gold and 14 – 32 g/t silver (Table 1). Significantly, the higher silver grades in this area, which run between 3 to 15 times greater than the gold content, may have a beneficial effect on anticipated production costs when included in the updated North Bullfrog Preliminary Economic Assessment scheduled for Q1 2014.
Corvus has now confirmed the continuity of the Yellowjacket vein system over a strike length of 650 metres to a nominal depth of approximately 120 metres. A hole drilled late this season tested the system a further 50 metres down dip and intersected a broad zone of stockwork veining as well as an 8 metre thick banded vein at approximately 170 metres vertical depth with visible gold and silver (assays pending). This deeper intersection is encouraging for the possibility of extending the system at depth. The Yellowjacket system remains open to the north and has yet to be explored to the south.
In addition to the vein mineralization, drilling has encountered a different style of disseminated and veined mineralization at depth in a number of holes, including 42 metres @ 0.94 g/t gold in NB-13-357 (Table 1). Several holes have ended in this type of mineralization and so its extent is not constrained at the present time but may represent what could be a large potential target beneath the currently defined oxide deposit.
Jeff Pontius, Chief Executive Officer, stated: “The broad intervals of shallow, higher-grade, bulk tonnage mineralization returned in these holes continue to build continuity and size for the Yellowjacket deposit. The more we see of this new discovery, the more possibilities emerge for discovery of a new, large Bullfrog type high-grade gold and silver system. With the recent encouraging deeper vein intersection, it appears we could be entering a new area of the system which may hold potential for higher grades and significant expansion of our North Bullfrog District scale discovery. The Corvus team is focused on analyzing these new results and will be launching a follow-up exploration program early next year to expand what is emerging as a major new, higher-grade, bulk tonnage, Nevada gold discovery.”
Yellowjacket Vein System
The main Yellowjacket vein consists of 1-12 metres of solid quartz vein with complex multi-stage infill. This vein is surrounded in the hangingwall and footwall by stockwork veining where thin grey translucent quartz veinlets are found. In general, this stockwork zone is defined when the density of these quartz veinlets is greater than 10% quartz veins with peripheral zones containing 5-10% quartz veinlets. These zones are, in turn, surrounded by the typical disseminated low-grade mineralization similar to that previously defined in the Sierra Blanca deposit located immediately to the west.
The continuity of mineralization in the main stockwork is variable, with hangingwall thicknesses ranging from 7 to 50 metres and footwall thicknesses ranging from 4 to 30 metres. Average grades range from 0.4 to 15 g/t gold. The thicknesses reported are apparent thicknesses since the geometry has not yet been fully defined.
Table 1: Significant intercepts* from recent core holes at Yellowjacket.
(Reported drill intercepts are not true widths. At this time, there is insufficient data with respect to the shape of the mineralization to calculate its true orientation in space.)
|
Hole ID |
From (metres) |
To (metres) |
Interval (metres) |
Gold (g/t) |
Silver (g/t) |
Comments |
| NB-13-354 |
25.0 |
40.5 |
15.6 |
0.11 |
0.64 |
Disseminated |
|
69.8 |
89.3 |
19.6 |
0.15 |
0.68 |
Disseminated | |
|
93.5 |
113.4 |
19.9 |
0.17 |
1.09 |
HW Peripheral Stockwork | |
|
113.4 |
130.5 |
17.1 |
0.82 |
1.93 |
HW Stockwork | |
|
130.5 |
135.3 |
4.8 |
16.86 |
74.50 |
Main Vein | |
|
135.3 |
145.7 |
10.4 |
2.63 |
9.88 |
FW Stockwork | |
|
|
|
32.3 |
3.76 |
15.17 |
Vein + Main Stockwork | |
|
145.7 |
181.3 |
35.6 |
0.42 |
2.19 |
FW Peripheral Stockwork | |
|
182.6 |
192.9 |
10.4 |
0.25 |
1.10 |
Disseminated | |
| NB-13-355 |
36.4 |
67.5 |
31.1 |
0.14 |
0.75 |
Disseminated |
|
67.5 |
80.8 |
13.4 |
0.20 |
0.86 |
HW Peripheral Stockwork | |
|
80.8 |
96.7 |
15.9 |
1.01 |
2.62 |
HW Stockwork | |
|
96.7 |
102.1 |
5.4 |
13.77 |
76.14 |
Main Vein | |
|
102.1 |
108.7 |
6.6 |
1.47 |
22.56 |
FW Stockwork | |
|
27.9 |
3.59 |
21.57 |
Vein + Main Stockwork | |||
|
108.7 |
143.2 |
34.5 |
0.21 |
1.35 |
FW Peripheral Stockwork | |
|
143.2 |
182.3 |
39.1 |
0.14 |
0.80 |
Disseminated | |
| NB-13-356NB-13-356 |
22.4 |
39.1 |
16.7 |
0.15 |
0.45 |
Disseminated |
|
67.5 |
104.0 |
36.5 |
0.16 |
0.81 |
Disseminated | |
|
104.0 |
123.8 |
19.9 |
0.50 |
1.69 |
HW Peripheral Stockwork | |
|
123.8 |
131.1 |
7.2 |
15.74 |
25.21 |
HW Stockwork | |
|
131.1 |
135.3 |
4.3 |
17.39 |
93.92 |
Main Vein | |
|
135.3 |
153.2 |
17.9 |
0.84 |
5.45 |
FW Stockwork | |
|
29.4 |
6.91 |
23.15 |
Vein + Main Stockwork | |||
|
153.2 |
201.5 |
48.3 |
0.69 |
1.97 |
FW Peripheral Stockwork | |
|
219.1 |
249.7 |
30.5 |
0.59 |
0.98 |
Disseminated/Vein | |
| NB-13-357 |
17.1 |
36.5 |
19.4 |
0.18 |
0.58 |
Disseminated |
|
61.3 |
75.7 |
14.4 |
0.18 |
0.84 |
Disseminated | |
|
91.0 |
126.7 |
35.6 |
0.13 |
1.01 |
HW Peripheral Stockwork | |
|
126.7 |
176.4 |
49.7 |
0.41 |
3.49 |
HW Stockwork | |
|
207.8 |
219.0 |
11.2 |
0.32 |
0.88 |
Disseminated/Vein | |
|
219.0 |
219.9 |
0.9 |
0.12 |
160.00 |
Acanthite Vein | |
|
245.5 |
287.7 |
42.2 |
0.94 |
19.67 |
Disseminated/Vein | |
| NB-13-358 |
22.8 |
32.1 |
9.3 |
0.25 |
0.80 |
HW Peripheral Stockwork |
|
32.1 |
51.4 |
19.3 |
0.82 |
3.08 |
HW Stockwork | |
|
51.4 |
52.7 |
1.3 |
10.73 |
189.01 |
Main Vein | |
|
52.7 |
56.4 |
3.7 |
0.40 |
10.98 |
FW Stockwork | |
|
24.3 |
1.30 |
14.38 |
Vein + Main Stockwork | |||
|
56.4 |
65.8 |
9.5 |
0.21 |
1.41 |
FW Peripheral Stockwork | |
|
65.8 |
116.7 |
50.9 |
0.16 |
0.55 |
Disseminated | |
|
121.3 |
150.3 |
29.0 |
0.14 |
0.49 |
Disseminated | |
|
160.9 |
163.1 |
2.2 |
0.30 |
10.40 |
Liberator Structure | |
|
191.4 |
213.9 |
22.5 |
0.19 |
0.58 |
Disseminated | |
|
213.9 |
226.7 |
12.8 |
0.55 |
1.03 |
Disseminated/Vein | |
| NB-13-359 |
12.1 |
18.4 |
6.3 |
0.15 |
0.56 |
Disseminated |
|
18.4 |
68.9 |
50.5 |
0.39 |
1.14 |
HW Peripheral Stockwork | |
|
68.9 |
90.7 |
21.8 |
3.43 |
21.48 |
HW Stockwork | |
|
90.7 |
103.3 |
12.6 |
8.53 |
81.16 |
Main Vein | |
|
103.3 |
134.0 |
30.7 |
0.42 |
1.81 |
FW Stockwork | |
|
65.1 |
3.00 |
23.80 |
Vein + Main Stockwork | |||
|
134.0 |
175.4 |
41.4 |
0.32 |
0.60 |
FW Peripheral Stockwork | |
|
188.5 |
200.9 |
12.4 |
0.35 |
0.89 |
Disseminated/Vein | |
|
206.8 |
235.9 |
29.1 |
0.39 |
0.88 |
Disseminated/Vein | |
| NB-13-360 |
16.9 |
62.7 |
45.8 |
0.28 |
1.54 |
HW Peripheral Stockwork |
|
62.7 |
82.0 |
19.2 |
0.41 |
2.05 |
HW Stockwork | |
|
82.0 |
91.6 |
9.6 |
6.34 |
132.78 |
Main Vein | |
|
91.6 |
109.4 |
17.8 |
0.93 |
10.96 |
FW Stockwork to TD | |
|
46.7 |
1.83 |
32.44 |
Vein + Main Stockwork |
Figure 1: Location of Yellowjacket drill holes. Red collars and traces indicate holes reported in this news release. Blue indicates holes for which assays are pending. Black indicates previously released results.
Drillhole NB-12-138 was the Yellowjacket discovery hole
About the North Bullfrog Project, Nevada
Corvus controls 100% of its North Bullfrog Project, which covers approximately 68 km² in southern Nevada just north of the historic Bullfrog gold mine formerly operated by Barrick Gold Corporation. The property package is made up of a number of leased patented federal mining claims and 758 federal unpatented mining claims. The project has excellent infrastructure, being adjacent to a major highway and power corridor.
Qualified Person and Quality Control/Quality Assurance
Jeffrey A. Pontius (CPG 11044), a qualified person as defined by National Instrument 43-101, has supervised the preparation of the scientific and technical information that form the basis for this news release and has approved the disclosure herein. Mr. Pontius is not independent of Corvus, as he is the CEO and holds common shares and incentive stock options.
The work program at North Bullfrog was designed and supervised by Russell Myers (CPG 11433), President of Corvus, and Mark Reischman, Corvus Nevada Exploration Manager, who are responsible for all aspects of the work, including the quality control/quality assurance program. On-site personnel at the project log and track all samples prior to sealing and shipping. Quality control is monitored by the insertion of blind certified standard reference materials and blanks into each sample shipment. All resource sample shipments are sealed and shipped to ALS Chemex in Reno, Nevada, for preparation and then on to ALS Chemex in Reno, Nevada, or Vancouver, B.C., for assaying. ALS Chemex’s quality system complies with the requirements for the International Standards ISO 9001:2000 and ISO 17025:1999. Analytical accuracy and precision are monitored by the analysis of reagent blanks, reference material and replicate samples. Finally, representative blind duplicate samples are forwarded to ALS Chemex and an ISO compliant third party laboratory for additional quality control.
About Corvus Gold Inc.
Corvus Gold Inc. is a resource exploration company, focused in Nevada and Alaska, which controls a number of exploration projects representing a spectrum of early-stage to advanced gold projects. Corvus is focused on advancing its 100% controlled Nevada, North Bullfrog project towards a potential development decision and continuing to explore for new major gold discoveries. Corvus is committed to building shareholder value through new discoveries and leveraging noncore assets via partner funded exploration work into carried and or royalty interests that provide shareholders with exposure to gold production.
On behalf of
Corvus Gold Inc.
(signed) Jeffrey A. Pontius
Jeffrey A. Pontius,
Chief Executive Officer
Contact Information:
Ryan Ko
Investor Relations
Email: info@corvusgold.com
Phone: 1-888-770-7488 (toll free) or (604) 638-3246 /Fax: (604) 408-7499
