- Published: 18 June 2020
- Written by Editor
Great Bear Discovers New High Grade "Arrow" Zone: 19.32 g/t Gold Over 2.10 m, Within 3.00 g/t Gold Over 15.00 m
Drill hole locations and results are provided in Figure 1, and in Table 1, respectively.
Drill Results Highlights:
New drill hole REG-002 was completed 1.2 kilometres to the west-northwest of the Hinge zone. Highlights include:
-
19.32 g/t gold over 2.10 metres, including 50.00 g/t gold over 0.75 metres, within a broader interval of 3.00 g/t gold over 15.00 metres. Figure 2, Figure 3, Figure 4 and Figure 5.
-
Three mineralized intervals were intersected along 435.55 metres of core length.
-
Gold mineralization was present at significant changes in rock type. In particular, high-grade gold within quartz veins was best developed at the contact between a high iron tholeiitic pillow basalt and a massive basalt. This is the same type of geological contact that is highly mineralized at the Hinge and Dixie Limb zones, however the Arrow zone occurs at a different stratigraphic position.
- The Arrow zone veins strike 280 degrees and dip steeply to the northeast, similar to the Hinge zone veins. The regional D2 fold axis that is adjacent to the Hinge, Dixie Limb and Arrow zones extends for approximately 3.7 kilometres to the west-northwest from the Hinge Zone, before being terminated by a granitic batholith. The Arrow zone marks the westernmost drilling along this trend to date.
New drill hole REG-001 was completed to the northeast of RE-002 on the same drill fence. It intersected anomalous mineralization returning 0.51 g/t gold over 2.20 metres.
Oriented structural data suggests the mineralized interval in REG-001 is the same mineralization intersected at the top of drill hole REG-002 (1.09 g/t gold over 1.00 metres and 1.80 g/t gold over 1.30 metres), as shown on Figure 2. The vertical distance between the upper intercepts in REG-002 and REG-001 is approximately 300 metres. These results suggest significant potential vertical continuity in the Arrow zone, as has been observed at the other zones across the Dixie property.
The Arrow zone was targeted by projecting established gold mineralization trends observed within the LP Fault, Dixie Limb and Hinge zones along strike into the discovery area. While all three of these zones exhibit different geological controls and alteration signatures, they also all have a population of quartz veins with an approximately east-west orientation which often contain high-grade gold. The trends from the three zones intersect in several areas (Figure 1) near the Arrow zone and for this reason two exploratory drill holes were completed to cross two of these projected trends, resulting in the new discovery.
Table 1: Current drill results. REG-002 intersected the new Arrow zone.
Drill Hole |
From (m) |
To (m) |
Width* (m) |
Gold (g/t) |
|
REG-001 |
414.10 |
416.30 |
2.20 |
0.51 |
|
REG-002 |
28.10 |
29.10 |
1.00 |
1.09 |
|
and |
81.00 |
82.30 |
1.30 |
1.80 |
|
and |
451.50 |
466.50 |
15.00 |
3.00 |
|
including |
459.00 |
465.00 |
6.00 |
7.03 |
|
and including |
462.90 |
465.00 |
2.10 |
19.32 |
|
and including |
462.90 |
463.65 |
0.75 |
50.00 |
* |
Widths are drill indicated core length, as insufficient drilling has been undertaken to determine true widths at this time. Average grades are calculated with un-capped gold assays, as insufficient drilling has been completed to determine capping levels for higher grade gold intercepts. Average widths are calculated using a 0.10 g/t gold cut-off grade with up to 3 m of internal dilution of zero grade. |
Hole ID |
Easting |
Northing |
Elevation |
Dip |
Azimuth |
REG-001 |
455916 |
5634199 |
368 |
-55 |
220 |
REG-002 |
455737 |
5634007 |
364 |
-55 |
220 |
The Dixie Project hosts two principle styles of gold mineralization:
-
High-grade gold in quartz veins and silica-sulphide replacement zones (Dixie Limb, Hinge and Arrow). Hosted by mafic volcanic rocks and localized near regional-scale D2 fold axes. These mineralization styles are also typical of the significant mined deposits of the Red Lake district.
- High-grade disseminated gold with broad moderate to lower grade envelopes (LP Fault). The LP Fault is a significant gold-hosting structure which has been seismically imaged to extend to 14 kilometres depth (Zeng and Calvert, 2006), and has been interpreted by Great Bear to have up to 18 kilometres of strike length on the Dixie property. High-grade gold mineralization is controlled by structural and geological contacts, and moderate to lower-grade disseminated gold surrounds and flanks the high-grade intervals. The dominant gold-hosting stratigraphy consists of felsic sediments and volcanic units.
QA/QC and Core Sampling Protocols
Qualified Person and NI 43-101 Disclosure
Chris Taylor, President and CEO
Cautionary note regarding forward-looking statements
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SOURCE Great Bear Resources Ltd.