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Gold, Nickel and VMS (NT)

Project Status

Research, consultation, reconnaissance mapping, ground surveys, and samples all confirm the initial geological assessment of the significance of the discovery.
  • 8221 line-kilometers of airborne geophysics survey (Resolve frequency-domain EM and Mag, and VTEM time-domain EM and Mag) completed in 2008.
  • At least 100 VTEM airborne targets documented for geology, alteration, mineralization and setting.  
  • 1375 rock samples collected to date.
  • Four high-priority gold areas identified and high-potential targets for base metals, silver and nickel.

Drilling of two prospective nickel targets confirms VTEM conductors caused by highly-conductive sulfide minerals.

Following up on the late-2007 discovery of a sample which assayed 0.66 oz/ton gold, geologists returned to Area 35, four kilometers from our twenty-person ZIP base camp. A new sample taken 300 m south of the 2007 discovery sample assayed 0.81 oz/ton. Most of the area is covered by glacial till and only about 10% of the area features exposed bedrock. However this was sufficient to see that the geology consists of ultramafic and mafic volcanics, rhyolite volcanics and sediments – a similar geologic setting to the Red Lake gold camp in Ontario.  

Gold values were found to occur in a shear zone with quartz which cuts mafic volcanics.  A silicate-sulfide exhalite horizon (Banded Iron Formation) was identified  20-30 meters west of the shear zone and a contact between the mafic volcanics and sedimentary rocks is nearby.  

An airborne magnetic anomaly associated with this north-northwest trending gold area can be traced for a kilometer both north and south of the discovery. A subtle electromagnetic anomaly is within the magnetic anomaly.

The second new gold discovery (Area 8) was made near the shore of a small lake ten kilometers east of the ZIP base camp, in an area with sparse bedrock exposure.  The first grab sample assayed 1.245 oz/ton gold and a 0.55 meter channel sample in the same area returned 0.58 oz/ton gold. A sample collected across the lake, 125 meters to the north, assayed 0.18 oz/ton gold.

The geologic qualities of this area are quite similar to the Abitibi Greenstone Belt and the Yellowknife Greenstone Belt equivalents.  

The third new area is located near the southern property boundary. Here, mineralization has been traced intermittently for five kilometers. A sample collected in the northern part of the zone, consisting of mafic volcanics near their contact with sediments, and containing arsenopyrite, returned 0.039 oz/ton gold. To the south, the zone features significant acicular arsenopyrite in a mafic volcanic outcrop bordered by a siliceous exhalite horizon.   There is very little bedrock exposed in the area but a weak electromagnetic conductor is coincident with a shear zone which extends through both of the above showings.  The gold potential of this area is regarded as highly-promising.

The fourth area, located near the northern property boundary, was investigated by Noranda in 1984 following receipt of the results of a grab sample assaying 0.52 oz/ton gold.

Mapping and ground geophysical surveys by Noranda in 1988/1989 traced a Banded Iron Formation for four kilometers. Though outcrop exposure is poor, Noranda described the iron formation as being 25 to 40 meters wide and consisting of indurated amphibole-rich rock with a friable, garnetiferous, biotite-rich material. Channel samples yielded values of up to 0.12 oz/ton gold and two grab samples from boulders yielded 0.34 oz/ton and 0.52 oz/ton gold.  The source of these two high grade boulders was not found.

Geologists from Aurora Geosciences Ltd. (“Aurora”) of Yellowknife examined the area in 2008 and their best sample (from a large frost heaved block of Banded Iron Formation) contained 0.102 oz/ton gold and 11.95% arsenic (occurring as acicular arsenopyrite). The crew also identified a second, larger Banded Iron Formation carrying anomalous gold values west of the area previously investigated by Noranda.  

Aurora concluded that this area of mafic volcanics and Banded Iron Formation, also near a sedimentary contact, warrants significant further work. Banded Iron Formations are well recognized hosts for gold both in the Slave Craton and in greenstone belts of the Superior Province in Ontario and Quebec.


PGB - Nickel

The Company is exploring for magmatic nickel deposits, which consist mainly of the sulphide mineral pyrrhotite (composed of iron and sulfur and at times magnetic and having a bronze color). It is pyrrhotite that is most commonly responsible for high conductance anomalies.


Nickel sulphides (mainly pentlandite, an iron-nickel-sulfur mineral) are often associated with pyrrhotite and when they occur in sufficient quantities, make economic ore deposits.  Geophysics then can detect areas of high conductance which are commonly, but not always, associated with pyrrhotite and the pyrrhotite may be associated with nickel sulphides minerals. This is the risk associated with nickel exploration.


The positive exploration results to date are supportive of the potential for economic nickel deposits.  As  discussed in GGL's second quarter 2008 report, the Company is also encouraged by the VTEM results for VMS mineralization as indicated by geophysical responses over known sulphide mineralization.


Condor Consulting Inc. of Lakewood, Colorado, a group of geophysicists with extensive experience with nickel deposits, made a preliminary assessment of the VTEM data and target selection. and identified a number of moderate to high conductance anomalies.


Limiting the selection of potential VTEM targets prospective for nickel to only those areas that the Company’s geologists have been able to associate with komatiites, we arrived at eight high to moderate-high conductance VTEM targets. 


These targets vary from one half to two kilometers in length including the high conductance EM conductor “61W” reported on in the June 12, 2008 News Release



PGB - Polymetallic Volcanogenic Massive Sulphides (VMS)  

There are a number of selected VTEM targets that may reflect VMS mineralization and these are being and have been evaluated both by geophysical modeling and in the field by our geological teams.


One of several high conductance VTEM targets (Target "TZA") lies within an area of previous exploration dating back to 1977.  Non 43-101 compliant grab samples were reported to have assayed up to 11.3% Zn,  3.34% Cu, 165g/t Ag and 4.78g/t Au.  This mineralized zone was described as being 4 to 5m thick and was traced intermittently for a strike length of 2km.


Another VTEM target, "TZA", has been modeled as a shallow, narrow linear target, and is characterized as a circular deeper high conductance conductor divided into two parts, the larger of which is over 1km in diameter.  This is a significant anomaly in an area of known mineralization and as such is a priority target for VMS.


The gold and VMS 2008 exploration program was contracted out to Aurora Geosciences Ltd. (“Aurora”) of Yellowknife.  Aurora’s geological consultants have many years of experience working on the Slave Craton and are familiar with both the geology and mineralization of the area.  We were fortunate to have their expertise on this project.


One of the more significant assay results received to date (at October 24, 2008) includes a sample taken from a boulder assayed 25.0% Zn.  The boulder was traced to its source at the edge of a swamp.


The most advanced of the potential VMS deposits “ATA 1000” is a moderately well-exposed mineral zone previously tested by shallow drill holes in the 1960s.  The  VTEM geophysical survey indicated the potential for mineralization below the shallow drill holes.  Samples taken this year from various locations along the weathered and gossanous outcrop reported values of 4.46% Cu and 1.15 oz/ton Ag; 2.64% Cu, 5.45% Zn and 1.2 oz/ton Ag; 5.15% Cu and 1.68% Zn.  This is a large area of mineralization with size potential and will require a drill program to delineate it.


Our geologists and consultants are in the process of compiling data and reporting all of the data from the 2008 field season; not all assays have been received at the time of writing (as of October 24, 2008). 


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