20km east of Flin Flon, Manitoba, 63K13
Gold and Cu-Zn-Ag-Au
Alberts Gold Deposit
- Non 43-101 historic resource of 400,000 tonnes of 7.5 g/t gold,
- Values up to 125 g/t gold, best intersection 10.89 g/t gold over 9.0 m
- Open in all directions within, 500 m strike length to a depth of 325 m
- a large low grade envelope up to 52 m wide
- Could provide feed to other gold mines such as Tartan or Puffy.
- Drill Ready
- New VTEM 35 Airborne Electromagnetic Geophysical Surveys flown in 2010
- Contains other high grade prospects and significant showings
Geographic Location of Alberts Lake Gold Deposit
14 claims totaling 1,291 ha. Sufficient credits to hold
1 claim totaling 65 ha. Sufficient credits to hold
15 claims totaling 1,356 ha
100 % Copper Reef Mining Corporation
Cameco Corp is entitled to a 15% NPI
Figure 2: Topographic Map Shows the Road Access to the Alberts Lake Gold Project Area
From the city of Flin Flon taking the # 10 Provincial Highway south, distance about 15 km, then turn left on North Star Road and continue until the southern tip of Flintoba Lake is reached via Flintoba River. Make a left turn before the Flintoba River Bridge to a drill road going north, see figure 2.
Location Map Alberts Group (yellow)
Note: The two red blocks within Alberts are separated as non basemetal claims
Alberts Lake Property
Geology and Mineralization
The Alberts Lake property is located in the central portion of the Flin Flon Greenstone Belt. The property belongs to the large Alberts Claim Group owned by Copper Reef Mining Corporation. Regionally, the property occupies the center portion of the Sourdough Bay fault block consisting primarily of felsic volcanic rocks with some minor gabbro intrusions. The gold deposit itself is hosted in medium-grained gabbro along the northeast trending Alberts Lake shear zone.
The 2011 exploration project at Alberts Lake Gold Deposit comprises of twinning four of the highest gold intercepted drillholes resulted from the 1985-1986 Granges Exploration drilling. During this program a HQ Diameter of the core was used instead of BQ size core used in 1985-1986 drilling program to see if core size made a difference in grades. It did not except in the veins.
Copper Reef Mining Corporation drilled four twin holes: Al-40, Al-57, Al-61, and AL-72 (see drillhole plan map enclosed).The results from the twin holes were quite encouraging. In addition, two infill drillholes were drilled in the east part of the deposit. Assaying was primarily done over 0.5m intervals across the entire shear zone and analyzed for Au and Ag.
Twelve drill holes were completed in the Wally Zone, a narrow (2 metre wide), but high grade parallel structure to north and east of the Alberts Lake Zone. The Albert's Lake Gold Deposit digital database has been completed, consisting of: the entry of 113 holes for drill hole collars (local grid), down hole surveys, geology, over 5,150 assays, Cross sections have been completed at 25m spacing over a strike length of 500m.
Alberts Lake Gold Deposit
Figure 5: A Slice of Central Flin Flon Belt Showing Alberts Lake Structural Region. (Courtesy of Manitoba Geological Survey)
The Albert's Lake Gold Project is part of the Albert's Lake claim group. The gold project consists of a steeply dipping shear zone comprised of quartz-carbonate-chlorite sericite schists and quartz veins, striking N35E with an average horizontal width of 40m. The shear zone is sandwiched between a footwall diorite and hanging wall felsic volcanic rocks. Sulphide content from the logs appears low, with 1-5% pyrite, minor chalcopyrite and minor arsenopyrite.
The gold zone was drilled with 53 holes by Granges Exploration in 1985 and 1986 over a strike length of almost 500m and to a depth of 350m vertical. Assaying was primarily done over 0.5m intervals across the entire shear zone and analyzed for Au and Ag.
The Albert's Lake Gold Project digital database has been completed consisting of the entry of 53 holes for drill hole collars (local grid), down hole surveys, geology and over 5,150 assays. Cross sections have been completed at 25m spacing over a strike length of 500m. Compositing of lower grade Au and Ag values were completed to study the potential of a low grade bulk mining scenario. A long section of the main zone with Au g/t composites multiplied by the interval length in meters was also made to evaluate possible trends in mineralizing controls. The following observations were made:
- The shear zone is very consistent geologically and structurally, appearing as one main zone between a diorite body and felsic volcanics. The average horizontal width is 40 meters.
- Consistent low grade Au (1-2 g/t) and Ag (2-4 g/t) values appear as wide discreet zones within the shear zone, except for narrow high grade sections within the lower grade envelopes.
- Although they are higher grade zones (5-20 g/t Au) within the lower grade envelope, they appear to be discontinuous and variable.
- The low grade mineralization is quite consistent along strike and on dip. The Au x m contoured map however doesn't really show any plunge/structural controls to mineralization.
- The dip angle and width of the gold zone is amenable to underground bulk mining methods, but the grade does not support economic viability
- A low grade open pit scenario is possible, but is restricted by the following criteria: The horizontal width of 40m would only allow mining to about the 100m vertical level assuming a waste: ore mining ratio of no more than 3:1, overall pit slopes of 55 degrees and a strike of only 400m thus far.
Based on the above criteria, there would be approximately 2.7mt of ore at an average grade of 1.4 g/t Au equivalent grade for approximately 120,000 ounces.
Alberts Lake Drillhole Plan
Alberts Lake Drillhole Plan
The Albert's Lake Gold Deposit digital database has been completed, consisting of:
- the entry of 113 holes for drill hole collars (local grid),
- downhole surveys,
- over 5,150 assays.
Cross sections have been completed at 25m spacing over a strike length of 500m.
east west trending shear zone
- The east west trending shear zone appears to be very consistent geologically and structurally, as noted in one of the main zones between a diorite body and felsic volcanic rocks in a well mineralized hydrothermally altered system.
- Mineralization seems to be consistent throughout the shear zone.
- Low-grade values appear as wide discreet zones within the shear zone.
- Some high-grade sections are found within the lower grade envelopes.
Gold mineralization is quite consistent along strike and on dip of the major structure.
- The Au x m contoured map (see long section enclosed) shows an open exploration target at depth in the central portion of the main zone.
- Based on the above criteria as of now, the Alberts Lake Deposit contains approximately 2.7 mt of ore at an average grade of 1.4 g/t Au, equivalent grade for approximately 120,000 ounces (not NI 43-101 compliant).
Previous Work on Gold
Trenching on Wally and Alberts Lake gold zones.
9 drill holes targeted on Gwynne gold zone by Cominco.
Ground magnetic and VLF surveys, soil and humus sampling, mapping and overburden drilling.
Granges drilled 7 holes on the Gwynne gold zone, two holes on the Wally gold zone, and two holes on the Cell Lake gold zone. Late 1980's: 76 drill holes targeted on the Alberts Lake gold deposit by Granges.
Two holes drilled on Alberts Lake shear zone north of Alberts Lake gold zone (Granges). Acquisition by Aur Resources Inc. of 100% interest in the Alberts Lake property from Granges Inc.
Gold exploration program on the Alberts Lake Property that consisted of (i) field examination and rock sampling of the Wall, Alberts Lake, and Gwynne gold zones, (ii) a test soil geochemical traverse over the Alberts Lake gold zone, and (iii) compilation of existing data.
Other Gold Zones
Alberts Lake Gold Occurrences and Surface
Alberts Lake Area Geology and Gold Zones
Other Gold Zones
Lion Zone (Lew Property): Geological resources of 58,500 tonnes at 22.28 g/t Au (38,600 oz Au). Deposit still open.
21 Au occurrence (Lew Property: 1.17 g/t Au over 3.8 metres from quartz veined Baker Patton rhyolite in LW-21.
Alberts Lake Deposit (Alberts Property): Values up to 125 g/t were noted. The best intersection was 10.89 g/t Au over 9.0 metres at 225 metres vertical depth. Approximately 60 holes have been drilled into the zone. It has been tested over a 500 metres strike length, and to a depth of 400 metres. Estimated reserves of 400,000 tonnes at 7.3 g/t Au seem high.
Wally Occurrence (Alberts Property): 100 tonnes at 16 g/t Au removed. Trenches samples returned 11.24 g/t Au and 54 g/t Ag over 1.2 metres. A grab sample of mineralized rubble from the same trench returned 37.24 g/t Au and 61 g/t Ag. Two Granges drill holes which tested the vein obtained shallow (< 18 metres vertical) intersections of 5.32 g/t Au over 0.5 metres (AL-75) and 3.00 g/t Au over ¼ metres (AL-77).
Lew Zone (Lew Property): High grade Au mineralization occurs (up to 137 g/t over 0.9 metres -- V.G. noted in log) in several thin sections, but they appear to be discontinuous pods.
Gwynne Zone (Alberts Property): Surface samples from the shear yield high grade gold values (3.54 g/t Au up to 124.1 g/t Au). Values up to 3.0 metres at 10.39 g/t Au, 18.0 g/t Ag were yielded from drilling. A long section of the zone shows the mineralization has a shallow plunge to the southeast.
Cell Lake Zone (Alberts Property): The zone has a local strike length of 30.5 metres. Values between 1/5 g/t Au and 44 g/t Au have been reported. Two holes were drilled to test the zone, but it appears they were spotted too far north and too far back to intersect the quartz veins.
Recommendations and Target Evaluation :
Proposed Work 2014
- Complete a 43-101 on the Alberts Lake Zone
- Additional potential may lie in the footwall volcanic rocks, as very few holes were drilled for any meaningful distance into the footwall and there may be parallel zones. A structural and geology map should be completed to look for those areas where structurally prepared rocks could host larger, higher grade deposits