Forester Lake Gold Property History
The first discovery in the area of the Property was made by a First Nations prospector who discovered a mineralized quartz vein on the north shore of Wesley Lake (Robertson, 1941). Two assays of the material gave results of 176.23 g/t Au and 182.74 g/t Au. The discovery caused a staking rush in the area. Mineral exploration has been carried out since that time, with major periods of activity following the 1940s staking rush and the Musselwhite discovery in the 1970s and 1980s. A review of assessment files indicates that 78 diamond drill holes have been drilled on the property to date, for a total of 8,236m.
In 1941, the Hooker Syndicate carried out reconnaissance geological mapping in the north part of claim PA 5261098 and PA 4229328, the south part of PA 4240696 and the southeastern quarter of PA 4241269 (Robertson, 1941). A showing just south of the creek feeding Sage Lake from the east, in the south central part of PA 4240696 was reported to have returned grab sample assay results varying from 0.69 g/t Au to 118.63 g/t Au. The showing consisted of a "shear zone localized along an inclusion of basalt in gabbro diorite." The orientation of the mineralization is not known.
In 1959 Rio Tinto Canadian Exploration completed ground electromagnetic and magnetic surveys on a grid cut in the southeast corner of claim PA 4241269 (AFRI 53A05NW9432). Rio subsequently drilled two short diamond drill holes, totaling 87.2m, to test electromagnetic conductors. Only one partial drill log is available, and hole locations are not shown on the geophysical maps.
In 1961 Rio Tinto Canadian Exploration carried out geological mapping in the southwestern quarter of claim PA 4261098 (AFRI 53A05NW0042). Several grab samples were collected during mapping, a few of which returned low values of gold and silver. Two samples assayed in the range of 1 g/t Au. No further work was recommended for the claims.
INCO drilled 8 diamond drill holes, totaling 435.6m, in 1961 and 1962 along the south central part of claim PA 4240696 (AFRI 53A05NW0045). Minor pyrite and pyrrhotite was reported in various rock types and, in hole 15787, pyrrhotite, pyrite and arsenopyrite were noted in quartz vein material. No assay values were reported on the drill logs and no location maps are in the file.
Rio Tinto Canadian Exploration carried out a reconnaissance compilation and mapping program over a large area, including the Neawagank Lake Area, in 1962 (AFRI 53B08NE9408).
In 1963 Rio Tinto drilled 6 short diamond drill holes, totaling 106.7m, just north of the west end of Sage Lake in the southeast quarter of claim PA 4241269. The drilling intersected locally graphitic argillite, chert, mafic volcanics, biotite schist, ultramafic rocks and oxide facies iron formation. No significant gold assays were reported.
In 1971 Canadian Nickel Co. Ltd. drilled 3 diamond drill holes in the east central part of claim PA 4211303 or the southeast quarter of PA 4211302 (AFRI 53A10NE0005). Drill hole location maps were poor and holes could not be accurately located. The drilling intersected mafic and intermediate volcanic flows, locally graphitic felsic to intermediate tuffs and coarse pyroclastics, iron formation horizons, and minor schist and quartz-feldspar porphyry. Up to 15% pyrrhotite and 10% pyrite was observed in iron formation, up to 8% pyrrhotite was noted in graphitic tuff and up to 15% arsenopyrite, 8% pyrrhotite and 5% pyrite was noted in agglomeratic rock. No assay results were provided.
In 1981 H. J. Hodge carried out a geological mapping and prospecting program on a claim group covering the western half of claim PA 4260443, the northwestern part of PA 4260444, the southeastern corner of PA 4261100 and the northeastern corner of PA 4251900 (AFRI 53A05NW0048). A rediscovery of previous trenches noted "a number of gold bearing shear zones with quartz veins and arsenopyrite in gabbro. Values up to 0.42 opt Au (14.40 g/t) were obtained on samples taken from old pits. The widest zone exposed is 31 ft. (9.45m), which averaged 0.04 opt (1.37 g/t) Au." The showing is denoted as the Neawagank Lake Showing in this report. Detailed VLF-EM and magnetometer surveys were recommended, as well as 12 diamond drill holes, to test gold zones. Details regarding shear directions, mineralization widths and strike lengths is not known.
In 1981 Canadian Nickel Company Ltd. carried out a ground magnetometer survey on a large grid cut over all but the eastern end of the Property (AFRI 53A05NW0035). Several anomalies, thought to be caused by iron formation horizons or ultramafic rocks, were identified. A follow-up electromagnetic survey was recommended.
Later that year Canadian Nickel Company Ltd. drilled 5 diamond drill holes, totaling 781m, in the central and western parts of claim PA 4240696 (AFRI 53A05NW0023). Major rock types included mafic volcanic flows, mafic and felsic tuffs, oxide and sulphide facies iron formation. Quartz- and quartz-calcite veining, pyrite, pyrrhotite, chalcopyrite and arsenopyrite mineralization were widespread, with locally up to 12% pyrrhotite reported in mafic volcanics and tuffs, up to 15% pyrrhotite in oxide iron formation, up to 20% pyrrhotite in quartzite and up to 15% pyrrhotite noted in chlorite schist. No assays were reported.
In 1981 and 1982 Canadian Nickel Company Ltd. completed geological, magnetometer and VLEM surveys, and drilled an additional 7 diamond drill holes, totaling 806.3m, in the central part of claim PA 4240696 and the southeastern corner of PA 4241269 (AFRI 53A05NW0017, 53A05NW0020, 53A05NW0022, Perry, 1982). Major rock types intersected included mafic volcanic flows and tuffs, felsic tuffs, oxide and sulphide facies iron formation, chert, and locally graphitic argillite, with minor diorite and biotite-chlorite schist. Mineralization was fairly widespread, consisting of pyrite, pyrrhotite, chalcopyrite, arsenopyrite, quartz and quartz-carbonate veining. Locally, up to 70% pyrrhotite was reported in sulphide facies iron formation, up to 20% pyrrhotite in oxide facies iron formation, up to 15% pyrrhotite in graphitic sediments, up to 20% pyrrhotite in chert, and up to 10% in felsic crystal tuff. Assay results were reported for five of the holes. Significant results are presented on Table 2, below. Following completion of the drill program it was recommended that no further work be done on the Property.
In 1982 Canadian Nickel Co. Ltd. completed six diamond drill holes in the northwest quarter and southeastern part of claim PA 4211302 and the southwestern quarter of PA 4240699 (AFRI 53A05NW0032). A variety of rock types was intersected in the holes, the major types being mafic volcanic flows, mafic and felsic tuffs, oxide and sulphide facies iron formation, chert, quartzite and pelitic sediments, and garnet-biotite, chlorite, chlorite-actinolite and biotite-sericite-chlorite schists. Mineralization observed included quartz and quartz-carbonate veining, pyrrhotite, pyrite, chalcopyrite, sphalerite and grunerite in some iron formations. Locally up to 15% pyrrhotite was noted in mafic volcanics, cherts and some clastic sedimentary horizons, and up to 30% pyrrhotite was observed in sulphide iron formations. No assay results were reported.
In 1984 Tex. U.S. Oil and Gas Inc. (AFRI 53A05NW9707) completed ground magnetometer and VLF-EM geophysical surveys over an area covering a large part of the eastern portion of the Forester Lake property. An induced polarization survey was also carried out over a portion of the area where the Neawagank Lake occurrences had been discovered by H. Hodge in 1982 (see AFRI 53A05NW0024 and 53A05NW0027). Both the mag and VLF surveys were successful in tracing the area iron formation horizons, and the IP survey identified chargeability anomalies over the area of gold showings. Additional IP work, and drilling of chargeability anomalies, was recommended.
The company then completed six diamond drill holes, totaling 600.8m, to test chargeability anomalies associated with the Neawagank Lake showing in the southeastern quarter of claim PA 4230008 (AFRI 53A05NW0024 and 53A05NW0027). Gold values were associated with silicified shear zones cutting quartz gabbro, mineralized by minor amounts of pyrrhotite and arsenopyrite. Significant assays are listed on Table 2 below. As a result of the drilling additional claims were staked to extend the property to the east and additional geological mapping, geochemical and electromagnetic surveys, and further diamond drilling were recommended.
Based on the 1984 recommendations of Tex U.S. Oil and Gas Inc., magnetic and VLF-EM surveys were carried out on the newly staked claims to the east in 1986 (AFRI 53A05NW0011). The survey covers present claim PA 4260445. Magnetics traced the iron formation horizons eastward across the Property and several conductive axes were identified by the VLF. Additional detailed geophysics, geological mapping and diamond drilling were recommended.
In 1986 Tex U.S. Oil & Gas Inc carried out magnetometer and VLF-EM surveys covering the southeastern and northeastern portions of claims PA 4261100 and PA 5241900, respectively, the western part of PA 4260443 and the southwestern part of PA 5230008 (Hodge 1986). Further detailed geophysical surveys, geological mapping, prospecting and geochemical sampling were recommended prior to drilling.
Additional drilling was carried out by Tex U.S. Oil & Gas Inc. in 1986 to follow up on the 1984 recommendations (AFRI 53A05NW0550, 53A05NW0025). Three holes followed up previous drilling on the Hodge showings and three more tested iron formation targets in the east part of the property. In total 6 holes were drilled, for a total of 859.84m, in the northern part of claim PA 4260445. Significant assay results from the program are listed on Table 2, below. All are from the Hodge showing follow-up drilling. Additional geological mapping, prospecting, soil geochemistry and geophysical surveys were recommended by the report's authors.
In 1987 Van Horne Gold Explorations Inc. carried out a program of geological mapping, humus sampling and rock geochemistry in an area covering the southeastern and northeastern portions of claims PA 4261100 and PA 4251900, respectively, the western part of PA 4260443 and the southwestern part of PA 4230008 (Joliffe 1987). Samples collected from the Neawagank Lake showing trench area assayed between 1.71 g/t and 61.37 g/t gold. Details regarding the geometry and orientation of the mineralization are not known. The report's author noted that: "A number of areas on the property show a combination of geological, geophysical and geochemical features that favour the localization of gold mineralization." An induced polarization survey over selected areas and 2,300m of diamond drilling were recommended to further test the Property.
Also in 1987 628823 Ontario Ltd. carried out geological, humus and rock sampling programs in an area covering most of the central part of the current Property from Wesley Lake extending west to the east half of claim PA 4246699 (Joliffe 1987). More extensive humus sampling and magnetometer and VLF-EM surveys on easterly-striking grid lines were recommended, followed by a minimum of 2,000m of diamond drilling.
In 1987 Power Explorations Inc. drilled 7 holes, totaling 986.9m, to test iron formation horizons centered around the common boundaries of claims PA 4211302, 4211303 and 4222594 (AFRI 53A05NW0010). Oxide and sulphide facies iron formation, associated with a sedimentary package consisting of pelitic and garnetiferous sediments, chert, mudstone and greywacke, are intercalated within a mafic volcanic package. Minor quartz-feldspar porphyry intrusions were noted. Some significant gold values were associated with the mafic volcanics and garnetiferous oxide facies iron formation (see Table 2, below). Visible gold was noted in two locations.
In 1988 Esso Minerals Canada mapped a large portion of the southwestern third of the current property (AFRI 53A05NW9430) and also conducted magnetometer and VLF-EM surveys in the same area (AFRI 53A05NW0007). Geochemical soil and humus sampling was carried out on an area in the southwestern corner of claim PA 4222658. A few small gold-arsenic geochemical anomalies were identified. Seven diamond drill holes were recommended to test interpreted folds in sulfide iron formation.
In 1988 and 1989 Santa Maria Resources Ltd. carried out a program of magnetometer, VLF-EM and geological surveys, as well as prospecting and lithogeochemical rock sampling. In addition a 16 hole, 1,586.2m, diamond drilling program was completed (AFRI 53A05NW0004). Purpose of the drilling was: "to test for possible extensions of the auriferous zones discovered in the 1987 drill program and investigate additional geophysical targets (mainly magnetic/conductive trends associated with folds and possible alteration related to the emplacement of gold mineralization in iron formation)." Significant assay results from the drill program are listed on Table 2 below. Additional mag surveys in selected areas and a further 1800m of diamond drilling were recommended to test additional targets on the Property.
Homestake Canada Ltd. carried out a diamond drilling program in the winter of 1991 consisting of 6 holes, totaling 746.8m, in the southwestern part of the Property (AFRI 52A05NW9446, 53A05NW9628). The purpose of the drilling was to test coincident magnetic and VLF-EM anomalies associated with iron formation horizons. While all holes intersected iron formation units, no significant gold assays were returned. It was noted by the report's author that: "notable in the drilling program was the very high percentage of granitoid lithologies encountered, in excess of 50% of the drilling completed on the Property. Clearly the Property is very proximal to the margin of the North Caribou greenstone terrane, and the degree to which the granitoid intrusive rocks have disrupted and digested the terrane precludes any degree of continuity in the targeted interformational exhalitive horizons, even if significantly elevated gold values were being encountered." It was recommended by the Homestake authors that no further work be carried out on the Property.
In 1994--95 Placer Dome Canada Ltd. carried out a program of geological mapping, prospecting, and lithogeochemical rock sampling on two grids, the NE Grid covering portions of claims PA 4261110 and 4230008, and the SC Grid, covering the southeastern part of claim PA 4222594, eastern part of PA 4211303, central and eastern part of PA 4211302 and south half of PA 4251899 (AFRI 53A05NW0003). An induced polarization and resistivity survey was subsequently completed over the NE Grid during 1995 (AFRI 53A05NW0001). Some west to west-northwest striking sub-parallel anomalies were detected. Recommended soil and humus geochemical surveys were completed on the NE and SC Grids in 1995 (AFRI 53A05NW0012). In general, it was reported that gold values were very low throughout and there was a negative correlation with arsenic and gold. The most significant geochemical anomalies were in the western part of the SC Grid. A detailed magnetometer survey of that area was recommended to better define diamond drill targets.
Romios Estates Ltd. carried out a helicopter-borne magnetic survey on a small property along the north shore of Sage Lake, in the east central part of claim PA 4241269 and the west central part of PA 4240696 in 1996 (AFRI 53A05NW0018). Ground magnetic and horizontal loop electromagnetic surveys were carried out the following year (AFRI 53A05NW0022). A few HLEM conductor axes were identified. Follow-up prospecting along the north shore of Sage Lake was recommended.
In the same year Romios completed a horizontal loop electromagnetic survey on a property east of Wesley Lake covering the southeast part of claim PA 4261100, the northeast part of PA 4251899, northwestern PA 4260443 and the southwestern corner of PA 4230008 (AFRI 53A05NW0008). Two east-northeasterly striking conductive axes identified were believed to be caused by iron formation. A ground magnetometer survey was carried out in 1997 (AFRI 53A05NW021). More detailed magnetometer and HLEM surveys, to be carried out on more closely spaced grid lines, as well as an induced polarization survey, were recommended to better define drill targets.
In 2009 Benton Resources Corp. flew a helicopter-borne aeromagnetic survey over the entire Property (Sims 2009). The survey was flown along north-striking flight lines, with a line spacing of 100m and a nominal terrain clearance of 30m.
Table 2: Forester Lake Property, Historic Drilling, Significant Assays *.
||From (m) ||To (m) ||Interval (m) ||Au (g/t) ||Comments |
|Can. Nickel 57740 ||97.35 ||97.45 ||0.10 ||8.92 ||Sulphide facies iron formation. 40% po-py-cp in dark grey chert matrix. |
|Can. Nickel 57741 ||0.50 ||16.2 ||Reported by Perry 1982 |
|Tex US TN-84-1 ||15.33 ||15.80 ||1.47 ||1.37 ||Silicified, sheared quartz gabbro. 1% po + asp + py. |
|62.79 ||65.23 ||2.44 ||4.77 ||Silicified, sheared quartz gabbro with chlorite – epidote alteration. 2% asp and 1% po. Composite of 3 samples. |
|131.98 ||135.94 ||3.96 ||3.43 ||Silicified, sheared quartz gabbro. Quartz veining, 1% po + asp + py. Composite of 4 samples. |
|Tex US TN-84-2 ||53.64 ||55.47 ||1.83 ||3.33 ||Silicified quartz gabbro, 1% asp – po. Composite of 2 samples. |
|Tex US TN-84-3 ||68.28 ||70.41 ||2.13 ||1.27 ||Quartz gabbro. Po and asp as fracture-fillings. Composite of 3 samples. |
|Tex US TN-84-6 ||2.13 ||3.96 ||1.83 ||1.13 ||Quartz gabbro. Composite of 2 samples. |
|42.06 ||43.13 ||1.07 ||1.65 ||Quartz gabbro. Blue quartz stringer with 1% po and asp. |
|62.48 ||63.40 ||0.92 ||11.01 ||Quartz gabbro. 1 cm qtz-calcite stringer with 1% po and asp. |
|Tex US TN-86-1 ||5.24 ||6.13 ||0.89 ||13.03 ||Weakly silicified diorite. 1 – 2% asp. |
|12.98 ||14.81 ||1.83 ||1.37 ||Weakly silicified diorite. 1 – 2% po – asp. |
|28.99 ||31.12 ||2.13 ||5.93 ||Silicified diorite. Thin qtz veins, 1 – 3% – asp.|
|57.06 ||58.22 ||1.16 ||2.06 ||Silicified diorite. Qtz stringers, 1 – 7% asp – po. |
|81.26 ||82.78 ||1.52 ||1.37 ||Moderately to weakly sheared. Tr asp, po. |
|Tex US TN-86-2 ||22.68 ||27.34 ||4.66 ||3.89 ||Locally silicified diorite. 1 – 2% asp and trace po. Composite of 5 samples. |
|28.74 ||30.88 ||2.14 ||1.57 ||Locally silicified diorite. Quartz veins, locally 15 – 20% asp. Composite of 2 samples. |
|33.56 ||35.66 ||2.10 ||1.87 ||Locally silicified diorite. Quartz veining, 2 to 10% asp – po as fracture-fillings. Composite of 2 samples. |
|37.34 ||41.45 ||4.11 ||1.80 ||Locally silicified diorite. 3 cm quartz-biotite vein with 2 – 4% pyrrhotite. Composite of 3 samples. |
|60.05 ||62.33 ||2.28 ||3.61 ||Silicified diorite. Thin quartz veins, 1 – 2% asp – po. Composite of 2 samples. |
|72.18 ||74.16 ||1.98 ||2.22 ||Diorite. Quartz veins, 7 – 10% asp and tr – 1% po. Composite of 2 samples. |
|74.98 ||76.90 ||1.92 ||2.06 ||Silicified diorite. Trace sufides. Composite of 2 samples. |
|Power NK-8703 ||31.94 ||34.50 ||2.56 ||2.06 ||Mafic volcanics. 0.43m qtz-ankerite vein with VG, and minor po. Composite of 3 samples (includes 7.20 g/t over 0.43m). |
|Power NK-8707 ||24.99 ||26.52 ||1.53 ||12.34 ||Garnetiferous oxide-facies iron formation. 24 cm quartz vein with VG. |
|94.49 ||96.01 ||1.52 ||1.13 ||Garnetiferous oxide-facies iron formation. |
|Santa Maria NK-8802 ||17.47 ||18.78 ||1.31 ||2.23 ||Brecciated oxide facies iron formation, 2 – 15% po, tr – 7% asp, tr cp. Composite of 3 samples. |
|Santa Maria NK-8810 ||63.49 ||64.98 ||1.49 ||1.85 ||Interbedded pelitic sediments and oxide facies iron formation, 1 – 10% po, trace py and cp. |