Mineral Deposit Inventory for Ontario

Ministry of Energy, Northern Development and Mines

Deposit: MDI42D16SW00034

General

Commodities

Primary Commodities: gold, zinc

Secondary Commodities: copper

Location

Township or Area: Lorna Lake Area

Latitude: 48° 51' 37.53"    Longitude: -86° 14' 15.05"

UTM Zone: 16    Easting: 555926   Northing: 5412220    UTM Datum: NAD83

Resident Geologist District: Thunder Bay South

NTS Grid: 42D16SW

Point Location Description: Grab Samples for float on shoreline

Location Method: field visit

Source Map Accuracy: Within 10 metres

Access Description: By Helicopter from Marathon.

Exploration and Mining History

1993: Hemlo discovered the Smoke Lake Float boulder while prospecting and sampling. 1999: P. Moses conducted trenching and sampling. 2000: D. Michano conducted prospecting, trenching, and sampling. 2001: Freewest Resources optioned the property and conducted reconnaissance geology, prospecting, and till sampling. 2002: Freewest Resources discovered the Super G vein 12 m north of the Smoke Lake Float boulders and conducted prospecting, till sampling, geological mapping, trenching, sampling, and magnetometer and IP surveys. 2003: Freewest drilled 2 DDH totalling 98 m. 2004: CanAlaska Ventures Ltd. conducted soil sampling, geological mapping, and prospecting, and drilled 1 DDH totalling 185 m. 2011: Entourage Metals Ltd. conducted prospecting and sampling. 2012: Entourage drilled 5 DDH totalling 984.6 m. 2018: Canadian Orebodies drilled 13 DDH totalling 2098.3 m.

Assessment Work on File

Geology

Province: Superior

Subprovince: Wawa

Belt: Schreiber-hemlo

Geological Age: Archean   

Geology Comments

12/24/2002 (B R Schnieders) - The Smoke Lake Float was originally discovered by Hemlo Gold Mines Inc. in 1993. High-grade visible-gold bearing , quartz vein float boulders on the north shore of Smoke Lake. Grab samples of assays collected by the prospectors assayed up to 0.942 ounce per ton. Additional prospecting dicovered the Beaver Pond Float (555925/5412145), and the Moses Float (556471/5412235). Recent stripping and trenching by Freewest Canada Ltd. has discovered numerous berdrock exposures in the Smoke Lake area.

Mineral Deposit Lithology

Mineralization

Mineralization Comments

03/14/2018 (T Pettigrew) - The Super G Occurrence was discovered 12 m north of the Smoke Lake Float boulders during 2002 trenching. The discovery trench was the first of a series excavated in the search for the source of the high-grade quartz boulders comprising the Smoke Lake Float occurrence. The Super G Vein occurs within a narrow, discrete, shear zone crosscutting moderately to strongly silicified, variably mineralized, mafic volcanic amphibolite near the eastern margins of a system of strong lineaments that form a wide, swamp and overburden-filled, roughly north-south-striking, linear valley. It consists of a white to rusty, locally deeply weathered quartz, locally quartz-carbonate vein with a 13 m strike-length, a 5 to 30 cm width, a strike of 189 degrees, and a westerly dip of 59 to 60 degrees. The narrower portions of the vein were once carbonate-bearing and are now very rusty, deeply weathered, and strongly limonitic with grey to light grey quartz, 1 to 2% disseminated pyrite, and considerable fine, visible Au (VG). The VG usually occurs as tiny flakes within the limonitic portions of the vein; however, fine flecks do occur near chloritic slips within less weathered areas. The thicker parts of the vein are white to locally pale grey (near chloritic slips), are locally slightly rusty, and contain up to 1% disseminated pyrite, but no observed VG. The first 2 grab samples of the VG-rich portion of the vein contained 846.4 gpt Au and 19.10 ppm Ag, and 391.4 gpt Au and 13.8 ppm Ag, respectively. Another sample taken from the thicker, VG-poor portion of the vein contained 35.99 gpt Au and 0.44 ppm Ag. A total of 24 channel and channel grab samples were taken with samples of the vein containing between 6.47 and 229.70 gpt Au and up to 9.86 ppm Ag. Samples of the adjacent, sheared and silicified wallrock contained between 137 ppb and 6.03 gpt Au. A close comparison of Super G Vein samples and Smoke Lake Float samples strongly suggests that the Super G Vein is not the source of the float boulders. There are some gross similarities; however, the appearance and mode of occurrence of the VG grains are quite dissimilar, the colour of the quartz within the Super G Vein is much more variable, and the Smoke Lake Float boulders were originally too large to have come from the narrow Super G Vein. Trenching north and east of the Super G Vein, between the swamp-filled lineament to the west and the eastern edge of the bedrock ridge to the north and east, did not encounter any other veins. The strong silicification of the wallrock, the persistent nature of the shear hosting the vein, and the similar orientations of the vein and the strong, wide structure located immediately to the west suggest that more veins may exist within the lineament as well as beneath Smoke Lake. This is supported by the presence of the high-grade Smoke Lake Vein near the western edge of the lineament, 180 m to the northwest, and the ILD and Double Deuce occurrences located along the western edge of the lineament approximately 800 m to the north (AFRI 42D16NE2011). DDH SL-03-01 cut a 3.33 m section of fine-grained slightly banded interflow sediment containing up to 35% sphalerite, pyrite and pyrrhotite. Samples of this material assayed up to 7321 ppm Zn and 627 ppm Cu. Also intersected were quartz veins containing flecks of visible gold, which assayed 10,566 ppb Au over 0.29 m. DDH SL-03-02 assayed 1493 ppb Au over 0.16 m, from 24.17-24.33 m (AFRI 42D16SE2008). DDH BR-2018-002 contains 133.2 g/t Au over 2.0 m, including 443.0 g/t Au over 0.6 m in the Super G vein. In DDH BR-2018-003, three quartz-veined zones were encountered. The Super G vein was observed between 130.5-131.5 m, with 30-40% quartz veins within sheared mafic volcanics. 1-2% pyrite along with trace amounts of galena and chalcopyrite were noted along with two small specks of visible gold. Assays returned up to 34.6 g/t Au over 0.5 m (Canadian Orebodies Dec. 18, 2018 press release).

Mineral Deposit Details

References

Publication - Smoke Lake Property; In: Report of Activities, 2009, Resident Geologist Program, Thunder Bay South District, p. 30-38

Publication Number: OFR6246    Date: 2010

Author: Scott, J.F., Campbell, D.A., Lockwood, H.C., Brunelle, M.R., and Pelaia, R.

Publisher Name: OGS

Publication - Report of Activities, 2002, Resident Geologist Program, Thunder Bay South District, p. 16

Publication Number: OFR6112    Date: 2003

Author: Schneiders, B.R., Scott, J.F., Smyk, M.C., and O’Brien, M.S.

Publisher Name: OGS

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Ministry Contact Information

For detailed information regarding this mineral deposit please contact the Thunder Bay South Resident Geologist District Office