Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42L05NE00013

Record: MDI42L05NE00013

General

Commodities

Primary Commodities: Copper, Zinc

Secondary Commodities: Silver, Gold

Location

Township or Area: Summit Lake Area

Latitude: 50° 24' 5.32"    Longitude: -87° 37' 28.75"

UTM Zone: 16    Easting: 455607   Northing: 5583457    UTM Datum: NAD83

Resident Geologist District: Thunder Bay North

NTS Grid: 42L05NE

Point Location Description: Center of Teck Trench from NI 43-101 report

Location Method: Data Compilation

Access Description: The property is accessed by following Highway 11/17 west of the City of Thunder Bay to Highway 11 at Nipigon, Ontario. One then travels north on Highway 11 for approximately 120 km turning north onto the Kinghorn Road, 7km east of Jellicoe. One then travels approximately 125 km north where the Kinghorn Road intersects the southern portion of the Marshall Lake property. Further access from this point is by ATV or on foot. The property is about 45 km from Aroland First Nations Reserve. Access from the reserve is down the Ogoki road about 55 km (45 km by air) and then by boat on Marshall Lake.

Exploration History

1954: Teck Corp. discovered a high-grade Cu/Zn showing to the south of Gripp Lake. 1955: Teck Corp. carried out mag & EM surveys followed by a 20-hole DDH program. Claims were allowed to lapse because the demand for base metals had declined. 1960-2: Jacobus Mining Corp. Ltd. staked claims. 1961: Teck Corp. carried out a 12-hole DDH program. 1962: Jacobus carried out a 64 DDH program totalling 3306 m and conducted EM and mag surveys. Min-Ore Mines Ltd. carried out an 8-hole DDH program totalling 382 m. 1965: Marshall Lake Mines Ltd. acquired the property from Jacobus and Min-Ore and carried out a 5-hole DDH program. 1968: Kendon Copper Mines carried out a DDH program and an IP survey. 1969: NWT Copper Mines Ltd. acquired the property from Kendon Copper and carried out a 13-hole DDH program, EM, IP and magnetometer surveys, trenching and prospecting, and a property report. 1970: feasibility study by A. S. Bayne. 1971: Teck Corp. did EM, mag and self-potential surveys. 1974: Giant Gripp Mines Inc. carried out an EM survey. 1976: St. Josephs Exploration completed a mapping program as well as a magnetic survey and soil sampling. 1978: Imperial Oil completed a DDH program. 1981: Corporation Falconbridge Copper carried out a ground mag survey, VLF-EM and soil geochemistry. 1983: Corporation Falconbridge Copper carried out a 3-hole DDH. 1992: Giant Gripp Mines Inc. did a DDH program. 1994: Challenger Minerals carried out an EM survey and a DDH program. 1995: Consolidated Abitibi did airborne EM & mag surveys and a 5-hole DDH program. 1996: NWT Copper Mines Ltd. did a DDH program. 2000: geological mapping was done over the area by G. Stott for the OGS. 2006-9: East West Resources and Eyeconomy acquired the Marshall Lake property from NWT Copper and began mapping, prospecting, trenching, 58-hole DDH program, IP, Mag and VTEM surveys. 2006-7: East West conducted trenching on the Teck Hill showing. 2007: East West conducted a VTEM airborne survey over the entire property. 2007-8: East West conducted ground IP surveys. 2008: 10 DDH were drilled to test the depth extension of the Gazooma (3 DDH), Teck Hill (4 DDH) and North Gazooma (3 DDH) areas. Eyeconony changed their name to Marshall Lake Mining. 2009: Rainy Mountain Capital Corp. purchased East West. 2010: Rainy Mountain changed its name to Rainy Mountain Royalty Corp. White Tiger Mining Corp. took an option to earn up to 50% of the interest in the Marshall Lake property from Rainy Mountain and drilled on the Gazooma Zone. 2014: White Tiger changed its name to Copper Lake Resources Ltd. and holds 25% interest in the project.

Assessment Work on File

Geology

Province: Superior

Subprovince: Wabigoon

Belt: Marshall Lake

Geological Age: Archean   Geochronological Age: 2739 Ma   Geochron. Age Ref.: Stott et al. 1998. Lithoprobe Report #65

Geology Comments

May 08, 2015 (Therese Pettigrew) - The Marshall Lake property area comprises of a sequence of Neo-Archean calcalkaline metamorphic-volcanic rocks and volcanogenically-derived clastic and chemically-derived metasedimentary rocks within the Marshall Lake Series, an accumulation of felsic to intermediate bimodal rocks over 9000 m thick. The property is situated on the southern limb of a regional antiformal fold at the top of the Marshall Lake Series and is a deformed acidic metavolcanic complex. It is comprised of a large dacitic volcanic pile located on the northern margin of the Onaman-Tashota greenstone belt within the eastern portion of the Wabigoon Subprovince. The geology of the area is dated at 2739 Ma (Nielsen et al., 2010).

Lithology

Lithology Comments

May 08, 2015 (Therese Pettigrew) - The dominant rock type in the Teck Trench is a garnetiferous felsic tuff volcanic that has been metamorphosed to amphibolite facies. Stringers and selvages of chlorite run along foliation. At the SE corner of the trench, the unit is a quartz-eye rhyolite tuff with 3 mm quartz eyes throughout the unit. The Marshall assemblage is an east-trending assemblage comprised of felsic to intermediate composited volcanic rocks including volcaniclastic, effusive units and porphyritic felsic intrusions, intruded by Proterozoic mafic dykes trending north-south. The felsic volcanics range from massive aphyric to quartz-feldspar phyric flows, tuffs, lapilli tuff (massive and banded), ocarse agglomerates and breccia units and consist of between 80-90% of the rocks on the Marshall Lake property. Both clastic and chemical metasedimentary units and conformable mafic flows overlie the assemblage. The clastic metasediments are derived from weathered portions of the underlying felsic stratigraphic pile and deposited flanking the deposit. The chemical metasedimentary rocks comprise of a regional banded iron formation to the east and south of the felsic pile that is composed of oxide-sulphide iron facies and ferruginous chert layers (Nielsen et al., 2010).

Mineralization

Mineralization Comments

May 08, 2015 (N Bennett) - DDH TH-07-01 reported copper values that range from 16 ppm to 11520 ppm (1.52%). Zinc values range from 19 ppm to 64200 ppm (6.42%). Silver values range from 2 ppm to 39 ppm. Gold values range from <0.005 ppm to 2.92 ppm. DDH TH-07-02 reported copper values that range from 13 ppm to 11540 ppm (1.54%). Zinc values ranged from 7 ppm to 177 ppm. Silver values ranged from <0.2 ppm to 9.3 ppm. Gold values ranged from <0.005 ppm to 2.79 ppm. DDH TH-07-03 had copper assays that ranged from 1050 to 1620 ppm. DDH TK-07-01 reported anomalous metal contents ranging from 1100 to 7790 ppm copper in 33 samples with an interval intersected of average 3272 ppm copper over 39.25 m from 17.2 to 90 m. DDH TK-07-02 intersected an interval of 0.52 % copper, 4.7 g/t silver and 0.06 g/t gold over a 27.75 m section from 56.25 to 84 m. Included in this interval is 3.23 % copper, 31.9 g/t silver, 0.58 g/t gold over 1.75m and 1.54 % copper, 15 g/t silver, 0.23 g/t gold over 4.75m. DDH TK-07-03 had assays reported that included a zone of average 977 ppm copper over 20.2 m from 8 to 28.2 m including an intercept of 2420 ppm copper at 19.6 m; an intercept of 3160 ppm copper at 98.5 m; an intercept of 2740 ppm copper at 111 m; an intercept of 3050 ppm copper at 129 m; and a zone of average 1580 ppm copper over 35.5 m from 148 to 183.5 m including a subzone of 2126 ppm copper over 18 m from 148 to 166 m. DDH TK-07-05 had assay results that reported a zone of average 3069 ppm copper over 4.87 m from 5.97 to 10.84 m including an intercept of 1.08 % copper from 10.34 to 10.84 m; an intercept of 9600 ppm copper from 77 to 77.8 m; and a zone of average 2202 ppm copper over 23.50 m from 150 to 173.5 m including an intercept of 8410 ppm copper from 161.1 to 161.85 m, a subzone of average 4218 ppm copper over 3m from 170.5 to 173.5 m which includes an intercept of 5670 ppm copper from 171.5 to 172.5 m.

May 08, 2015 (Therese Pettigrew) - In the Teck Trench, a shear zone within garnetiferous felsic tuff volcanics has a foliation of 120 to 138 degrees strike and steep dip of 87 degrees S. The main Teck showing at samples JL-07-025 and JL-07-026 contains malachite staining and stringy to massive chalcopyrite and bornite sulphides. At the southeast end of the trench, a quartz-eye rich unit contains sulphidized quartz veins, malachite staining and fine grained chalcopyrite sulphides in samples JL-07-035 to JL-07-036. In a malachite-stained and chalcopyrite-mineralized gossan shear zone in the north part of the trench, sample JL-07-019 contains 1.13% Cu. Sample JL- 07-023 to the southwest in the same alteration zone close to the occurrence, the unit is stringy chalcopyrite mineralized with 1.99% Cu and 0.398 ppm Au. Samples JL-07-025 and -026 from the main Teck occurrence contain massive chalcopyrite-bornite sulphides with 4.04% Cu, 0.230 ppm Au and 38 ppm Ag in JL-07-025 and 6.07% Cu, 0.215 ppm Au and 61.4 ppm Ag in JL-07-036. At the SE end of the trench on the other side of the water, samples JL-07-032, -035a and -035b contain mineralization with 9320 ppm, 6700 ppm and 7560 ppm Cu. Sample JL-07-034 is mineralized with 5.14% Cu, 0.549 ppm Au and 53.1 ppm Ag. Sample JL-07-036 was taken proximal to and within the zone of the Teck occurrence and contains 3.13% Cu, 0.265 ppm Au and 61.4 ppm Ag. Other mineralized samples in the Teck Trench are the MK-series samples from MK-06-001 to -009 which have anomalous Cu and Ag contents of 11.45% Cu and 120 ppm Ag in MK-06-001; 7360 ppm Cu in -002; 9.8% Cu and 96.3 ppm Ag in -003; 4.3% Cu and 41.2 ppm Ag in -004; 6.94% Cu and 76.3 ppm Ag in -005; 2.52% Cu and 26.1 ppm Ag in -006; 2.75% Cu and 26.5 ppm Ag in - 007; 3.22% Cu and 34.9 ppm Ag in -008; and 3.48% Cu and 32.9 ppm Ag in - 009. Along with anomalous Cu and Ag, samples -001, -003, -005, -008 and -009 contain 11.35%, 9.56%, 8.64%, 7.51% and 6.82% Fe respectively. Sample RSM-06-018 is mineralized with 6.69% Cu and 78.6 ppm Ag and sample RSM- 06-024 is mineralized with 2.13% Cu and 24.5 ppm Ag. MK-series samples taken east of the Teck trench are found to contain anomalous Cu, Zn and Ag contents of 1425 ppm Cu, 3.57% Zn, and 37.5 ppm Ag in MK-06-045; 1565 ppm Cu, 4.67% Zn and 46.3 ppm Ag in -046; 6470 ppm Cu, 12.45% Zn and 102 ppm Ag in -047; 5270 ppm Cu, 5.67% Zn and 50 ppm Ag in -048; and 5.01% Zn in -050. Sample -047 also contains 168 ppm anomalous Bi. For the NF-series samples in the trench, anomalous Cu and Ag metal contents are 1905 ppm Cu in NF-06-057; 1.69% Cu and 19.1 ppm Ag in -058; 3.75% Cu and 35.5 ppm Ag in -059; 5.15% Cu and 51.9 ppm Ag in -060; 1.11% Cu in -061; 1970 ppm Cu in -062; 1880 ppm Cu in -063; 2830 ppm Cu in -064; 6610 ppm Cu and 18 ppm Ag in -065; 3500 ppm Cu in -066; 5900 ppm Cu in - 067; 3510 ppm Cu in -068; and 2280 ppm Cu in -070. Sample -060 along with anomalous Cu and Ag contains 7.34% Fe. The Gazooma Zone has now been linked by a continuous IP anomaly to the Teck Hill occurrence 600 m to the SE. Three holes drilled in section on Teck Hill, on the IP anomaly trending to Gazooma, intersected copper mineralization. One hole was also drilled 100 m south of the original Teck Hill discovery made in 1954 and 1m of massive chalcopyrite was intersected at 93 m in the hole followed by another 30 m of stringer and disseminated chalcopyrite. This gives over 140 m of sulphides down dip from the surface showing and confirmation of a wide spread copper zone within the felsic (rhyolite) volcanics.

Mineral Record Details

References

Publication - Technical Report on the Marshall Lake Property, Northwestern Ontario; NI 43-101 Technical Report

Publication Number: 2010 43-101 Date: 2010

Author: Nielsen, P., Middleton, R.S., and Bennett, N.A.

Publisher Name: East West Resource Corp. and Marshall Lake Mining

Location: SEDAR; https://copperlakeresources.com/wp-content/uploads/2022/02/Marshall-Lake_NI_43-101.pdf

Publication - Technical Report on the Marshall Lake Property

Publication Number: 2016 43-101 Date: 2016

Author: Hart, T.R.

Publisher Name: Copper Lake Resources

Location: SEDAR

Part - Geology of the Gripp Lake area

Publication Number: ARV67-03 Page: 16-18  Date: 1997

Author: Langford F.F.

Publisher Name: Ontario Dept. of Mines

Location:

Folio - Summit Lake area, District of Thunder Bay

Publication Number: GDIF015 Date: 1997

Author: Thunder Bay RGO

Publisher Name: Ontario Geological Survey

Location:

File - Resident Geologist Mineral Deposit Files

Publication Number: Min Dep Date: 1996

Author:

Publisher Name:

Location: Thunder Bay RGP

Map - Precambrian geology, Little Marshall Lake area

Publication Number: M2531 Scale: 1:20,000    Date: 1989

Author: Amukun S.E.

Publisher Name: Ontario Geological Survey

Location:

Map - Precambrian Geology, Marshall Lake Area, Onaman-Tashota Greenstone Belt

Publication Number: P3424 Scale: 1:20,000    Date: 2000

Author: Straub K.H., Stott G.M., Phillips J.

Publisher Name: Ontario Geological Survey

Location:

Map - Gripp Lake area, District of Thunder Bay, Ontario

Publication Number: M1958-01 Scale: 1:31,680    Date: 1997

Author: Langford F.F.

Publisher Name: Ontario Dept. of Mines

Location:

Map - Geological series, Little Marshall Lake area, District of Thunder Bay

Publication Number: P1561 Scale: 1:15,840    Date: 1978

Author: Amukun S.E., Foster J.R., MacDonald J.A.

Publisher Name: Ontario Geological Survey

Location:

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For detailed information regarding this mineral record please contact the Thunder Bay North Resident Geologist District Office