Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42D14SW00037

Record: MDI42D14SW00037

General

Commodities

Primary Commodities: Gold

Secondary Commodities: Copper, Silver

Location

Township or Area: Priske

Latitude: 48° 45' 53.73"    Longitude: -87° 16' 19.34"

UTM Zone: 16    Easting: 480009   Northing: 5401360    UTM Datum: NAD83

Resident Geologist District: Thunder Bay South

NTS Grid: 42D14SW

Point Location Description: Adit, shaft, open cut, trenches.

Location Method: Data Compilation

Access Description: Accessible via the four-wheel drive gravel ‘Worthington Bay’ road which joins Trans-Canada Highway No. 17 approximately 4.4 kilometres east of the town of Schreiber. The Worthington Bay road leads 5 kilometres south to the shore of Lake Superior where the old Northshore mill was located.

Exploration History

1931: Originally discovered by W. Longworth's son Gilbert in 1931. Mid-1930s: Development included an adit, shaft, open cut and trenches. Bulk sampling and a small amount of mining was done. The adit was originally driven perpendicular to and into the cliff at about 220 degrees, then changed attitude and followed the vein for up to 2 to 3 m at 100 degrees, and then continued to drift at approximately 220 degrees. Why the past workers did not drift further along this structure is unknown. Approximately 70 m west of the adit an open cut 35 m long by 2 to 3 m wide and up to 6 m deep has been developed on the vein. Approximately 50 m east of the adit several trenches and a pit or shaft has been developed on an approximately 7.5 cm wide vein. 1982: The Rooster Canyon occurrence and Longworth Silver vein were staked by P. Skalesky. 1988-1992: Noranda Exploration optioned the property and carried out geophysical, geochemical and geological surveying. Trenching and rock sampling were undertaken on old trenches and other targets, resulting in the discovery of the Afric Zone. 20 DDH were completed, totalling 2495 m. Estimated non-43-101 compliant resource of 2 million tonnes grading 2.2 gpt Au in the Afric Zone. 1989: An airborne geophysical survey was flown over the Rooster Canyon claims with assistance from an OPAP grant. 1990: D. Skalesky and L. Lundstrom conducted stripping, trenching and sampling. 1991: Noranda Exploration Company Ltd. conducted prospecting, geological mapping and humus soil geochemical surveys. 1995: The Rooster Canyon property is held by D. Skalesky, A. Skalesky and L. Lundstrom. 1997: Cyprus Canada Inc. conducted an exploration program that included geophysical surveying (IP, VLF-EM and magnetics), humus geochemical sampling, geological mapping and prospecting, power stripping and rock geochemical sampling, and 7 DDH totalling 1131 m to extend the Afric Zone westward and to test the Northshore Vein. 1999-2005: International Taurus Resources (which then became American Bonanza Golding Corp) optioned the property including the surface rights. 2005-2007: American Bonanza Gold Corp drilled 11 DDH totalling 3163 m in 2006 and 9 DDH totalling 1367 m in 2007. Also excavated six trenches and did overburden stripping. Trenches were planned to be mapped in 2008, but no reports indicate this happened. 2011: interest in the property was transferred to Balmoral Resources, who then optioned the property to GTA Resources in July 2011. GTA drilled 12 DDH totalling 1038 m. 2012: GTA had three phases of drilling. In Phase 1, they drilled 23 DDH, totalling 7188 m. In Phase 2, they drilled 8 DDH totalling 2,431 m. They also contracted two prospectors to locate and sample the historic trenches and GPS survey existing grid-lines, drillhole collars, adits and shafts. Geologists were contracted to conduct property-wide geological mapping at a 1:1000 scale. Phase 3 included 16 DDH totalling 4,757 m. 2013: GTA drilled 17 DDH totalling 3166 m. 2016: GTA drilled 51 DDH totalling 1463 m and conducted preliminary metallurgical testing. 2020: Ready Set Gold Corp. carried out sampling, airborne magnetic survey and LiDAR surveys, a ground IP survey, and trenching. 2021: Ready Set Gold drilled 14 DDH totalling 2815.8 m.

Assessment Work on File

Geology

Province: Superior

Subprovince: Wawa

Terrane: Wawa-Abitibi

Belt: Schreiber-Hemlo

Geological Age: Archean  

Geology Comments

Dec 07, 2005 (B Nelson) - The host rocks consists of intermediate to felsic metavolcanic rocks which have been intruded by high-level felsic intrusive rocks including quartz porphyry, quartz feldspar porphyry and syenite. Lamprophyre and diabase dykes also intrude the area. Schnieders et al. (1991) desribes the Rooster Canyon occurrence as: The narrow quartz vein varies in width from 5 to 20 cm. However, a historical report indicates the vein ranges up to 30 cm in width, and could be traced to a vein up to 1.8 m wide. In the area of the adit several veins or a composite vein are present. The quartz veins strike 90 to 105 degrees and dip 80 degrees south to vertically. The main vein displays a 'crack-seal' texture with inclusions and seams (septa) of the host rock. The quartz veins are exposed along a 200 m strike length that appears to be offset 12 m to the north by a left-lateral fault striking 330 to 340 degrees. This fault defines a cliff and ravine into which an adit was driven for approximately 20 m. In the adit area there appears to be an intersection of structures as a fault striking 40 degrees and dipping vertically intersects the 330 to 340 degree structure and the 100 degree striking vein. Airphoto interpretation suggests that there are several prominent and distinctive sets of lineaments in the area: 1). a 100 degree striking set to which the quartz veins are presumably related; 2). a 320 to 340 degree striking set; 3). a prominent 000 to 010 degree striking set; and 4). a 040 degree striking set which parallels the Schreiber Point and Worthington Bay faults. While the exact relationship of these lineament sets to gold mineralization and each other is unclear, these structures should be thoroughly prospected and explored for gold.

Lithology

Lithology Comments

Dec 07, 2005 (B Nelson) - The quartz veins are commonly hosted by a rock that on surface weathers to pink-white, and contains 5 to 10% hornblende phenocrysts within an apanitic groundmass. Cut and polished slabs display a darker colored rock consisting of interlocking crystals of feldspar and hornblende, in places containing up to 2 to 3% disseminated pyrite. In addition, a more mafic and locally hornblende-phyric rock was also observed. While the authors (Schnieders et al. 1991) were unable to determine the genetic relationships of the host rocks, a field name of hornblende syenite was used to describe the host rocks. Past workers such as Harcourt (1939) described the host rocks of the area as syenite as well as intermediate to felsic volcanic rocks. An interesting observation is that cut slabs of the hornblende-phyric rock resemble 'Timiskaming'-type volcanic rocks present in the Shebandowan area.

Mineralization

Mineralization Comments

Dec 07, 2005 (B Nelson) - The main vein displays a 'crack-seal' texture with inclusions and seams of the host rock. Visible gold, locally in coarse grains up to 1 mm in size, were observed at or near the contact of these seams. Felix (1991) stated that the Rooster Canyon vein was observed to be 5 to 20 cm wide and while significant gold assays were realized the vein has little tonnage potential. He also stated that the host rocks and style of mineralization is similar to the North Shores property. Sampling by Noranda (Felix 1991) encountered gold values up to 2.135 oz/ton Au in grab samples and 0.772 oz/ton Au across 1 m. Samples of chloritized syenite including a quartz stockwork assayed 0.038 oz/ton Au across 1 m. Grab samples of the main quartz vein collected by the authors (Schnieders et al.), excluding samples with visible gold, taken from the north wall of the adit assayed up to 0.843 oz/ton Au, 0.16 oz/ton Ag and 0.03% Cu. Grab samples collected by D. Skalesky and L. Lundstrom from the quartz vein on the north wall of the adit assayed up to 1.803 oz/ton Au and 0.35 oz/ton Ag. A chip sample over 0.5 m from the far western extension of the vein indicated 0.002 oz/ton Au. Assays of hornblende-phyric host rock containing 1 to 2% disseminated pyrite collected from new trenches on top of the adit assayed up to 0.039 oz/ton Au. Samples collected by D. Skalesky and L. Lundstrom assayed up to 0.351 oz/ton Au. Historical reports indicate that selected samples assayed up to $1800 per ton in 1931, equivalent to approximately 83 oz/ton Au.

Jul 16, 2018 (Therese Pettigrew) - Drill core samples collected by GTA Resources in 2011 of the three high grade vein structures returned gold values ranging from 2.50 gpt over 2 m to 131 gpt over 0.50 m for the Audney vein, and 3.05 gpt over 1 m to 760.15 gpt over 0.40 m for the Caly veins. When the various higher grade vein intercepts are included with the lower grade intervening mineralization it is apparent that the gold mineralization within the Afric Zone extends over relatively long intervals, such as: WB-11-07 with 1.04 gpt Au over 150 m, WB-11-09 with 1.25 gpt Au over 159 m, and WB-11-11 with 3.21 gpt Au over 149.5 m (AFRI 2.55383).

Alteration Comments

Dec 07, 2005 (B Nelson) - The seams and vein walls display carbonatization in the form of calcite. Samples of chloritized syenite including a quartz stockwork assayed 0.038 oz/ton Au across 1 m.

Mineral Record Details

References

Publication - Technical Report on the Northshore Property; Thunder Bay Mining Division; Priske Township, Ontario, Canada

Publication Number: 2014 43-101 Date: 2014

Author: Report prepared for GTA Resources and Mining Inc.

Publisher Name: Giroux Consultants Ltd. and Minorex Consulting Ltd.

Location: SEDAR

Publication - Technical Report on the Northshore Property; Thunder Bay Mining Division; Priske Township, Ontario, Canada

Publication Number: 2012 43-101 Date: 2012

Author: Report prepared for GTA Resources and Mining Inc.

Publisher Name: Minorex Consulting Ltd.

Location:

Map - Nipigon-Schreiber, geological compilation series, Thunder Bay District

Publication Number: M2232 Scale: 1:253,440    Date: 1973

Author: Carter M.W., McIlwaine W.H., Wisbey P.A.

Publisher Name: Ontario Division of Mines

Location:

Publication - NI 43-101 Technical Report, Mineral Resource Estimate Update on the Northshore Gold Property

Publication Number: 2022 NI 43-101 Date: 2022

Author: Dufresne, M., L'Heureux, R.

Publisher Name: APEX Geoscience for Ready Set Gold Corp.

Location: SEDAR

Map - Schreiber area, District of Thunder Bay, Ontario

Publication Number: ARM47J Scale: 1:31,680    Date: 1997

Author: Bartley M.W., Harcourt G.A.

Publisher Name: Ontario Dept. of Mines

Location:

Map - Geological series, Precambrian geology of the Schreiber area, east part, Thunder Bay District

Publication Number: P2391 Scale: 1:15,840    Date: 1981

Author: Carter M.W.

Publisher Name: Ontario Geological Survey

Location:

Mono - Mineral Occurrences in the Nipigon-Marathon Area, Volumes 1 and 2.

Publication Number: OFR5951 Date: 1996

Author: Schnieders B.R., Smyk M.C., Speed A.A., McKay D.B.

Publisher Name: Ontario Geological Survey

Location:

File - Schreiber-Hemlo Resident Geologist Mineral Deposit Files, Thunder Bay office

Publication Number: Min Dep Date:

Author:

Publisher Name:

Location: Thunder Bay RGP

Mono - Geology of Schreiber-Terrace Bay area, District of Thunder Bay

Publication Number: OFR5692 Date: 1988

Author: Carter M.W.

Publisher Name: Ontario Geological Survey

Location:

Map - Schreiber sheet, District of Thunder Bay, geological compilation series

Publication Number: P0360 Scale: 1:126,720    Date: 1997

Author: Pye E.G.

Publisher Name: Ontario Dept. of Mines

Location:

Map - Schreiber-Duck Lake area, District of Thunder Bay

Publication Number: ARM30A Scale: 1:63,360    Date: 1998

Author: Hopkins P.E., Tanton T.L.

Publisher Name: Ontario Dept. of Mines

Location:

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