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Ontario Geological Survey
Permanent Link to this Record:
MDI42D14SE00042
Record Name(s) | Johnston-McKenna - 1937, P.J. Sullivan - 1982, Promistora - 1982, Min-Nova - 1959, Cook Lake - 1936, Bar Manitou Mines Ltd. - 1966 |
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Related Record Type | Partial |
Related Record(s) | |
Record Status | Occurrence |
Date Created | 1982-Aug-31 |
Date Last Modified | 2023-Feb-06 |
Created By | |
Revised By |
Primary Commodities: Gold
Secondary Commodities: Copper, Zinc, Silver, Sulphur/Pyrite
Township or Area: Priske
Latitude: 48° 50' 28.12" Longitude: -87° 14' 25.39"
UTM Zone: 16 Easting: 482361.66 Northing: 5409824.76 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 42D14SE
Point Location Description: Shaft, several possible adits/tunnels.
Location Method: Conversion from MDI
Access Description: The property is located west of the Schreiber Pyramid property on Big Duck Creek in Priske Township, about 3.2 km northeast of Schreiber (claims TB 28231, 28232 and 35349, claim map G 631, Priske Township). Access may be gained using a bush road which extends north and east from Schreiber, past the edge of Cook Lake.
1921: Rich veins were discovered southeast of Cook Lake. 1934: Claims were staked by D.E. Johnston, K.J. McKenna, and D.T. McCann. 1936: Cook Lake Gold Mines Ltd. was incorporated to develop the Johnston-McKenna property. Camp buildings and a mining plant were constructed; a tunnel was excavated on TB13179; surface trenching carried out. 1937: A tunnel was initiated in Dec. 1936 to intersect the No. 4 vein; 23 m of drifting carried out; 2-compartment vertical shaft sunk; 32 ton bulk sample from the Johnston-McKenna and McKenna-McCann properties mined and shipped for treatment. Yield was 0.82 oz/ton Au. Work was discontinued and the equipment was transferred to the McKenna-McCann property. 1940: 17 claims cancelled. 1946-1958: Various claims were cancelled, staked, restaked, etc. 1959: P.S. Broadhurst of Mina-Nova Mines recommended an exploration program, but none was implemented. 1960-1984: Various companies held the ground; claims cancelled and restaked etc. Some minor drilling and stripping were performed. 1985: Pat Mikko Resources optioned the property, and conducted stripping, trenching, sampling, site development and mill development on the property. 1991: Line cutting, stripping, trenching and sampling was conducted by Pat Mikko Res. 2016: First Minerals Exploration Ltd. carried out prospecting and sampling.
Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
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2.57246 | 20000014108 | 20000014108 |
Province: Superior
Subprovince: Wawa
Terrane: Wawa-Abitibi
Belt: Schreiber-Hemlo
Geological Age: Archean
Dec 07, 2005 (B Nelson) - The general geology consists of predominately mafic, spherulitic pillowed metavolcanic flow rocks, and minor iron formation which have been intruded by metagabbro and metadiorite dykes, lamprophyre dykes and small quartz feldspar porphyry stocks or dykes. Pillow cusps indicate dips to the northeast. Air photo interpretation and field evidence suggest several major northwest trending lineaments, including a Big Duck Creek Hays Lake lineament, Hollinger Lake lineament and a Croft Lake Lamont Lake lineament. A secondary or minor fault set trending southwest northeast, and occasionally north south is present within this area. This conjugate fault set appears common in areas of gold mineralization. The northwest trending shear zones are sub parallel to the long axis of the stretched pillows. An approximate 5 x 3 km rectangular parcel of land in this area, bounded by Croft Lake Lamont Lake lineaments, is highly recommended for prospecting and exploration. Gold bearing quartz veins occupy shear zones and faults with predominately mafic, spherulitic pillowed flows. Minor metagabbroic, metadiorite and lamprophyre dykes and quartz feldspar porphyry and stocks intrude the metavolcanic rocks. Northwest trending shear zones and lineaments are present and well developed throughout the area, however, a secondary or conjugate fault set, trending west southwest was also observed. Numerous quartz veins were observed on the property, including several veins in the northeast section of claim TB 13128 or 35349. These veins were originally numbered No. 1 to No. 4. The No. 1 to No. 3 veins are represented by the narrow quartz veins, either singular or composite in nature. They strike to the northwest 280 degrees 330 degrees and dip from 70 degrees SW to vertical. The veins observed vary in width form 1 to 2 cm stringers up to 0.5 m, but likely average 15 to 20 cm in width.
Rock Type | Rank | Composition | Texture | Relationship | Intermediate lava flow-unsubdivided | 1 | Andesite | Host |
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Lamprophyre-Unsubdivided | 2 | Intrudes | ||
Mylonite/Fault Gouge/Pseudotachylite | 3 | Shear Zone | Contains | |
Vein | 4 | Quartz | Host | |
Mafic pillowed flow | 5 | Pillowed Flow; Sheared | Host | |
Ironstone-unsubdivided | 6 | Near | ||
Gabbro | 7 | Gabbro | Near | |
Diorite | 8 | Diorite | Near | |
Quartz-Feldspar Porphyry | 9 | Near |
Dec 07, 2005 (B Nelson) - The No. 4 vein or Main vein occupies a fault or shear zone striking 220 degrees to 270 degrees and dips 35 degrees to 55 degrees NW. This vein has been interpreted by past workers to be folded or to represent a separate main vein. These past workers also suggested that the northwest trending veins were secondary a tension gash veins. Observations by the author indicate that the northwest trending veins are the primary set of veins, and that the southwest west trending No. 4 vein, is a secondary, conjugate vein occupying a later fault. Thus the north west trending veins have a polyphase emplacement, during this period deformation produced southwest trending faults which were sealed by one phase of the vein emplacement. This is supported by the presence of crack seal and brecciated textures, and by displacement of some of the vein systems.
Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
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1 | Chalcopyrite | Economic | Ore | ||||
2 | Galena | Economic | Ore | ||||
3 | Gold | Economic | Ore | ||||
4 | Pyrite | Economic | Ore | ||||
5 | Sphalerite | Economic | Ore | ||||
1 | Quartz | Economic | Gangue | ||||
2 | Tourmaline | Economic | Gangue | ||||
Chlorite | Alteration | Chloritic | 1 | Unknown | Disseminated | ||
Epidote | Alteration | Epidotization | 2 | Unknown | Disseminated | ||
Sericite | Alteration | Sericitization | 3 | Unknown | Disseminated | ||
Quartz | Alteration | Silicification | 4 | Unknown | Veins | ||
Hematite | Alteration | Hematization | 5 | Unknown | Disseminated | ||
Carbonate | Alteration | Carbonatization | 6 | Unknown | Disseminated | ||
Tourmaline | Alteration | Tourmalinization | 7 | Unknown | Disseminated |
Dec 07, 2005 (B Nelson) - Beaton (1937) estimated the grade on a section of the No. 4 vein (Cook Lake Gold Mines Main Vein) as: ... a zone 91 feet long having an average width of 23 inches has been well exposed and in this zone I would estimate an average tenor of the quartz to exceed $60.00 per ton*. Veins of this nature are exceedingly difficult to evaluate, as the gold is not evenly distributed throughout the vein, but concentrated in patches throughout the vein and channel sampling would only give an approximate, or even very erroneous, value of the ore. However, there is enough visible gold present to safely make the above estimate, and the sampling done so far has confirmed this figure. Past reports indicate numerous occurrences of high grade float material, interpreted to be close to their original source location. Grab samples collected by Mina-Nova Mines Limited from vein on TB13127 (TB 28231) returned results including the following: Southwest Vein: 1.98 oz.ton Au from quartz with very fine mineralization (free gold not positively identified). 11.38 oz/ton Au from quartz, possible visible gold noted. 30.30 oz/ton Au from quartz. No V.G. noted. Main Vein: 9.30 oz/ton Au from quartz; native gold indicated.
Jun 22, 2018 (Therese Pettigrew) - During the 2016 prospecting and sampling program, Significant gold assay results were returned from the No. 4 vein. These include: Grab Sample K006931 with 27.4 g/t Au from a weakly strained mafic metavolcanic rock containing several quartz veinlets from the hanging wall of the No.4 vein; and Grab sample K006934 with 137 g/t Au from a selective grab sample of the No.4 vein (AFRI 2.57246).
Dec 07, 2005 (B Nelson) - Accessory minerals (in the No. 4 Vein) include chlorite, epidote, sericite, hematite, carbonate, and abundant tourmaline in places. The vein does not display a crack seal nature and is generally quite barren. Minor extensional veins were observed.
Rank | Classification |
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1 | Lode (Gold) |
1 | Vein |
Rank | Characteristic |
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1 | Vein |
Date: Feb 14, 1997
Geologist: B Nelson
Notes: Resident Geologist personnel visited the site June 18, 1985; July 9, 1985; July 16, 1985; August of 1986; November of 1986; June of 1993. Notable results of sampling include: 0.78 oz/ton Au from the main vein, adit area, in fine grained quartz. 2.64 oz/ton Au from a sulphide rich quartz veinlet with V.G. 6.56 oz/ton Au from the main No. 4 vein--V.G. noted. 8.35 oz/ton Au from the 1st pit, No. 1 Vein, near road onTB13128, E of dump. The sample also assayed 1.35 oz/ton Ag. 1.44 oz/ton Au from northwest trending crack-seal veins on TB13128.
Year | Tonnes | Commodities | Reference | Comment |
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1937 | 5 |
Gold 110 |
OFR 5951 | Actual tonnage milled is 4.68 t. |
Book - Canadian Mines Handbook 1960-61, Mina-Nova
Publication Number: CMH 1960-61 Page: 163 Date: 1961
Author:
Publisher Name: Northern Miner Press
Location: Thunder Bay RGP
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:
Mono - Mineral Occurrences in the Nipigon-Marathon Area, Volumes 1 and 2.
Publication Number: OFR5951 Page: 268-283 Date: 1996
Author: Schnieders B.R., Smyk M.C., Speed A.A., McKay D.B.
Publisher Name: Ontario Geological Survey
Location:
Book - Canadian Mines Handbook 1966-67, Bar-Manitou
Publication Number: CMH 1966-67 Page: 38 Date: 1967
Author:
Publisher Name: Northern Miner Press
Location: Thunder Bay RGP
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:
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 Terrace Bay area, west sheet, Thunder Bay District
Publication Number: P2417 Scale: 1:15,840 Date: 1981
Author: Carter M.W.
Publisher Name: Ontario Geological Survey
Location:
Part - The southwestern part of the Schreiber area
Publication Number: ARV47-09.001 Page: 27-28 Date: 1998
Author: Harcourt G.A.
Publisher Name: Ontario Dept. of Mines
Location:
Compend - Report of Activities 1992, Resident Geologists
Publication Number: MP161 Page: 125, 131-132 Date: 1993
Author: Fenwick K.G., Pitts A.E., Newsome J.W.
Publisher Name: Ontario Geological Survey
Location:
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