Ontario Geological Survey
Permanent Link to this Record:
MDI52F03NE00003
| Record Name(s) | Gates Lake - Trench 5 - 1901 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1983-Apr-29 |
| Date Last Modified | 2023-Jul-04 |
| Created By | |
| Revised By |
Primary Commodities: Gold, Antimony
Township or Area: Napanee Lake Area
Latitude: 49° 8' 20.13" Longitude: -93° 9' 38.5"
UTM Zone: 15 Easting: 488279.183 Northing: 5442912.043 UTM Datum: NAD83
Resident Geologist District: Kenora
NTS Grid: 52F03NE
Point Location Description: General
Location Method: Conversion from MDI
Access Description: The Gates Lake occurrence is located 76 km south-south-west of Dryden on the narrow strip of land between Manitou Stretch and Gates Lake. Road access to the property is from Hwy 502, along the Cedar Narrows Road to the landing on the Manitou Stretch. A short boat trip of about 16 km reaches the occurrence. Five trenches are spread out along a 200 m zone trending northeasterly. (OFR 5731, p. 65).
1901: sampling. 1941-1944: Sporadic work which included trenching and 1,145 m of drilling by Goldale Mines Ltd., and by Birch Bay Gold Mines (Kenora Miner, August 22, 1944, and Canadian Mines Handbook, 1945). 1988-89: Homestake Mineral Development Co. undertook ground VLF-electromagnetic, magnetic, and geological surveys, and reconnaissance soil and rock geochemical sampling program.
Province: Superior
Subprovince: Wabigoon
Terrane: Western Wabigoon
Belt: Eagle-Wabigoon-Manitou
Geological Age: Precambrian
Feb 18, 2010 (C Ravnaas) - The trenches are sunk in a gabbro surrounded by pillowed mafic metavolcanics (Berger 1989). All the bedrock is sheared, and iron carbonatized and sulphidized. Structural Geology: Shear zones intersected in the trenches consist of fissile schists varying from 2.5 to 5 m wide. The shears have a general northeast trend and dip 74 0 to the northwest. The position of the trenches suggests two different structural interpretations. The first interpretation is that of two parallel sheared zones, 15 m apart, so that trench 2 and trench 3 were opened up on one shear zone, and trenches 3A, 4 and 5 were opened up on the other one. The second interpretation is that these five trenches are on the same shear, but that it was dextrally faulted by a north-trending fault between trench 3 and trench 3A or perhaps both shear is connected by a right-stepping flexure. Regardless of which interpretation is correct, flat-lying quartz stringers in all the trenches suggest a dip-slip component of shear. Coarse, loose, quartz vein material is found beside all the trenches, but none was found in place in the trenches. The quartz vein material is white to pale grey, opaque and sometimes contains ribbons of chlorite. Fractures in the quartz are filled with calcite. Accessory minerals are ankerite, and minor sericite, chlorite, and muscovite. Sulphides consist of less than 1% pyrite. The schistose rock in the trenches is moderately to strongly iron carbonatized, sulphidized, and locally silicified. Sulphides vary from trace to 40!fc pyrite, arsenopyrite, and pyrite. The amount of sulphides is greatest in the fissile zone, which in some places contains narrow semi-massive sulphide bands and stringers. (OFR 5731, p. 65 - 70)
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Arsenopyrite | Economic | Ore | ||||
| 2 | Pyrite | Economic | Ore |
Feb 18, 2010 (C Ravnaas) - Eleven grab samples were taken by the author. Gold mineralization is associated with the sulphidized and iron carbonatized fissile zone. This type of mineralization is identical to that at the Sorry Mac occurrences and to trenches 1, 3, 4, and 10 as the Peep Bay occurrence. Analytical results indicate a correlation between gold, and antimony and arsenic contents. The best assay came from trench 3 which returned 5410 ppb gold. If the second structural interpretation is the correct one, high gold values could be expected to occur near the junction of the shear with the north-trending fault or in the flexure of the shear zone. (OFR 5731, p. 65 - 70)
Aug 04, 2022 (Q Unknown) - 1901: The Pan American Exposition 1901 reported an assay of 0.865 ounce gold per ton (Assessment File 52F/03 NE, H-l, Resident Geologist's Office, Kenora). 1944: Pit 3 yielded 0.16 ounce gold per ton over 10 feet of selected rocks (Assessment File 52F/03 NE, H-2, Resident Geologist's Office, Kenora). Seven percent antimony was detected over an average width of 10 feet in drilling over a 250 foot long zone (Assessment Files, 52F/03 NE, H-l, Resident Geologist's Office, Kenora). 1988-89: The best grab sample came from trench 2, which assayed 21.95 g/t gold (Assessment Files, Resident Geologist's Office, Kenora). (OFR 5731, p.67)
Book - Northern Miner 84-05-31, Sparton
Publication Number: NMINER Date: 1996
Author:
Publisher Name: Northern Miner
Location:
Book - Northern Miner 85-07-11, Sparton, p. 18
Publication Number: NMINER Date: 1996
Author:
Publisher Name: Northern Miner
Location:
Mono - Gold deposits of the Kenora-Fort Frances area, districts of Kenora and Rainy River
Publication Number: MDC016 Page: 17 Date: 1976
Author: Beard R.C., Garratt G.L.
Publisher Name: Ontario Division of Mines
Location:
Mono - Feasibility of small scale gold mining in northwestern Ontario (parts of the districts of Kenora, Rainy River, and Thunder Bay), volume 1, text, volume 2, appendices
Publication Number: OFR5332 Page: 46-47 Date: 1981
Author: Neilson J.N., Bray R.C.E.
Publisher Name: Ontario Geological Survey
Location:
Article - Geology of the Manitou Stretch area, District of Kenora
Publication Number: MP141.020 Page: 145-148 Date: 1997
Author: Berger B.R.
Publisher Name: Ontario Geological Survey
Location:
Mono - Geology of the Vista Lake area
Publication Number: OFR5753 Page: 90-92 Date: 1990
Author: Smith P.M.
Publisher Name: Ontario Geological Survey
Location:
Mono - Property visits by the Dryden area mineral commodity geologist, 1989
Publication Number: OFR5731 Page: 65-68 Date: 1990
Author: Delisle P.C.
Publisher Name: Ontario Geological Survey
Location:
Book - REG GEO FILE 1942, GATES LAKE
Publication Number: N/A Date: 1996
Author:
Publisher Name:
Location:
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