Ontario Geological Survey
Permanent Link to this Record:
MDI42E12NW00059
| Record Name(s) | Dajaty - 1917, Watson Lake - 1917 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1991-Jan-22 |
| Date Last Modified | 2022-May-25 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Secondary Commodities: Iron
Township or Area: Walters, Irwin
Latitude: 49° 40' 32.47" Longitude: -87° 45' 39.21"
UTM Zone: 16 Easting: 445103.432 Northing: 5502850.954 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 42E12NW
Point Location Description: General
Location Method: Conversion from MDI
1917: International Mining Development Company conducted trenching and shaft sinking to a depth of 36 feet (11 m) on the iron formation. 1920s: A. E. Tyson conducted trenching and prospecting on the eastern portion of the property. 1946: D. MacLeod conducted trenching, prospecting, magnetometer and induced polarization surveys on the western portion of the iron formation. 1957: Central Manitoba Mines Limited, exploring for iron, worked the entire Watson Lake area and completed 4 diamond drill holes, totalling 308 m (1,012 feet). 1977: A. Hopkins staked the western portion of the property. 1983: Normine Resources Limited optioned the entire block and contracted Bema Industries Limited to conduct linecutting, geological, and geochemical and geophysical surveys. 1984: E. Rentz and O. Theriault optioned the property to Canamax Resources Inc., who conducted mechanical, magnetometer and VLF surveys. 1985: Canamax carried out diamond drilling.
| Rock Type | Rank | Composition | Texture | Relationship | Ironstone-unsubdivided | 1 |
|---|---|---|---|---|
| Vein | 2 | quartz-carbonate |
May 25, 2022 (Therese Pettigrew) - The Watson Lake property is underlain by sedimentary rocks (Southern Metasedimentary Sub-belt) consisting of wacke, feldspathic and quartzose sandstone, siltstone, phyllite-argillite, conglomerate and oxide ironstone. The metasediments are in fault contact to the north with mafic metavolcanics. The metavolcanics include massive, amygdaloidal and pillowed metavolcanics, breccia, tuff and tuffaceous schist. The Watson Lake Fault separates the two units and trends 079 degrees. Regional foliation within the metasediment and metavolcanics is 075-085 degrees. Nordin (1984) described three lithologic units specifically on the Watson Lake property: 1) andesite tuff, 2) thin bedded magnetite-hematite-jasper, phyllite iron formation, 3) massive to phyllite greywacke. A thin lenticular sequence of conglomerate-wacke-argillite (phyllite) a portion of which was mapped in detail outcrops east of Watson Lake immediately south of the Watson Lake Fault. The iron formation is located south of and is conformable with the Watson Lake Fault. The ironstone unit is a significant marker unit that is spatially associated with gold production at Beardmore and Geraldton. The ironstone unit east of Watson Lake consists of two specific units and have been described by Nordin (1984): "The northern strongly magnetic iron formation is 50 to 100 m wide on the eastern portion of the claims and a magnetic survey on the western portion of the claims indicate it is 30-50 m wide. It consists of beds of fine-grained, thinly bedded magnetite and hematite from 1-3 cm intercalated with thin beds of chlorite slate and quartz. It grades along strike and across strike from bands rich in magnetite making up greater than 50% of the rock to predominantly chloritic phyllite with thin bands of magnetite and quartz making up to 10-15% of the rock. In the section from line 16+50E to 19+00E it is highly contorted with numerous S, Z and M folds present and it has been structurally thickened from 50 to 100 m. The iron formation is thought to be a chemical sediment where iron and silica were precipitated from volcanic exhalations. The southern iron formation consists mainly of chloritic phyllite with thin interbeds of hematite-jasper-chert averaging 1-2 m thick. It has been sheared along the phyllite-iron formation contacts with injection of irregular quartz-carbonate-sulphide veins. On the western portion of the claims the stratigraphic position of the lean iron formation is marked by a narrow non-magnetic chloritic phyllite unit." The two iron formations may represent limbs of an isoclinally folded syncline (Mason and White, 1986).
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 5 | Chalcopyrite | Economic | Ore | ||||
| 10 | Gold | Economic | Ore | ||||
| 15 | Pyrite | Economic | Ore |
May 25, 2022 (Therese Pettigrew) - Two main zones of quartz-carbonate veining and auriferous sulphide mineralization were described by Nordin (1984): "(1) Watson Lake Grid: A 24 cm-wide zone of pyrite replacement mineralization is present in sheared phyllitic iron formation to the south of . . . the Watson Lake fault on Line 28+00E to 31+50N. The zone assays 0.148 oz/ton gold and has been prospected by a shallow pit. (2) Doris Lake Grid: Quartz-carbonate-auriferous sulphide veining and replacement is present along sheared contacts with jasper-hematite-chert iron formation along an irregular zone at 14+50E and from L16+00E to L17+50E. A total of 8 samples were taken from the quartz sulphide zone from L16+00E to L16+75E which assayed from 0.22 oz/ton gold to 1.144 oz/ton gold over widths from 30 cm to 90 cm the weighted average grade of the samples is 0.25 oz/ton gold." (Mason and White, 1986)
Map - Dorothea, Sandra and Irwin townships, Thunder Bay District
Publication Number: M2294 Scale: 1:31,680 Date: 1974
Author: Mackasey W.O.
Publisher Name: Ontario Division of Mines
Location:
MonoMap - Geology of Dorothea, Sandra, and Irwin townships, District of Thunder Bay
Publication Number: R122 Date: 1975
Author: Mackasey W.O.
Publisher Name: Ontario Division of Mines
Location:
Map - Walters and Leduc townships, Thunder Bay District
Publication Number: M2356 Scale: 1:31,680 Date: 1976
Author: Mackasey W.O.
Publisher Name: Ontario Division of Mines
Location:
MonoMap - Geology of Walters and Leduc townships, District of Thunder Bay
Publication Number: R149 Date: 1976
Author: Mackasey W.O.
Publisher Name: Ontario Division of Mines
Location:
Mono - Gold occurrences, prospects, and deposits of the Beardmore-Geraldton area, districts of Thunder Bay and Cochrane
Publication Number: OFR5630 Page: 189 Date: 1986
Author: Mason J.K., White G.D.
Publisher Name: Ontario Geological Survey
Location:
Book - GDIF 42E12NW (unpublished)
Publication Number: GDIF Date: 1988
Author: Ontario Geological Survey
Publisher Name: Ontario Geological Survey
Location:
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