Ontario Geological Survey
Permanent Link to this Record:
MDI53C07NW00009
| Record Name(s) | Hewitt Lake - 1984 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1984-Jan-31 |
| Date Last Modified | 2022-Jun-06 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Hewitt Lake Area
Latitude: 52° 24' 28.18" Longitude: -92° 49' 55.62"
UTM Zone: 15 Easting: 511420.153 Northing: 5806412.76 UTM Datum: NAD83
Resident Geologist District: Red Lake
NTS Grid: 53C07NW
Point Location Description: General
Location Method: Conversion from MDI
1936: Trenching and assaying by Mining Corporation of Canada. 1988: Prospecting and assaying by W. McNerney. 1991: Prospecting and sampling by R. Hodgson.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.11730 | 53C07NW0007 | 53C07NW0007 |
| OP91-024 | 53C10SE0001 | 53C10SE0001 |
Province: Superior
Subprovince: Sachigo
Terrane: North Caribou
Belt: North Spirit Lake
Geological Age: Mesoarchean
May 24, 2007 (Mark Puumala) - The area geology is described in MDI53C07NW00025.
| Rock Type | Rank | Composition | Texture | Relationship | Chert | 1 | Adjacent |
|---|---|---|---|---|
| Mylonite/Fault Gouge/Pseudotachylite | 2 | Shear Zone | Contains | |
| Terrigenous-Clastic-Unsubdivided | 3 | Adjacent | ||
| Mafic lava flow-unsubdivided | 4 | Near |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| 2 | Pyrrhotite | Economic | Ore | ||||
| 3 | Arsenopyrite | Economic | Ore | ||||
| 4 | Gold | Economic | Ore | ||||
| 5 | Magnetite | Economic | Ore |
May 24, 2007 (Mark Puumala) - Wood (1980) indicates that this occurrence is hosted in ferruginous, pyritiferous meta-chert containing minor magnetite and pyrite. Bateman (1939) further described the mineralized zone as occurring in a siliceous shear zone in drag-folded garnetiferous sediments near a greenstone contact. Mineralization at this location was described by Bateman (1939) as consisting of disseminated pyrite with minor arsenopyrite and pyrrhotite. Other rock types observed in the area by Wood (1980) include mafic metavolcanics to the east and black shale to the west. Stratigraphy and foliation in the area is mapped by Wood (1980) to generally strike approximately northeast (parallel to the shoreline of Hewitt Lake) with near-vertical dip. The occurrence is located immediately west of the northwest-striking Wokokotai Lake Fault. Bateman (1939) reported a grab sample assay of 0.07 oz/ton Au from this occurrence while noting that grab samples collected by Mining Corporation of Canada were reported to have assayed as high as 0.81 oz/ton Au. 1988 assay results of up to 0.176 oz/ton Au are reported from this showing in Huston (1988). Hodgson (1991) reports gold assays of up to 0.052 oz/ton.
| Rank | Classification |
|---|---|
| 1 | Lode (Gold) |
| Rank | Characteristic |
|---|---|
| 1 | Sheared |
Mono - Geology and mineral possibilities in northern Patricia District, Ontario
Publication Number: MP028 Page: 49 Date: 1969
Author: Ayres L.D., Bennett G., Riley R.A.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Geology of the Hewitt Lake area, District of Kenora (Patricia Portion)
Publication Number: OFR5216 Page: 158-159 Date: 1977
Author: Wood J.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Geology of the Hewitt Lake area, District of Kenora (Patricia Portion)
Publication Number: R186 Page: 104 Date: 1981
Author: Wood J.
Publisher Name: Ontario Geological Survey
Location:
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