Ontario Geological Survey
Permanent Link to this Record:
MDI53A05NW00002
| Record Name(s) | Jardine - 1984, Neawagank Lake - 1984, Zone 4 - 1987 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1984-Aug-09 |
| Date Last Modified | 2022-May-27 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Secondary Commodities: Copper
Township or Area: Neawagank Lake Area
Latitude: 52° 28' 13.79" Longitude: -89° 52' 20.81"
UTM Zone: 16 Easting: 304900 Northing: 5817249.995 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 53A05NW
Point Location Description: Precise
Location Method: Conversion from MDI
1941: Prospecting and trenching by Jardine Syndicate. 1981-82: Geological mapping, prospecting, trenching and geophysical surveys by 493217 Ontario Ltd. 1984-86: Diamond drilling by Texas-U.S. Oil and Gas Inc. 1986-87: Geological mapping and prospecting by Van Horne Gold Exploration Inc. 1996: Geological mapping and prospecting by Placer Dome Canada.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 53B09SW0025A1 | 53A05NW0048 | 53A05NW0048 |
| 53A05NW0033 | 20000004894 | 20000004894 |
| 53A05NW0020 | 53A05NW9707 | 53A05NW9707 |
Province: Superior
Subprovince: Berens River
Terrane: North Caribou
Domain: North Caribou Core
Belt: North Caribou
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Mylonite/Fault Gouge/Pseudotachylite | 1 | Shear Zone | Contains |
|---|---|---|---|---|
| Gabbro | 2 | Gabbro | Contains |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Chalcopyrite | Economic | Ore | ||||
| 2 | Pyrrhotite | Economic | Ore | ||||
| 3 | Arsenopyrite | Economic | Ore | ||||
| 4 | Pyrite | Economic | Ore | ||||
| Silica | Alteration | Silicification | 1 | ||||
| Carbonate | Alteration | Carbonatization | 2 |
Mar 13, 2008 (Mark Puumala) - The Jardine (Zone 4) showing is described by Joliffe (1987) as being hosted in strongly-sheared gabbro. The most significant shearing is reported to strike east, while a weaker northeast-striking fabric has also been noted. Gold mineralization is reported to be associated with both shearing trends, and the host rocks are strongly carbonatized (Joliffe 1987). Sample descriptions from trenches (identified as trenches N to V) examined by Joliffe (1987) indicate that gold is also associated with quartz veins/stringers, silicification and arsenopyrite. This occurrence is found in one of a series of discontinuous northeast- to east-trending shear zones that cross-cut the host gabbro intrusion in an area located to the north and east of Wesley Lake (Piroshco, Breaks and Osmani 1989). The N-9 (MDI000000000500) and Tex showings (MDI53A05NW00006) located to the east, are associated with the same series of structures. Mineralization associated with these shears is reported by Piroshco, Breaks and Osmani (1989) to typically be associated with pods of massive to disseminated arsenopyrite and foliation-subparallel quartz-pyrite-pyrrhotite veins and veinlets. Robertson (1941) reported that a sample of massive arsenopyrite collected by the Jardine Syndicate from an 070-striking shear zone at the original showing assayed 0.51 oz/ton Au. The most significant assay reported from this occurrence by Joliffe (1987) is a chip sample assay of 0.32 oz/ton Au over 0.69 m from Trench U. Breaks, Osmani and DeKemp (1987) reported grab sample assays of up to 2150 ppb Au from this occurrence. An anomalous copper assay of 2540 ppm was also reported from a sample collected immediately to the west of the showing by Breaks, Osmani and DeKemp (1987) from a boulder containing chalcopyrite-bearing quartz vein material.
| Rank | Classification |
|---|---|
| 1 | Lode (Gold) |
| Rank | Characteristic |
|---|---|
| 1 | Sheared |
Book - Report on geological mapping and geochemical sampling programs, Neawagank Lake property, District of Kenora, Patricia Mining Division, northwestern Ontario for Van Horne Gold Exploration Inc.
Publication Number: AFTB53A05NW0026 Date: 1996
Author: Joliffe, T.S. 1987.
Publisher Name:
Location: Thunder Bay RGP
MonoMap - Geology of the Cat Lake-Pickle Lake area, districts of Kenora and Thunder Bay
Publication Number: R207 Page: 34 Date: 1982
Author: Sage R.P., Breaks F.W.
Publisher Name: Ontario Geological Survey
Location:
Mono - The geology of gold prospects in the North Caribou Lake greenstone belt, District of Kenora, northwestern Ontario
Publication Number: OFR5698 Date: 1989
Author: Piroshco D.W., Breaks F.W., Osmani I.A.
Publisher Name: Ontario Geological Survey
Location:
Map - Geological series, Precambrian geology, Opapimiskan-Neawagank lakes area, eastern part, (Opapimiskan Lake project), Kenora District (Patricia Portion)
Publication Number: P3081 Scale: 1:31,680 Date: 1987
Author: Breaks F.W., Osmani I.A., de Kemp E.A., Fogal R.I., Cortis A.L., Woytiuk K., Arias Z.G.
Publisher Name: Ontario Geological Survey
Location:
Book - A report on the Forester Lake area, Patricia portion of District of Kenora, Ontario
Publication Number: AFTB53A05NW0014 Date:
Author: Robertson, C.P. 1941.
Publisher Name:
Location:
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