Ontario Geological Survey
Permanent Link to this Record:
MDI52F08SW00003
| Record Name(s) | Fox Lake East - 1978 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1991-Jan-24 |
| Date Last Modified | 2022-Jul-06 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Wapageisi Lake Area
Latitude: 49° 21' 50.85" Longitude: -92° 27' 11.97"
UTM Zone: 15 Easting: 539692.766 Northing: 5468078.713 UTM Datum: NAD83
Resident Geologist District: Kenora
NTS Grid: 52F08SW
Point Location Description: Transfer
Location Method: Conversion from MDI
Access Description: The Fox Lake East occurrence is located in the northwest portion of the Wapageisi Lake Area, in the Dryden district of the Kenora Mining Division, in northwestern Ontario. Access to the Fox Lake claim group is achieved via the Snake Bay Road, which turns south from Highway 17. The Snake Bay Road is an all weather road maintained by Great Lakes Forest Products of Dryden, Ontario. The Snake Bay road traverses the western portion of the claim block 21 miles south of Highway 17. The junction made by the intersection of the Snake Bay Road with Highway 17 is about 24 miles east of the town of Dryden and 7 miles west of the hamlet of Borup's Corners. (Assessment File 52F/08SW K-1, Voyager Explorations Ltd, 1985, Kenora Resident Geologists Office)
1978: Selco Mining Corp. carried out line cutting and ground EM and magnetic surveys. 1984: Selco was bought by the British Petroleum Company and renamed to BP Selco Mining and Minerals Division.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.8712 / 52F08SW K-1 | 52F08SW8149 | 52F08SW8149 |
Province: Superior
Subprovince: Wabigoon
Terrane: Western Wabigoon
Belt: Eagle-Wabigoon-Manitou
Geological Age: Precambrian
Jul 06, 2022 (Q Unknown) - The Archean stratigraphic section is composed of five volcanic episodes around a major uplift zone. This tectonic zone was the focus for associated shear zone development, intrusive activity and hydrothermal alteration. The basal portion of the stratigraphy is the Wapageisi Lake Group of tholeiitic basalts overlain by heterolithic breccias intruded by a layered gabbro sill and capped by quartz porphyritic felsic volcanism, uplift and erosion occurred which led to the production of an angular unconformity. The angular unconformity is overlain by the Stormy Lake Group which is composed of a thin basal polymictic conglomerate blanketed by a unit of dacitic breccia approximately 500 m thick followed by a thick sequence of polymictic conglomerates. After the period of dacitic volcanism; a series of vertical conjugate ductile shear zones trending Az. 120 and Az. 180 were formed in the Wapageisi Lake Group rocks. These shear zones and the adjacent country rock experienced widespread carbonate alteration in the Stormy Lake Group consisted of non shear/vein related areas of widespread pervasive carbonate, pyrite and magnetite-chlorite-pyrite alteration. A series of composite mafic to ultramafic dykes intruded in the shear zones during active carbonate alteration and maybe related to subaqueous trachy basalt flows which extruded, as part of the Stormy Lake Group, some 600 m above the active shear zones. Later silicification with associated pyrite, arsenopyrite and gold overprinted the carbonate-bearing zones. East-west trending dextral fault zones with associated quartz diorite dykes marked the end of Stormy Lake Group sedimentation and maybe associated with batholith emplacement and northward tilting of the entire package. Late northeasterly trending sinistral faults associated with the Manitou Fault system to the west cut all the above rock types and structures.
| Rock Type | Rank | Composition | Texture | Relationship | Mafic lava flow-unsubdivided | 1 |
|---|---|---|---|---|
| Mafic pillowed flow | 2 | |||
| Mafic flow breccia | 3 | |||
| Quartz-Feldspar Porphyry | 4 | |||
| Vein | 5 | quartz |
Jul 06, 2022 (Q Unknown) - The predominant lithology on the property is mafic metavolcanics. The mafic metavolcanics comprise a pile of intercalated pillowed flows, brecciated pillowed flows, porphyritic pillowed flows and porphyritic flows associated with or without interflow breccia, medium to fine grained mafic flows and amphibolite. The mafic pile forms the basal portion of the stratigraphy in the region, known as the Wapageisi Lake Group. Diabase dykes, rarely encountered, intrude the mafic pile. The mafic pile is also intruded by felsic hypabyssal apophyses of quartz feldspar porphyry. There are at least two episodes of quartz veining; the first episode intrudes the mafic flows but does not intrude the quartz feldspar porphyry dykes and the second episode intrudes the mafic flows and the quartz feldspar porphyry dykes. Silica enrichment and pervasive carbonate alteration is widespread in the mafic pile. Pyritization is ubiquitous and the pyrite occurs as fine to very fine grained cubes. (Assessment File 52F/08SW K-1, Voyager Explorations Ltd, 1985, Kenora Resident Geologists Office)
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore |
Jul 06, 2022 (Q Unknown) - Assay: 1000 ppb Au.
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