Ontario Geological Survey
Permanent Link to this Record:
MDI52F16NE00011
| Record Name(s) | Highway 72 - 1969 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Discretionary Occurrence |
| Date Created | 1987-May-20 |
| Date Last Modified | 2022-Mar-02 |
| Created By | |
| Revised By |
Primary Commodities: Miscellaneous Stone
Township or Area: Pickerel
Latitude: 49° 57' 1.9" Longitude: -92° 12' 18.42"
UTM Zone: 15 Easting: 557025 Northing: 5533433 UTM Datum: NAD83
Resident Geologist District: Kenora
NTS Grid: 52F16NE
Point Location Description: Sample 83-162 location from map in MDC027 p. 62
Location Method: Data Compilation
No relevant assessment reports were found on file.
Province: Superior
Subprovince: Wabigoon
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Mafic lava flow-unsubdivided | 1 |
|---|---|---|---|---|
| Terrigenous-Clastic-Unsubdivided | 2 | |||
| Quartz-Feldspar Porphyry | 3 | Quartz-Feldspar |
Jun 30, 2020 (Therese Pettigrew) - The area is underlain by metavolcanics and metasediments intruded by quartz - feldspar porphyry (Storey, 1986). The deposit is exposed in a series of road cuts on Highway 72. The rocks are dark green pillowed mafic metavolcanics intruded by a light green quartz porphyry dyke. The dyke is 6 m in width and trends 070 to 075 degrees. The contacts of the dyke are sharp but somewhat irregular. A strong foliation is developed in the dyke and the metavolcanic host. Both rock types are fissile but the felsic dyke material splits into thinner more even sheets 0.5 to 1 cm in thickness. The foliation is strongest in the roadcut area and becomes less intense to either side of the highway. Mapping by Johnston (1969) indicates discontinuous northeast-trending fault zones in this area roughly parallel to the stratigraphy. The mafic metavolcanics are cut by several sill-like intrusive bodies of felsic rock (Johnston 1972).
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| 2 | Chalcopyrite | Economic | Ore |
Jun 30, 2020 (Therese Pettigrew) - Small amounts of pyrite are present in most of the metavolcanics; in a few locations this is accompanied by chalcopyrite. The felsic intrusive rocks also carry small amounts of sulphides but generally less than the metavolcanics (Storey, 1986).
Journal - Conglomerate of Abram Lake, Ontario, and Its Extensions; In: Bulletin of the Geological Society of America vol. 45 p. 479-505
Publication Number: GSA Bull v.45 Scale: Date: 1934
Author: Pettijohn, F.J.
Publisher Name: Geological Society of America
Location:
Mono - Building and ornamental stone inventory in the districts of Kenora and Rainy River
Publication Number: MDC027 Scale: Date: 1986
Author: Storey C.C.
Publisher Name: Ontario Geological Survey
Location:
Part - Geology of the Sioux Lookout area
Publication Number: ARV41-06.001 Scale: Date: 1998
Author: Hurst M.E.
Publisher Name: Ontario Dept. of Mines
Location:
MonoMap - Geology of the Vermilion-Abram lakes area, District of Kenora
Publication Number: R101 Scale: Date: 1972
Author: Johnston F.J.
Publisher Name: Ontario Division of Mines
Location:
Part - Second report on the gold fields of western Ontario
Publication Number: ARV05.002 Scale: Date: 1998
Author: Coleman A.P.
Publisher Name: Ontario Bureau of Mines
Location:
MonoMap - Geology of the western Minnitaki Lake area, District of Kenora
Publication Number: R075 Scale: Date: 1969
Author: Johnston F.J.
Publisher Name: Ontario Dept. of Mines
Location:
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For detailed information regarding this mineral record please contact the Kenora Resident Geologist District Office