Ontario Geological Survey
Permanent Link to this Record:
MDI52E11NE00007
| Record Name(s) | Electrum Arsenic Zone - 1959 |
|---|---|
| Related Record Type | Partial |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1980-Jul-30 |
| Date Last Modified | 2022-May-16 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Ewart
Latitude: 49° 42' 37.37" Longitude: -95° 4' 1.59"
UTM Zone: 15 Easting: 350973.634 Northing: 5508481.254 UTM Datum: NAD83
Resident Geologist District: Kenora
NTS Grid: 52E11NE
Point Location Description: Au symbol above #4, east of Shoal Lake Road, on map 2069.
Location Method: Conversion from MDI
Access Description: The occurrence is located 2.7 km south of the junction of the Shoal Lake Road and Highway 17. A bush trail located 150m north of the intersection with the High Lake Road leads 400m east to the occurrence.
1959-61: surface work and ground geophysics. Unknown amount of DD in 11 holes. 1978: Unknown amount of DD. 1990-91: geological mapping, IP survey, sampling
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 63.3478 | 52E11NE9052 | 52E11NE9052 |
Province: Superior
Subprovince: Wabigoon
Belt: Lake of the Woods
Geological Age: Precambrian
Dec 07, 2005 (P Hinz) - The occurrence is at the contact between porphyry-invaded mafic flows and sediments of the overlying Crowduck Lake Group, which are predominantly conglomerate, but also include finer grained lithologies. Intrusion of the porphyry was in part coincident with uplift, erosion, and some porphyry breached the surface, with the result that pyroclastics are locally interbedded with the sediments. (Davies and Smith, 1988).
| Rock Type | Rank | Composition | Texture | Relationship | Quartz-Rich Granitoid | 1 | Adjacent |
|---|---|---|---|---|
| Vein | 2 | Contains |
Dec 07, 2005 (P Hinz) - The felsic intrusive is a porphyritic granodiorite. Other phases included tonalite and granodiorite. Gold-bearing quartz veins occupy fractures which post-date the porphyries and sediments. The fractures are complex and irregular, and are largely restricted to the extrusive porphyry; while there is no continuity to individual veins there may be a single zone of brittle fracture which acted as a zone of permeability for gold-bearing solutions. (Davies and Smith, 1988)
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Arsenopyrite | Economic | Ore | ||||
| 2 | Gold | Economic | Ore | ||||
| 3 | Pyrite | Economic | Ore | ||||
| 4 | Pyrrhotite | Economic | Ore | ||||
| 5 | Tourmaline | Economic | Ore |
Dec 07, 2005 (P Hinz) - Black tourmaline is abundant in places with pyrite, arsenopyrite and minor pyrrhotite are also associated with the gold. (Davies and Smith, 1988)
May 16, 2022 (Q Unknown) - Best intersections assayed: 0.44 opt Au over 3.0 m and 1.09 opt Au over 3.0m. Mineralization included py, po, cpy and visible gold.
Map - Ewart-Forgie area, Kenora District
Publication Number: M2069 Scale: 1:31,680 Date: 1997
Author: Davies J.C.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Ewart-Forgie area, Kenora District
Publication Number: M2069 Scale: 1:31,680 Date: 1997
Author: Davies J.C.
Publisher Name: Ontario Dept. of Mines
Location:
MonoMap - Geology of High Lake-Rush Bay area, District of Kenora
Publication Number: R041 Page: 38-40 Date: 1997
Author: Davies J.C.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Gold deposits of Ontario, part 1, districts of Algoma, Cochrane, Kenora, Rainy River, and Thunder Bay
Publication Number: MDC013 Page: 142 Date: 1971
Author: Ferguson S.A., Groen H.A., Haynes R.
Publisher Name: Ontario Dept. of Mines and Northern Affairs
Location:
Mono - The geological setting of gold occurrences in the Lake of the Woods area
Publication Number: OFR5695 Page: 98-100 Date: 1988
Author: Davies J.C., Smith P.M.
Publisher Name: Ontario Geological Survey
Location:
Mono - Report of Activities 1999, Resident Geologist Program, Red Lake Regional Resident Geologist Report: Red Lake-Kenora Districts
Publication Number: OFR6003 Page: 2, 16 Date: 2000
Author: Hinz P., Storey C.C., Gosselin S.D.M., Blackburn C.E., Kosloski L.
Publisher Name: Ontario Geological Survey
Location:
Thesis - Mineralization of the High Lake Pluton and Adjacent Country Rocks
Publication Number: PhD Thesis Date: 1976
Author: Pedora, J.M.
Publisher Name: University of Manitoba
Location: Kenora RGP Office
Compend - Summary of field work and other activities, 1987
Publication Number: MP137 Page: 61 Date: 1987
Author: Barlow R.B., Cherry M.E., Colvine A.C., Dressler B.O., White O.L.
Publisher Name: Ontario Geological Survey
Location:
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