Ontario Geological Survey
Permanent Link to this Record:
MDI42C03SW00011
| Record Name(s) | Magnacon No.1 and 2 Showings - 1983, Mordaunt Zone - 1991, Bishu Mines No. 1 & No. 2 Veins - 1951 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1991-Jan-08 |
| Date Last Modified | 2022-Sep-13 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Mishibishu Lake Area
Latitude: 48° 6' 8.52" Longitude: -85° 25' 14.42"
UTM Zone: 16 Easting: 617575.9 Northing: 5328884.32 UTM Datum: NAD83
Resident Geologist District: Sault Ste. Marie
NTS Grid: 42C03SW
Point Location Description: Trenches north of Magnacon Lake
Location Method: Based on Assessment
Access Description: Drive west along highway 17 from the junction of highway 17 and 101 for approximately 50 km to the Paint Lake Road (a gravel road heading south from highway 17). Drive south along the gravel road for approximately 55 km to the Eagle River Mill and Magnacon adit.
1945-55; Bishu Mines Ltd. - mapping, prospecting, trenching, stripping, 28 ddh (9576 ft). 1960: Magnacon Mines Ltd. - property acquisition. 1983-84: Westfield Minerals Ltd. - mapping, geochemistry, trenching, stripping, ground geophysics, 21 ddh (11,801 ft). 1985-87: Muscocho Explorations Ltd. - mapping, diamond drilling.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| Mishibishu Lake 0011 | 42C03SW0124 | 42C03SW0124 |
| Mishibishu Lake 0014 | 42C03SW0120 | 42C03SW0120 |
| MISHI LAKE 30 | ||
| WP MISHI LK.16 | ||
| WP MISHI LK.17 | ||
| WP Mishibishu Lake.8 | 42C03SW0088 | 42C03SW0088 |
Province: Superior
Subprovince: Wawa
Terrane: Wawa-Abitibi
Belt: Michipicoten
Tectonic Assemblage: Catfish
Geological Age: Neoarchean Geochronological Age: 2.7 GA Geochron. Age Ref.: GOO VOL 1
Dec 07, 2005 (A Wilson) - All of the mineralized zones occur in the most highly strained portion of the Mishibishu Deformation Zone. The tectonic-stratigrapy strikes at 115 and dips at 45 degrees north. The Magnacon mineralized zone has a chlorite dominated structural hanging wall and a sericite dominated structural footwall. The Mishibishu Deformation zone is the largest of the deformation zones in the belt, measuring approximately 40 km in length and several hundred metres up to 1.5 km in width. The zone is located north of the Mishibishu Lake Stock and lies along the lithological contact of mafic metavolcanic rocks to the north (hanging wall) with clastic metasediments to the south (footwall) The Western MDZ is that portion of the deformation zone west of Macassa Creek. The showing is closely associated with a NNE trending fault.
| Rock Type | Rank | Composition | Texture | Relationship | Schist-Unsubdivided | 1 | Quartz-Sericite | Host |
|---|---|---|---|---|
| Vein | 2 | Quartz | Host |
Dec 07, 2005 (A Wilson) - All primary rock textures have been destroyed by intense alteration and deformation. The mafic metavolcanic rocks now consist of chlorite-calcite schists, which grade into chlorite-ankerite and sericite schists toward the mineralized zones. The metasedimentary rocks are now variable quartz-sericite-chlorite-ankerite-calcite schists, which are more sericitic in proximity to the mineralized zones. Some of the porphyry dikes are cut by the mineralization, but none are known to cut the mineralization. The feldspar porphyry dikes are texturally similar to the feldspar porphyry dikes associated with the Mishibishu Lake Stock.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Gold | Economic | Ore | ||||
| 1 | Pyrite | Economic | Gangue | ||||
| 2 | Galena | Economic | Gangue |
Dec 07, 2005 (A Wilson) - The best assay from diamond drilling completed by Bishu Mines was 1.09 oz/t au over 7 ft. Grab samples collectedby Westfield from old trenches returned assays of 1.52 oz/t Au, 0.085 oz/t Au, 0.82 oz/t Au. Mineralization consists of auriferous quartz+ankerite+arsenopyrite+pyrite+galena+chalcopyrite+tourmaline veins which form zones from several cm up to serval m in width. Individual veins range in width from several cm up to several m with the larger ones showing evidence of crack-seal textures. The mineralized zone appears to cut obliquely across the general foliation trend within the MDZ.
File - Resident Geologist files WP Mishibishu Lake.16, WP Mishibishu Lake.17, Mishibishu Lake 0030
Publication Number: Date:
Author:
Publisher Name:
Location: SSM RGP office
Map - Geological series, Precambrian geology, Mishibishu Lake area, northeastern section, districts of Thunder Bay and Algoma
Publication Number: P2970 Scale: 1:15,840 Date: 1986
Author: Bowen R.P., Logothetis J., Heather K.B.
Publisher Name: Ontario Geological Survey
Location:
Folio - Mishibishu Lake area, Sault Ste. Marie Mining Division, NTS No. 42C/03SW
Publication Number: GDIF597 Date: 1997
Author: Wawa RGO
Publisher Name: Ontario Geological Survey
Location:
Map - Marginal notes, Mishibishu Lake area
Publication Number: P3184 Date: 1992
Author: Reid R.G., Bowen R.P., Heather K.B., Logothetis J., Reilly B.A.
Publisher Name: Ontario Geological Survey
Location:
Article - Gold showings of the Mishibishu Lake area, Thunder Bay District
Publication Number: MP126.015S Page: 85-86 Date: 1997
Author: Heather K.B.
Publisher Name: Ontario Geological Survey
Location:
Map - Precambrian geology, Mishibishu Lake area, Mishibishu Lake sheet
Publication Number: P3152 Scale: 1:15,840 Date: 1992
Author: Reid R.G., Bowen R.P., Heather K.B., Logothetis J., Reilly B.A.
Publisher Name: Ontario Geological Survey
Location:
Map - University River, Algoma and Thunder Bay districts
Publication Number: M2333 Scale: 1:63,360 Date: 1976
Author: Bennett G., Thurston P.C., Giguere J.F.
Publisher Name: Ontario Division of Mines
Location:
Mono - Wawa mineral deposits data base
Publication Number: OFR5775 Page: 287 Date: 1991
Author: Frey E.D., Stewart R.C.
Publisher Name: Ontario Geological Survey
Location:
Map - Operation Pukaskwa, University River sheet, districts of Thunder Bay and Algoma
Publication Number: P0507 Scale: 1:63,360 Date: 1997
Author: Bennett G., Thurston P.C., Giguere J.F.
Publisher Name: Ontario Dept. of Mines
Location:
MonoMap - Geology of the Pukaskwa River-University River area, districts of Algoma and Thunder Bay
Publication Number: R153 Page: 5-51 Date: 1977
Author: Bennett G., Thurston P.C.
Publisher Name: Ontario Division of Mines
Location:
Map - Operation Pukaskwa, districts of Algoma and Thunder Bay
Publication Number: P0541 Scale: 1:126,720 Date: 1997
Author: Bennett G., Thurston P.C., Giguere J.F.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Geology, structure and economic geology of the Mishibishu Lake area
Publication Number: OFR5774 Page: 192-210 Date: 1991
Author: Reid R.G., Bowen R.P., Reilly B.A., Logothetis J., Heather K.B.
Publisher Name: Ontario Geological Survey
Location:
Article - Mineralization of the Mishibishu Lake greenstone belt
Publication Number: MP132.059 Page: 284-287 Date: 1997
Author: Heather K.B.
Publisher Name: Ontario Geological Survey
Location:
Map - Mishibishu Lake area, District of Thunder Bay, Ontario
Publication Number: ARM49J Scale: 1:63,360 Date: 1997
Author: Evans E.L.
Publisher Name: Ontario Dept. of Mines
Location:
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