Ontario Geological Survey
Permanent Link to this Record:
MDI42C03SW00016
| Record Name(s) | Millard Zone - 1984 |
|---|---|
| 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' 27.68" Longitude: -85° 26' 17.43"
UTM Zone: 16 Easting: 616260.89 Northing: 5329449.29 UTM Datum: NAD83
Resident Geologist District: Sault Ste. Marie
NTS Grid: 42C03SW
Point Location Description: Muscocho drill collars west of Macassa Creek
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 50 km to the turnoff to the Granges property. The site is accessible by overland traverse from this site.
1983-84: Westfield Minerals Ltd. - mapping, ground geophysics, geochemistry, diamond drilling (1 ddh). 1985-86: Muscocho Explorations Ltd. - diamond drilling (20 ddh, 10 775 ft). 1994 - MacMillan Gold Corp. and Granges Inc. - airborne geophysics.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| WPMISHI LAKE.16 | ||
| WPMISHI LAKE.17 | ||
| WP Mishibishu Lake.8 | 42C03SW0088 | 42C03SW0088 |
| WP Mishibishu Lake.42 | 42C03SE2001 | 42C03SE2001 |
| MISHI LAKE 30 |
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 Millard Zone is that portion of the Muscocho ground that lies west of Macassa Creek and the western property boundary. Macassa Creek is interpreted to be a NNE trending ductile shear zone that has been faulted.
| Rock Type | Rank | Composition | Texture | Relationship | Vein | 1 | Quartz | Host |
|---|---|---|---|---|
| Intermediate Tuff | 2 | Sheared Tuffs | Host | |
| Schist-Unsubdivided | 3 | Quartz-Sericite | Host |
Dec 07, 2005 (A Wilson) - The host rocks apears to be an intermediate-mafic schist. It is difficult to determine the correlation between the Millard Zone and the Curtis Zone (lying to the east) due to the geological complexity associated with Macassa Creek. Macassa Creek appears to be a sinistral-ductile shear zone which experienced brittle-dextral movement. The lithologies show a decreasing degree of deformation and alteration westward from Macassa Creek.
| 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 | Fuchsite | Economic | Gangue | ||||
| 3 | Chalcopyrite | Economic | Gangue | ||||
| 4 | Tourmaline | Economic | Gangue | ||||
| 5 | Arsenopyrite | Economic | Gangue |
Dec 07, 2005 (A Wilson) - Diamond drilling completed by Westfield in 1984, intersected 1.2 ft at 0.287 oz/t Au and 3 ft at 0.05 oz/t Au. Diamond drilling competed by Muscocho in 1986 intersected elevated gold values in intermediate schist and quartz-sericite schist. The highest values were 0.25 oz/t Au over 1.0 ft.
| Rank | Characteristic |
|---|---|
| 1 | Sheared |
| Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
|---|---|---|---|---|---|---|---|---|---|
| Irregular | 150 |
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:
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:
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:
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: 234-235 Date: 1997
Author: Heather K.B.
Publisher Name: Ontario Geological Survey
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:
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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