Ontario Geological Survey
Permanent Link to this Record:
MDI42C03SW00042
| Record Name(s) | Harper Showing - 1997, Areseno Creek Showing - 1987, University Zone - 1987, Asarco Conductor 22 East - 1973 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 2001-Aug-20 |
| Date Last Modified | 2022-Sep-13 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: St. Germain
Latitude: 48° 2' 45.31" Longitude: -85° 16' 6.34"
UTM Zone: 16 Easting: 629050.74 Northing: 5322854.54 UTM Datum: NAD83
Resident Geologist District: Sault Ste. Marie
NTS Grid: 42C03SW
Point Location Description: Exposure in Arseno Creek bed
Location Method: Based on Assessment
Access Description: The site is accessible by helicopter from Wawa.
1973: Asarco Exploration Co. - airborne geophysics, mapping, sampling. 1984-94: MacMillan Gold Corp/Granges Inc. - airborne geophysics, ground geophysics, soil sampling, stream sediment sampling, prospecting, mapping, 5 ddh (338.72 m). 1997: Mishibishu Gold Corporation/MacMillan Gold Corp. - soil survey, mapping.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| Groseilliers-0015 | 42C03SE0013 | 42C03SE0013 |
| WP St. Germain-4 | 42C03SE0001 | 42C03SE0001 |
| WP St. Germain-5 | 42C03SW0003 | 42C03SW0003 |
| ST GERMAIN 0010 | ||
| WP Mishibishu Lake.48 | 42C03SW0024 | 42C03SW0024 |
| 42C03SW0028 | 42C03SW8783 | 42C03SW8783 |
| WP Mishibishu Lake.42 | 42C03SE2001 | 42C03SE2001 |
| WP St. Germain-6 | 42C03SW2001 | 42C03SW2001 |
Province: Superior
Subprovince: Wawa
Terrane: Wawa-Abitibi
Belt: Mishibishu Lake
Geological Age: Neoarchean Geochronological Age: 2.7 GA Geochron. Age Ref.: GOO VOL 1 P. 494
Dec 07, 2005 (A Wilson) - The Mishibishu Deformation Zone (MDZ) is the largerst 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 metavolcancis to the north, with clastic metasediments to the south. The Eastern Mishibishu Deformation Zone becomes narrower approaching Lake Superior where the zone transects the external granitoids east of the greenstone belt. Deformation and alteration are less pervasive and shear zones become more dicrete than in the central MDZ. Stretchin lineations plunge to the east. The style of deformation is more brittle-ductile in the eastern MDZ. Alteration is less pervasive than, yet similar to, other zones within the belt.
| Rock Type | Rank | Composition | Texture | Relationship | Mafic Tuff | 1 | Amphibolitized | Tuff | Host |
|---|---|---|---|---|
| Schist-Unsubdivided | 2 | Quartz-Feldspar | Host | |
| Sandy Mudstone | 3 | Greywacke, Argillite | Near |
Dec 07, 2005 (A Wilson) - At depth, elevated gold values are returned from a quartz sericite schist which occurs at the contact between amphibolitized mafic tuffs and overlying argillite/greywacke. Quartz veining is present but minor.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Arsenopyrite | Economic | Gangue | ||||
| 2 | Pyrite | Economic | Gangue | ||||
| 3 | Pyrrhotite | Economic | Gangue |
Dec 07, 2005 (A Wilson) - Grab samples at surface returned values raning from 850 ppb Au to 4400 ppb Au. Elevated gold values have been returned from drill core. These values range from 0.95 g/t au over 4.88 m to 2.96 g/t Au over 4.26 m.
| Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
|---|---|---|---|---|---|---|---|---|---|
| Regular | 150 | 25 | 250 | 75 |
Date: Aug 20, 2001
Geologist: A Wilson
Notes: The mafic tuffs in this area strike 250 and dip 70 to 80 north. Two outcrops in the immediate area display fold axial planes that have a similar strike but dips 70 south. The fold axes plunge 20 to the NE. Mineralized extensions may be related to the attitutde of the axial plane.
File - Resident Geologist files WP Mishibishu Lake.40, St. Germain-0010
Publication Number: Date:
Author:
Publisher Name:
Location: SSM RGP office
Folio - St. Germain Township, Sault Ste. Marie Mining Division, NTS No. 42C/03S
Publication Number: GDIF591 Date: 1997
Author: Wawa RGO
Publisher Name: Ontario Geological Survey
Location:
Map - Precambrian geology, Mishibishu Lake area, Dog Harbour sheet
Publication Number: P3157 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 - 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:
Mono - Geology, structure and economic geology of the Mishibishu Lake area
Publication Number: OFR5774 Page: 153-154, 159-160 Date: 1991
Author: Reid R.G., Bowen R.P., Reilly B.A., Logothetis J., 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 - 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:
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:
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