Ontario Geological Survey
Permanent Link to this Record:
MDI42C03SW00055
| Record Name(s) | Marten Shear - 1989 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Prospect |
| Date Created | 2001-Oct-26 |
| Date Last Modified | 2022-Sep-13 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Mishibishu Lake Area
Latitude: 48° 1' 53.94" Longitude: -85° 24' 15.34"
UTM Zone: 16 Easting: 618960.62 Northing: 5321049.88 UTM Datum: NAD83
Resident Geologist District: Sault Ste. Marie
NTS Grid: 42C03SW
Point Location Description: Trenched area south of Pillow Lake (local name)
Location Method: Based on Assessment
Access Description: The property is accessible via the Eagle River Mine Road. This site is located approximatley 35 to 45 km south on the Eagle River Mine road and then overland by a skidder road and ATV trails.
1987: San Paulo Exploration Ltd. - airborne geophysics. 1988-90: Noranda Exploration Co Ltd. - trenching, diamond drilling 19 ddh (1896 m), stripping. 1996-98: Murgor Resources Inc. - prospecting, sampling, compilation, ground geophysics, trenching, mapping, 14 ddh (1496.5 m). 1998-99: Battle Mountain Gold - trenching, geochemistry, mapping.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| WP Mishibishu Lake.62 | 42C03SW2008 | 42C03SW2008 |
| WP Mishibishu Lake.56 | 42C03SW2002 | 42C03SW2002 |
| WP Mishibishu Lake.55 | 42C03SW0049 | 42C03SW0049 |
| WP Mishibishu Lake.46 | 42C04SE0025 | 42C04SE0025 |
| WP Mishibishu Lake.10 | 42C03SW0080 | 42C03SW0080 |
| WP Mishibishu Lake.30 | 42C03SW0549 | 42C03SW0549 |
| WP Mishibishu Lake.32 | 42C03SW0056 | 42C03SW0056 |
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) - The strike length of the RLDZ is 8 km and the maximum width is 1 km. The RLDZ is centred within a clastic metasedimentary rock sequence which exhibits sheared contacts with felsic intrusive rocks to the north and mafic metavolcanics to the south. The style of deformation and alteration observed in the RLDZ is similar to, yet not as intensely developed as the MDZ. The penetrative foliation strikes 285, dips moderately steeply to the north. Variable trending, moderately to steeply plunging stretchin lineations are commonly obscured or overprinted by crenulation lineattions. The RLDZ possesses structural characteristics similar to the other deformation zones in the belt. Felsic intrusive dikes/sills are common and concentrated within the central and northern parts of the zone, ranging in thickness from centimetres to several hundred metres.
| Rock Type | Rank | Composition | Texture | Relationship | Schist-Unsubdivided | 1 | Chlorite | Host |
|---|---|---|---|---|
| Mafic lava flow-unsubdivided | 2 | Hanging Wall | ||
| Terrigenous-Clastic-Unsubdivided | 3 | Footwall |
Dec 07, 2005 (A Wilson) - Gold mineralization occurs along the contact between volcanic and sedimentary rocks. This sericite, chlorite, carbonate and silica-altered, sulphide-bearing shear zone contains quartz veins ranging from <0.10 to 1.5 m wide and up to 100 m long.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Gangue | ||||
| 2 | Pyrrhotite | Economic | Gangue | ||||
| 3 | Arsenopyrite | Economic | Gangue | ||||
| Pyrite | Alteration | Sulphidation | 1 | Medium | Replacement | ||
| Sericite | Alteration | Sericitization | 2 | Medium | Replacement | ||
| Chlorite | Alteration | Chloritic | 3 | Medium | Replacement |
Dec 07, 2005 (A Wilson) - Grab samples collected along the strike of th eshear zone have returned assays of 8.9 g/t Au, 18. g/t au and 1.6 g/t Au. Chip samples have returned values of 3.77 g/t Au over 0.7 m and 1.03 g/t Au over 1.2 m. Diamond drilling intersected: 2.57 g/t Au over 1 m; 2.7 g/t Au over 2 m; 1.03 g/t Au over 1 m; 2.16 g/t Au over 5 m; 5.14 g/t Au over 7.7 m.
| Rank | Characteristic |
|---|---|
| 1 | Sheared |
| Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
|---|---|---|---|---|---|---|---|---|---|
| Regular | 2000 | 25 |
File - Resident Geologist files WP Mishibishu Lake.41
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 - 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 - 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 - 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 - 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 - 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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