Ontario Geological Survey
Permanent Link to this Record:
MDI42C03SW00007
| Record Name(s) | Hollinger Showing - 1936, Mishi Lake Claims - 1937, L. Vansickle Option - 1937, Macassa-Bishu - 1985 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1984-Nov-30 |
| Date Last Modified | 2022-Sep-27 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Mishibishu Lake Area
Latitude: 48° 5' 18.48" Longitude: -85° 22' 34.53"
UTM Zone: 16 Easting: 620914.91 Northing: 5327408.32 UTM Datum: NAD83
Resident Geologist District: Sault Ste. Marie
NTS Grid: 42C03SW
Point Location Description: Trenches on former claim SSM 554654
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 site. The showing is located approximately 4 km SE of the mill. The site is most easily accessible by helicopter or fixed wing aircraft from Wawa.
1937 - 38: Hollinger Consolidated Gold Mines Ltd. - mapping, trenching, stripping, 12 ddh (3107 ft). 1946 -51: Amichi Gold Mines Ltd. - diamond drilling. 1980-85: Westfield Minerals Ltd. and St. Fabien Exploration Co. - geochemistry, mapping, sampling, ground geophysics, eight 10 lb bulk samples collected, 9 ddh (1887 ft). 1983: MacMillan Energy Co. - airborne geophysics.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| Mishibishu Lake 0017 | 42C03SW0116 | 42C03SW0116 |
| Mishibishu Lake 0025 | 42C03SW0108 | 42C03SW0108 |
| Mishibishu Lake 0023 | 42C03SW0109 | 42C03SW0109 |
| Mishibishu Lake 0014 | 42C03SW0120 | 42C03SW0120 |
| Groseilliers-0015 | 42C03SE0013 | 42C03SE0013 |
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 Mishibishu Deformation Zone (MDZ) is the largest of the deformation zones int he 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 and clastic metasediments to the south. The eastern MDZ strikes approximately 340 east of the Feather River and 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 discrete than in the central MDZ. Stretching lineations plunge to the east. The style of deformation is more brittle-ductile in the easter MDZ compared to the central MDZ. Alteration is less pervasive than, yet similar to, other zones within the belt. The occurrence lies near the southern, gradational boundary of the MDZ.
| Rock Type | Rank | Composition | Texture | Relationship | Vein | 1 | Quartz | Host |
|---|---|---|---|---|
| Schist-Unsubdivided | 2 | Quartz-Sericite-Chlorite-Carb | Host |
Dec 07, 2005 (A Wilson) - The host rocks consist of strongly foliated quartz-sericite-chlorite-ankerite schists that are commonly kinked and crenulated. Pyrite is common as discrete cubes within either chlorite-rich bands or quartz-ankerite-rich bands. Green mica is found locally, particularly toward the south.
| 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 | Arsenopyrite | Economic | Gangue | ||||
| 3 | Ankerite | Economic | Gangue | ||||
| 4 | Galena | Economic | Gangue | ||||
| 5 | Chalcopyrite | Economic | Gangue | ||||
| 6 | Sphalerite | Economic | Gangue | ||||
| Ankerite | Alteration | Carbonatization | 1 | Strong | Replacement | ||
| Sericite | Alteration | Sericitization | 2 | Strong | Replacement | ||
| Chlorite | Alteration | Chloritic | 3 | Medium | Replacement | ||
| Limonite | Alteration | Carbonatization | 4 | Medium | Replacement |
Dec 07, 2005 (A Wilson) - Samples collected by Hollinger in 1934 from various trenches returned assays ranging from 0.004 oz/t Au over 12 inches to 1.40 oz/t Au over 12 inches. Grab samples collected by Hollinger in 1959 returned assays ranging from 0.14 oz/t Au over 6 ft to 2.86 oz/t Au. Best result of bulk sampling by Westfield was 1.40 oz/t au over 12 inches The highest grad gold values appear to be related to pod-like discontinuous quartz veins. Grab samples collected by the OGS in 1968 returned assays of 0.82 oz/t Au and 0.40 oz/t Au.
| Rank | Characteristic |
|---|---|
| 1 | Sheared |
| 2 | Vein |
| Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
|---|---|---|---|---|---|---|---|---|---|
| Regular | 335 | 122 | 70 | 85 |
Date: Oct 16, 2001
Geologist: A Wilson
Notes: The showing consists of a series of quartz veins and stringers which crop out over a strike length of 335 m and a width of 122 m, within a highly altered and deformed package of volcanic and sedimentary rocks. Several styles and possibly generations of quartz vein mineralization are apparent at this occurrence. A) massive quartz pods up to 10's of metres in length and several metres in width. B) quartz-ankerite veins oriented parallel to the penetrative foliation. C) thick saddles in the noses of folded foliation. D) quartz-ankerite veins axial planar to small scale folds and kink bands. Both Hollinger and Westfield geologists have recognized irregular limonite-rich zones which commonly surround quartz veins in the trenches and extend to depths up to 9 m. Locally the veins associated with this alteration return low gold assays near surface and high gold assays at a few metres depth. There is the suggestion that surface leaching of the gold may locally be an important factor in surface sampling.
File - Resident Geologist files Mishibishu Lake 0020
Publication Number: Date:
Author:
Publisher Name:
Location: SSM RGP office
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:
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:
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 - 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:
Part - Iron ranges of Michipicoten West
Publication Number: ARV14-01.012 Date: 1998
Author: Bell J.M.
Publisher Name: Ontario Bureau 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:
MonoMap - Geology of the Pukaskwa River-University River area, districts of Algoma and Thunder Bay
Publication Number: R153 Page: 48-49 Date: 1977
Author: Bennett G., Thurston P.C.
Publisher Name: Ontario Division of Mines
Location:
Article - Gold showings of the Mishibishu Lake area, Thunder Bay District
Publication Number: MP126.015S Page: 88 Date: 1997
Author: Heather K.B.
Publisher Name: Ontario Geological Survey
Location:
Mono - Wawa mineral deposits data base
Publication Number: OFR5775 Page: 285 Date: 1991
Author: Frey E.D., Stewart R.C.
Publisher Name: Ontario Geological Survey
Location:
Mono - Geology, structure and economic geology of the Mishibishu Lake area
Publication Number: OFR5774 Page: 220-224 Date: 1991
Author: Reid R.G., Bowen R.P., Reilly B.A., Logothetis J., Heather K.B.
Publisher Name: Ontario Geological Survey
Location:
Part - Geology of the Mishibishu Lake area
Publication Number: ARV49-09 Page: 12 Date: 1997
Author: Evans E.L.
Publisher Name: Ontario Dept. of Mines
Location:
Book - Sudbury Timmins Algoma Mineral Program, Project 1: mineral inventory of the Sudbury-Timmins-Sault Ste. Marie region, Ontario
Publication Number: GSC OF 1087 Page: 102 Date: 1985
Author: Rose, D. G.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/129999
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