Ontario Geological Survey
Permanent Link to this Record:
MDI42C03SE00005
| Record Name(s) | Alotta Resources Pyritic Zone - 1987 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 2001-Aug-14 |
| Date Last Modified | 2022-Sep-16 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Franchere
Latitude: 48° 0' 39.62" Longitude: -85° 11' 32.51"
UTM Zone: 16 Easting: 634810.44 Northing: 5319104.24 UTM Datum: NAD83
Resident Geologist District: Sault Ste. Marie
NTS Grid: 42C03SE
Point Location Description: Grab sample in SW corner of claim SSM 992047
Location Method: Based on Assessment
Access Description: The site is accessible by helicopter from Wawa.
1983: MacMillan Energy Corp. - airborne geophysics. 1987-89: Alotta Resources Ltd. - airborne geophysics, prospecting, mapping, soil survey. 1994: MacMillan Gold Corp./Granges Inc. - airborne geophysics.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| WP Franchere-6 | 42C03SE0004 | 42C03SE0004 |
| WP Mishibishu Lake.42 | 42C03SE2001 | 42C03SE2001 |
| WP Groseilliers-1 | 42C03SE0010 | 42C03SE0010 |
| WP Franchere-3 | 42C03SE0008 | 42C03SE0008 |
| 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 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 lava flow-unsubdivided | 1 | Host |
|---|---|---|---|---|
| Intermediate lava flow-unsubdivided | 2 | Host |
Dec 07, 2005 (A Wilson) - Elevated gold values have been returned from a narrow pyritic zone holsted in intercalated mafic to intermediate tuffs. These rocks are altered to carbonate and chlorite.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Gangue |
Dec 07, 2005 (A Wilson) - Selected grab samples from the zone returned assays up to 0.33 oz/t Au.
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 - 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:
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