Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI41N14NE00004

Record: MDI41N14NE00004

General

Mineral Record Identification
Record Name(s) Mystery Showing - 1988
Related Record Type Simple
Related Record(s)
Record Status Occurrence
Date Created 1991-Jan-08
Date Last Modified 2022-Sep-16
Created By
Revised By

Commodities

Primary Commodities: Gold



Location

Township or Area: Franchere

Latitude: 47° 58' 11.13"    Longitude: -85° 9' 42.91"

UTM Zone: 16    Easting: 637190.21   Northing: 5314573.95    UTM Datum: NAD83

Resident Geologist District: Sault Ste. Marie

NTS Grid: 41N14NE

Point Location Description: Stripped area

Location Method: Based on Assessment

Access Description: Access to the area is by helicopter from Wawa or by boat from Michipicoten Harbour and then by overland traverse.



Exploration History

1983-1989: New Beginnings Resources Inc. - airborne geophysics, ground geophysics, mapping, stripping, soil survey, IP survey, 4 ddh (1350.8 ft).


Assessment Work on File

Assessment Work on File
Office File Number Online Assessment File Identifier Online Assessment File Directory
WP Franchere-4 41N14NE0009 41N14NE0009
WP Franchere-9 41N14NE0015 41N14NE0015
WP Franchere-1 41N14NE0500 41N14NE0500
WP Franchere-2 41N14NE0002 41N14NE0002

Geology

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



Geology Comments

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.




Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
Schist-Unsubdivided 1 Quartz-Sericite Host
Mafic Tuff 2 Tuff Footwall
Intermediate Crystal Tuff 3 Crystal Tuff Hanging Wall

Lithology Comments

Dec 07, 2005 (A Wilson) - The showing consists of a highly sheard quarz-sericite schist with up to 30% finely disseminated arsenopyrite within silicified intermediate metavolcanic crystal tuffs. The footwall consists of intercalated mafic metavolcanic tuffs and tuff breccias and quartz diorite sills. Highly silicified sericitic intermediate crystal tuffs with discontinuous quartz-carbonate stringers intercalated with mafic tuff-breccia lenses on the hanging wall.




Mineralization

Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Alteration Style
1GoldEconomicOre
1ArsenopyriteEconomicGangue
2TourmalineEconomicGangue
3PyriteEconomicGangue
4PyrrhotiteEconomicGangue
5ChalcopyriteEconomicGangue

Mineralization Comments

Dec 07, 2005 (A Wilson) - Grab samples returned values up to 2.86 oz/t Au. Diamond drilling by New Beginnings returned only trace gold.



Mineral Record Details

Characteristics
Rank Characteristic            
1 Sheared
2 Vein

Mineral Zones - Size and Shape

Rank: 1       Structure Type: Shear

Rank: 2       Structure Type: Vein

Zone Name: Detour Lake - Rank 1
Shape Length Thickness Depth Strike Dip Plunge Trend Age Reference
Regular 4.5 .3

Site Visit Information

Date: Aug 13, 2001

Geologist: A Wilson

Notes: The showing is confined to the intersection between two minor faults within the quartz sericite schist.



References

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 - 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:


Mono - Wawa mineral deposits data base

Publication Number: OFR5775 Page: 202-203  Date: 1991

Author: Frey E.D., Stewart R.C.

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:


Mono - Geology, structure and economic geology of the Mishibishu Lake area

Publication Number: OFR5774 Page: 162  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:


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For detailed information regarding this mineral record please contact the Sault Ste. Marie Resident Geologist District Office