Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42B05NW00004

Record: MDI42B05NW00004

General

Mineral Record Identification
Record Name(s) Jenner Vein - 1947, Jenner Prospect - 1979, Leeson ‘40 Claims - 1948, Claim SSM35251 - 1948
Related Record Type Simple
Related Record(s)
Record Status Occurrence
Date Created 1980-Nov-03
Date Last Modified 2022-May-18
Created By
Revised By

Commodities

Primary Commodities: Gold

Secondary Commodities: Silver



Location

Township or Area: Leeson

Latitude: 48° 24' 21.75"    Longitude: -83° 49' 56.64"

UTM Zone: 17    Easting: 290389   Northing: 5365308.01    UTM Datum: NAD83

Resident Geologist District: Sault Ste. Marie

NTS Grid: 42B05NW

Point Location Description: Vein in northern part of patented claim S35251

Location Method: Data Compilation

Access Description: The site is most easily accessed by float plane from Wawa to Leeson Lake. Alternatively, the site can be accessed by traverse from the former Renabie mine site.



Exploration History

1940: Jenner - discovery and sampling. 1947-48: Macassa Mines Ltd. - mapping, 2 ddh (205 ft). 1984-86: M. Shunock/Junior Mine Contracting Ltd. - ground geophysics, mapping, sampling, trenching. 1985: North Gold Fields Resources Inc. - mapping, stripping, sampling, geochemistry. 1988: Tenoga Consultants Inc. - airborne geophysics, ground geophysics.


Assessment Work on File

Assessment Work on File
Office File Number Online Assessment File Identifier Online Assessment File Directory
WP Leeson.6/2.10934 42B05NW0001 42B05NW0001
Leeson 0014A1/63A.55 42B05NW0050 42B05NW0050
Leeson 0029A1 / 2.6521 42B05NW0023 42B05NW0023
Leeson 0032A1/ 2.8820 20000005045 20000005045
WP Leeson.2/ 2.9702 42B05NW0010 42B05NW0010

Geology

Province: Superior

Subprovince: Wawa

Terrane: Wawa-Abitibi

Belt: Michipicoten

Tectonic Assemblage: Wawa

Geological Age: Archean  



Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
Vein 1 Quartz Host
Tonalite 2 Trondhjemite-Tonalite Sheared Contains
Mafic lava flow-unsubdivided 3 Sheared Adjacent

Lithology Comments

Aug 25, 2014 (A Wilson) - The quartz veins range in width from 10-25 feet. The veins are lenticular pipes that pinch and swell rapidly. The veins are predominantly composed of massive quartz. The best assays are returned from the most heavily pyritized portions of the vein. The veins are hosted by reddish intermediate intrusive rocks.




Mineralization

Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Alteration Style
1PyriteEconomicGangue
2GalenaEconomicGangue
3ChalcopyriteEconomicGangue

Mineralization Comments

Aug 25, 2014 (A Wilson) - A chip sample collected by Jenner in 1940 returned 0.23 oz/t Au over 2 feet. Diamond drilling by Macassa in 1947 intersected 0.24 oz/t Au over 3 feet. Grab samples collected by Macassa Mines Ltd. in 1948 returned assays ranging from 0.01 oz/t Au to 0.09 oz/t Au. Grab samples collected by North Gold Fields in 1985 returned assays up to 0.4 g/t Au and 2.1 g/t Ag. The best assays obtained by North Gold Fields returned assays of 1.16 g/t Au and 5.1 g/t Ag over 4.3 m.



Mineral Record Details

Classification
RankClassification            
1 Vein
Characteristics
Rank Characteristic            
1 Vein

Mineral Zones - Size and Shape

Rank: 2       Structure Type: Shear

Rank: 1       Structure Type: Vein

Zone Name: Detour Lake - Rank 1
Shape Length Thickness Depth Strike Dip Plunge Trend Age Reference
Regular 182.9 13.7 90

Site Visit Information

Date: Jun 20, 2001

Geologist: A Wilson

Notes: At its southeastern end, the vein widens to over 30 feet in width. The vein is interpreted to be part of a silicified shear zone.


Date: Jun 21, 2001

Geologist: A Wilson

Notes: The Jenner appears to be associated with several separate structures. At the north end, there is a zone of N60W trending quartz veining that dips steeply south. About 20 m to the south, a second N60W structure is associated with a diabase dike and includes a sheared, chloritized and silicified zone. A third shear zone lies 9 m to the SW. This zone is about 2.5 m in width, sheared, chloritized and silicified. The vein displays evidence of folding. The folds rake to the west at 40 degrees.



References

Map - Renabie Mines Limited, Nudulama Mines Limited and adjoining properties, surface geology, parts of Rennie, Leeson and Brackin townships, District of Sudbury

Publication Number: P0492 Scale: 1:6,000    Date: 1997

Author: Ferguson S.A.

Publisher Name: Ontario Dept. of Mines

Location:


Map - Geological series, Operation Chapleau, Missinaibi Lake sheet, districts of Algoma and Sudbury

Publication Number: P0672 Scale: 1:126,720    Date: 1997

Author: Thurston P.C., Siragusa G.M., Sage R.P.

Publisher Name: Ontario Dept. of Mines and Northern Affairs

Location:


Mono - Wawa mineral deposits data base

Publication Number: OFR5775 Page: 245-246  Date: 1991

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

Publisher Name: Ontario Geological Survey

Location:


Map - Rennie-Leeson area, District of Sudbury, Ontario

Publication Number: ARM51G Scale: 1:31,680    Date: 1997

Author: Bruce E.L., Horwood H.C.

Publisher Name: Ontario Dept. of Mines

Location:


Mono - Gold deposits of Ontario, part 2, part of District of Cochrane, districts of Muskoka, Nipissing, Parry Sound, Sudbury, Timiskaming, and counties of southern Ontario

Publication Number: MDC018 Page: 70-71  Date: 1979

Author: Gordon J.B., Lovell H.L., de Grijs J.W., Davie R.F.

Publisher Name: Ontario Geological Survey

Location:


Book - Gold Occurrences of the Wawa-Missanabie Area, unpublished report

Publication Number: Robinson Page: 93  Date: 1983

Author: Robinson, D.

Publisher Name: Ontario Geological Survey

Location: Timmins RGP


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: 42B - 50  Date: 1985

Author: Rose, D. G.

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/129999


Part - Geology of the Rennie-Leeson area

Publication Number: ARV51-08.001 Date: 1997

Author: Bruce E.L.

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