Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42B01SW00003

Record: MDI42B01SW00003

General

Mineral Record Identification
Record Name(s) Kerr-Addison (Stack Vein) - 1984, J.E. Lefever - 1984, Silams - 1936, Stack Vein - 1949, Lefever - 1959, Kerr Addison Stack Vein - 1984
Related Record Type Simple
Related Record(s)
Record Status Occurrence
Date Created 1992-Jun-30
Date Last Modified 2022-Nov-03
Created By
Revised By

Commodities

Primary Commodities: Gold



Location

Township or Area: Horwood

Latitude: 48° 2' .53"    Longitude: -82° 18' 15"

UTM Zone: 17    Easting: 402778.862   Northing: 5320844.164    UTM Datum: NAD83

Resident Geologist District: Timmins

NTS Grid: 42B01SW

Point Location Description: The B trench system 150m northwest of the main trench exposing the vein

Location Method: Field Visit with GPS

Access Description: The showing is 87km west southwest of Timmins and access is possible via Highway 101 to the Groundhog Lake - Horwood Lake access road / Highway 616. From this point a gravel road extends south for 11km to a landing on Horwood Lake. A 7km boat trip from the landing is then required to reach the east shore some 600m north of the showing which must be traversed.



Exploration History

1936 P.H. Silams initially staked the ground. Between this date and 1959 a series of trenches and pits had been dug over a 300m strike length but no records of this work exist. 1959 Kerr Addison optioned the property from J. Lefever and carried out a magnetic survey and short drill program. Grab samples returned up to 145 g/tonne gold and 23 g/tonne gold over 3cm in core from the veins. The vein was found to be series of discontinuous stringers. 1980 Raise Contracting and Ingamar Exploration over the next two years carried out a magnetic and VLF geophysical survey combined with a limited mapping program. 1986 Pelangio Larder Mines Ltd carried out an exploration program over the next three years which consisted of Magnetic, VLF-EM, and IP geophysical surveys, and a geological mapping program. This work found that the vein consists of a central quartz vein in chlorite carbonate sulphide schist. A maximum value of 30 g/tonne gold was returned in the schist associated with quartz carbonate stringers.


Assessment Work on File

Assessment Work on File
Office File Number Online Assessment File Identifier Online Assessment File Directory
T-2712, 2.10441 42B01SE0045 42B01SE0045
T-2123, 17 42B01SE0069 42B01SE0069

Geology

Province: Superior

Subprovince: Abitibi

Terrane: Wawa-Abitibi

Belt: Swayze

Geological Age: Neoarchean   Geochronological Age: 2700 MA   Geochron. Age Ref.: GOO VOL 1

Metamorphism Type: Regional

Metamorphism Grade: Greenschist



Geology Comments

Dec 07, 2005 (S Fumerton) - Minor shearing is associated with the veins which trend 120.




Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
Vein 1 Quartz-Carbonate Host
Diorite 2 Diorite Host
Mafic lava flow-unsubdivided 3 Basalt Tholeiitic Fe, Pillowed, Tuff N/A
Vein 4 Quartz-Carbonate Contains

Lithology Comments

Dec 07, 2005 (S Fumerton) - The surrounding rocks consist of a northeasterly trending sequence of Fe tholeiitic metavolcanics. In the area the sequence is dominated by medium to coarse grained massive flows though there are intercalated horizons of fine grained flows, pillowed flows, and various tuffaceous rocks. The veins trend to the northwest and are hosted in a fine grained mafic flow with a series of subparallel anatomising chloritic shears within a metre of the veins.




Mineralization

Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Alteration Style
1PyriteEconomicGangue
2PyrrhotiteEconomicGangue
ChloriteAlterationChloritic1WeakNetwork

Mineralization Comments

Dec 07, 2005 (S Fumerton) - The Stack vein consists of a series of narrow quartz carbonate or fine grained cherty veins which are hosted in fine grained and medium grained mafic flows. At the northwest end (Trench B), the vein consists of a 15cm fine grained cherty quartz carbonate vein with a 4cm coarse quartz vein on the contact. Bleaching of the host rock extends 10cm from these veins and chloritic shears extend 2m. In the centre (Trench G) there are a number of quartz carbonate veins with abundant sulphides locally. One vein in this locality is up to 20cm thick.



Assay Samples

Assay Samples
CommodityAnalytical MethodDigestion Method ResultUnitLimitQualifier
GoldUnknown.03ppm
GoldUnknown2.78ppm
GoldUnknown.58ppm
SilverUnknown.35ppm
SilverUnknown.035ppm
SilverUnknown.35ppm

Mineral Record Details

Classification
RankClassification            
5 Mesothermal
Characteristics
Rank Characteristic            
5 Vein

Mineral Zones - Size and Shape

Rank: 5       Structure Type: Shear

Zone Name: Detour Lake - Rank 1
Shape Length Thickness Depth Strike Dip Plunge Trend Age Reference
Tabular 400 300 N/A N/A

Site Visit Information

Date: Jun 30, 1992

Geologist: S Fumerton

Notes: There are a series of old trenches over a three hundred metre strike length. The northwestern trench has been cleaned out and series of sawn channel samples have been collected.



References

File - Resident Geologist files T-890, T-1976, T-2430, T-2737

Publication Number: Date:

Author:

Publisher Name:

Location: Timmins RGP office


Map - Horwood Lake, Sudbury District

Publication Number: M2329 Scale: 1:31,680    Date: 1975

Author: Breaks F.W.

Publisher Name: Ontario Division of Mines

Location:


Publication - Sudbury Timmins Algoma Mineral Program, Project 1: mineral inventory of the Sudbury-Timmins-Sault Ste. Marie region, Ontario

Publication Number: GSC OF 1087 Date: 1985

Author: Rose, D.G.

Publisher Name: Geological Survey of Canada

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


File - Resident Geologist files 1946, air photo

Publication Number: Date: 1996

Author:

Publisher Name:

Location: Timmins RGP office


Part - Geology of the Horwood Lake area

Publication Number: ARV46-02 Page: 25  Date: 1997

Author: Harding W.D.

Publisher Name: Ontario Dept. of Mines

Location:


MonoMap - Geology of the Horwood Lake Area, Sudbury District

Publication Number: R169 Page: 48  Date: 1978

Author: Breaks F.W.

Publisher Name: Ontario Geological Survey

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: 57  Date: 1979

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

Publisher Name: Ontario Geological Survey

Location:


MonoMap - Mineral Prospects of the Swayze Greenstone Belt (Volume 1, Parts of NTS 41 O and Volume 2, Parts of NTS 41 P, 42 A and 42 B)

Publication Number: OFR5912 Page: 601-603  Date: 1995

Author: Fumerton S.L., Houle K.A.

Publisher Name: Ontario Geological Survey

Location:


Book - Horwood Township - unpublished GDIF

Publication Number: GDIF Date: 1990

Author: Resident Geologist Staff

Publisher Name:

Location: Timmins RGP


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For detailed information regarding this mineral record please contact the Timmins Resident Geologist District Office