Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42A08NE00167

Record: MDI42A08NE00167

General

Mineral Record Identification
Record Name(s)	St Joe-South - 1983, St. Joe Canada #2 - 1983, Gleeson-Rampton Property - 1983, Rc-83-83 - 1983
Related Record Type	Simple
Related Record(s)
Record Status	Occurrence
Date Created	1991-Mar-09
Date Last Modified	2023-Jan-27
Created By
Revised By

Commodities

Primary Commodities: Gold, Copper

Location

Township or Area: Cook

Latitude: 48° 26' 21.03" Longitude: -80° 9' 10.46"

UTM Zone: 17 Easting: 562651 Northing: 5365461 UTM Datum: NAD83

Resident Geologist District: Kirkland Lake

NTS Grid: 42A08NE

Point Location Description: DDH PR8303

Location Method: Data Compilation

Access Description: A point 0.45 km south and 0.30 km west of the northeast corner of Cook Township.

Exploration History

1972: Noranda Exploration Inc. completed a geological survey. 1983-86: St. Joe Canada Inc.- RCD-19-1136.7 m; VLF and ground magnetic surveys.

Assessment Work on File

Assessment Work on File
Office File Number	Online Assessment File Identifier	Online Assessment File Directory
63.4415	42A08NE0012	42A08NE0012
KL-2437/ 63.4243/ OM82-6-C206	42A08NE8940	42A08NE8940
18, KL-2437	42A08NE0262	42A08NE0262

Geology

Province: Superior

Subprovince: Abitibi

Terrane: Wawa-Abitibi

Belt: Abitibi

Tectonic Assemblage: Blake River

Geological Age: Archean

Metamorphism Grade: Greenschist

Geology Comments

Apr 22, 2016 (C Salo) - Geological mapping indicates that the area is underlain mainly by sparsely exposed weakly metamorphosed (greenschist or lower metamorphic facies) tholeiitic volcanic rocks of the (Archean) Kinojevis Group which strike east, dip steeply, and face south. The occurrence is several hundred metres south of the interpreted location of the Porcupine- Destor Fault Zone.

Lithology

Lithology Data
Rock Type	Rank	Composition	Texture	Relationship
Intermediate Lapilli-Tuff	1	Lapilli Tuff	Pink Carbonate Alteration, Pyroclastic	Host
Diabase	2	Diabase		Intrudes
Syenite	3			Intrudes

Lithology Comments

Apr 22, 2016 (A Wilson) - The main unit, andesite pyroclastics, is a distinctive lapilli tuff characterized by white euhedral to anhedral feldspar grains with subordinate lithic fragments of andesite pumice and very rare exotic fragments of cherty sulphides. A diabase dike and a syenite dike cut the stratigraphy but gold mineralization is not associated with them.

Mineralization

Mineralization and Alteration
Rank	Mineral Name	Class	Economic Mineral Type	Alteration Mineral Type	Alteration Ranking	Alteration Intensity	Alteration Style
1	Quartz	Economic	Gangue
2	Pyrite	Economic	Gangue
3	Carbonate	Economic	Gangue
4	Hematite	Economic	Gangue
	Carbonate	Alteration		Carbonatization	1	Unknown	Disseminated

Mineralization Comments

Apr 22, 2016 (A Wilson) - The absolute value of gold obtained in all overburden samples is very much higher than expected with a mean for 752 samples of 471 ppb as compared to approximately 10 ppb for the Timmins area. The discovery of felsic tuffs and hematite quartz-carbonate alteration in PR83-03 indicates the geological environment is similar to that at the Ross Mine. Anomalous gold assays of 1090 ppb (0.032 oz/ton) Au from 124-125m, 580ppb Au from 132-133m, 305ppb Au from 155-156m and 447ppb Au from 177.6 to 180m,

Dec 07, 2005 (C Salo) - Diamond drilling by St. Joe Canada yielded brecciated pink carbonate containing 20% of pyrite which averaged as much as 1,090 ppb of gold over a 1 metre sampling length.

Mineral Record Details

Characteristics
Rank	Characteristic
1	Disseminated

References

File - Resident Geologist file KL-2019

Publication Number: Date:

Author:

Publisher Name:

Location: Kirkland Lake RGP office

Folio - Cook Township, District of Cochrane

Publication Number: GDIF356 Date: 1997

Author: Kirkland Lake RGO