Ontario Geological Survey
Permanent Link to this Record:
MDI42F12SE00006
| Record Name(s) | Taradale (North) Copper-Silver Occurrence - 1994, Norlac Explorations Ltd. Copper-Silver Property - 1971 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1997-Jan-03 |
| Date Last Modified | 2022-May-09 |
| Created By | |
| Revised By |
Primary Commodities: Copper
Secondary Commodities: Silver
Township or Area: Mann Lake Area
Latitude: 49° 33' 53.51" Longitude: -85° 44' 18.11"
UTM Zone: 16 Easting: 591230.01 Northing: 5491016.54 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 42F12SE
Point Location Description: Railway cut
Location Method: Data Compilation
Access Description: The Taradale (North) copper-silver occurrence is located in the Upper Taradale Lake area approximately 49.5 km north-northeast of Manitouwadge and 5.45 km east-northeast of Stevens, a CNR railway stop. The occurrence is situated in the bottom of a railway cut approximately 765 m west of mileage marker 55 on the Capreol-Nakina branch of the mainline of the Canadian National Railway. The occurrence is accessible via motor vehicle followed by travel on foot. From Manitouwadge, travel west and then north along the Caramat Industrial Road for approximately 51.4 km to the intersection with the Stilwell Lake logging road. Proceed northeast along the Stilwell Lake logging road for approximately 9.5 km to the intersection with the Capreol-Nakina branch of the Canadian National Railway. Proceed northwest along the CNR mainline for approximately 2.1 km to mileage marker 55. Continue travelling northwest along the mainline for approximately 765 m to where the tracks make a sharp bend to the west. Copper mineralization is exposed on the south side of the tracks in the bottom of a railway cut.
1965: Geological mapping; M.E. Coates (OGS). 1971: Lithogeochemical sampling; Norlac Explorations Limited. 1972: Line cutting and ground geophysical surveys (MAG, VLF-EM, and HLEM); Norlac Explorations Limited. Several conductors, attributed to shearing rather than to mineralization, were identified by these surveys.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 63.2904 | 42F12SW0001 | 42F12SW0001 |
| 2.847 | 42F12SW0002 | 42F12SW0002 |
Province: Superior
Subprovince: Quetico
Geological Age: Archean
Apr 11, 2014 (D McKay) - The occurrence is located within the Quetico Subprovince and is underlain primarily by moderately foliated (085 degrees /subvertical), metasedimentary migmatites, quartz monzonite, and diabase (Coates 1968, Map 2141; Bayne 1971).
| Rock Type | Rank | Composition | Texture | Relationship | Diabase | 1 | Diabase Dike | Host |
|---|---|---|---|---|
| Quartz Monzonite | 2 | Host |
Apr 11, 2014 (G White) - The occurrence is located within the Quetico subprovince and is underlain primarily by moderately foliated, metasedimentary migmatites and biotite granites (Coates 1968). The foliation of the rocks generally strikes east-west and is subvertical. The occurrence is spatially associated with a NW-trending, linear topographic feature referred to as sthe Taradale lineament (Bayne 1971). In the vicinity of the occurrence, a diabase dike has intruded along this lineament. The occurrence is situated proximal to the contact between this dike and the biotite granite migmatite located to the southwest. Copper-silver- bearing, quartz-carbonate veins have intruded the diabase, the diabase-granite contact, and the granite. The occurrence is located in a railway cut approx. 800 m northwest along strike (Taradale lineament) of the Taradale South occurrence.
Apr 11, 2014 (D McKay) - The occurrence is located within the Quetico Subprovince and is underlain primarily by moderately foliated (085 degrees /subvertical), metasedimentary migmatites, quartz monzonite, and diabase (Coates 1968, Map 2141; Bayne 1971). The occurrence is spatially associated with a northwest-trending, linear topographic feature referred to as the Taradale lineament (Bayne 1971). In the vicinity of the occurrence, a diabase dike has intruded along this lineament. Copper- and silver-bearing, quartz-carbonate veins have intruded the diabase proximal to the dike margin. Similar mineralization has occurred at the Taradale (South) copper-silver occurrence located approximately 1 km to the southeast.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Chalcopyrite | Economic | Ore | ||||
| 2 | Pyrite | Economic | Ore | ||||
| 3 | Pyrrhotite | Economic | Ore | ||||
| 1 | Quartz | Economic | Gangue | ||||
| 2 | Calcite | Economic | Gangue |
Dec 07, 2005 (D McKay) - Bayne (1971b, p.4) described the mineralization as follows: In the south side of a railway cut, about 700 feet southeast of the northwest corner of this claim, an exposure of a silicified, carbonatized shear in a dioritic rock contained fracture fillings and blebs of pyrite and chalcopyrite. It was not possible to open up this showing by blasting so close to the track, but the undersigned cut two 5-pound character samples from a 2-foot wide exposure. Respective assays were 0.46% copper, 0.29 ounce silver per ton and 2.55% copper and 1.85 ounce silver per ton. Other copper occurrences, spatially related to northwesterly-trending lineaments intruded by diabase, occur widely distributed throughout the Quetico Subprovince north of Manitouwadge (Coates 1968, 1970). To date, the economic potential of these occurrences has been limited by their narrow widths and the erratic distribution and low grades of the mineralized zones.
Dec 07, 2005 (D McKay) - Post-diabase faulting along the margins of dikes with a northwest-southeast trend caused some brecciation of the dikes and the adjoining country rocks. These openings have subsequently become filled with quartz, carbonate, and some chalcopyrite.
| Rank | Classification |
|---|---|
| 1 | Hydrothermal |
| 2 | Igneous Contact |
| Rank | Characteristic |
|---|---|
| 2 | Breccia |
| 1 | Disseminated |
Map - Stevens sheet, Thunder Bay District
Publication Number: M2141 Scale: 1:63,360 Date: 1967
Author: Coates M.E.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Mineral Occurrences in the Manitouwadge Area, Volumes 1, 2 and 3
Publication Number: OFR5906 Page: 508-512 Date: 1994
Author: McKay D.B.
Publisher Name: Ontario Geological Survey
Location:
File - Beardmore-Geraldton Resident Geologist Mineral Deposit Files
Publication Number: Min Dep Date:
Author:
Publisher Name:
Location: Thunder Bay RGP
MonoMap - Geology of Stevens-Kagiano Lake area, District of Thunder Bay
Publication Number: R068 Date: 1968
Author: Coates M.E.
Publisher Name: Ontario Dept. of Mines
Location:
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