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Ontario Geological Survey
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MDI42B01NW00013
| Record Name(s) | Slate Rock Lake - 1991, Slate Rock Lake Iron - 1950, Iron Keith - 1984 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Discretionary Occurrence |
| Date Created | 1993-Jun-03 |
| Date Last Modified | 2022-Sep-27 |
| Created By | |
| Revised By |
Primary Commodities: Iron
Township or Area: Keith
Latitude: 48° 10' 29.45" Longitude: -82° 21' 36.33"
UTM Zone: 17 Easting: 398887.55 Northing: 5336628.48 UTM Datum: NAD83
Resident Geologist District: Timmins
NTS Grid: 42B01NW
Point Location Description: Centre of diabase dyke exposure in cleared area just north of old logging road
Location Method: Field Visit with GPS
Access Description: Access is via the turn off from Highway 101 onto the Dore or Foleyet Lumber Road, 100 km west of Timmins and 10 km east of Foleyet. From the highway follow road south approximately 7 km. Showing is aproximately 900 m east of main haul road.
1950 First reported by V.K. Prest in Ontario Department of Mines annual report 59, Vol 49, part 7, Geology of Keith-Muskego Townships Area as a small of iron formation south of Slate Rock Lake. 1964-66 The Keevil Mining Group Ltd. held 32 contiguous claims in the west corner of Muskego and Keith Townships and the southeastern corner of Foleyet Township. Keevil Mining conducted a magnetic and electromagnetic survey over the property as well as a geologic mapping program. Keevil Mining Group Ltd. subsequently drilled two holes into two separate conductors outlined in their previous geophysical survey. 1971 Noranda Exploration conducted an electromagnetic and magnetic survey over an area which included the occurrence. The survey revealed several conductors of varying strength. 1982 Geosearch consultants Ltd. conducted an electromagnetic and magnetic survey over the claim group for Dome Exploration. 1983 Dome exploration conducted a follow up drill program in the area of the southern Muskego boundary and the northern portion of Keith Township. One hole, 182-1, is believed to have been drilled in the vicinity of the iron formation but the log has not been filed for assessment. 1987 Aerodat Limited flew a combined helecopter airborne electromagnetic and magnetic survey for B.P. Resources over the area that includes Muskego and Slate Rock Lakes. 1991 Falconbridge Exploration conducts a ground electromagnetic and magnetic survey in an area to the west of Slate Rock Lake in northern Keith Township.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| T-402 / 2.657 | 42B01NE0055 | 42B01NE0055 |
| T-1119 / | 42B01NW8541 | 42B01NW8541 |
| T-1119 / 65.1527 | 42B01NW0025 | 42B01NW0025 |
| T-2465 / 2.4421 | 42B01NE0016 | 42B01NE0016 |
| T-2717 / 2.10285 | 42B01NW0007 | 42B01NW0007 |
| T-3446 / 2.14069 | 42B01NW0034 | 42B01NW0034 |
Province: Superior
Subprovince: Abitibi
Terrane: Wawa-Abitibi
Belt: Swayze
Tectonic Assemblage: Muskego-Reeves
Geological Age: Neoarchean
Metamorphism Type: Regional
Metamorphism Grade: Greenschist
| Rock Type | Rank | Composition | Texture | Relationship | Ironstone-unsubdivided | 1 | Banded Iron Formation | Host |
|---|---|---|---|---|
| Diabase | 2 | Diabase | Near | |
| Mafic lava flow-unsubdivided | 3 | Near | ||
| Intermediate lava flow-unsubdivided | 4 | Near |
Dec 07, 2005 (K Houle) - No description of the occurrence has been documented save for its location on ODM map 1950-4. Descriptions of other iron formations in the area can be found in AR59, VOL 59, Part 7, 1950.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 5 | Magnetite | Economic | Ore |
| Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
|---|---|---|---|---|---|---|---|---|---|
| Unknown | N/A | N/A |
Date: Jun 08, 1993
Geologist: K Houle
Notes: Small exposure of iron formation is on the east side of diabase dyke. Very lean magnetite cherty iron formation. Weakly banded chert and partially silicified epiclastic sediments with < 10% finely disseminated magnetite. Only traces of sulphides were observed. Iron formation is well folded into open S-folds proximal to diabase. This unit is believed to be, or on strike with, what was originally referred to as the Slate Lake Iron Occurrence. A drill hole, Dome 182-1 (1983), was located about 300m to the northwest, UTM 17 398760 5336594. Although no drill log is available, from the south direction of drilling, it is believed that the drill target may have been a geophysical anomaly associated with this iron formation.
Map - Parts of Keith and Muskego townships, District of Sudbury, Ontario
Publication Number: M1950-04 Date: 1997
Author: Prest V.K., Hogg N.
Publisher Name: Ontario Dept. of Mines
Location:
Part - Geology of the Keith-Muskego townships area
Publication Number: ARV59-07 Page: 11-12 Date: 1997
Author: Prest V.K.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Patricia Showing-Hoodoo Prospect, Minor Element Data
Publication Number: OFM0215 Scale: 1:250 Date: 1993
Author: Siragusa G.M.
Publisher Name: Ontario Geological Survey
Location:
Mono - Iron deposits of Ontario
Publication Number: MDC011 Page: 345 Date: 1968
Author: Shklanka R.
Publisher Name: Ontario Dept. 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
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: 642-643 Date: 1995
Author: Fumerton S.L., Houle K.A.
Publisher Name: Ontario Geological Survey
Location:
Map - Geophysical/geochemical series, north Swayze-Montcalm area, airborne electromagnetic survey, total intensity magnetic survey
Publication Number: M81376 Scale: 1:20,000 Date: 1990
Author: Geoterrex Ltd.
Publisher Name: Ontario Geological Survey
Location:
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