Ontario Geological Survey
Permanent Link to this Record:
MDI42B01NE00016
| Record Name(s) | Jehann Fibre Zone - 1957 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Discretionary Occurrence |
| Date Created | 1992-Jun-20 |
| Date Last Modified | 2022-May-11 |
| Created By | |
| Revised By |
Primary Commodities: Asbestos
Township or Area: Penhorwood
Latitude: 48° 11' 10.85" Longitude: -82° 5' 48.63"
UTM Zone: 17 Easting: 418476.08 Northing: 5337593.82 UTM Datum: NAD83
Resident Geologist District: Timmins
NTS Grid: 42B01NE
Point Location Description: Asb occurrence claim S6311 map 2231
Location Method: Field Visit with GPS
Access Description: The prospect is located 65km west-southwest of Timmins and easy access is possible via Highway 101 to the Reeves Mine turn-off. From the highway the road goes 4km south passing the old mill at the Reeves Mine and the new talc mill and open pit.
1951 Asbestos was discovered to the northeast by J.C. Bromley while prospecting in the vicinity of the Reeves Mine. 1951 The property was acquired by Johns Manville who started an exploration program in the following year. This exploration program continued for over twenty years consisted of geological mapping, magnetic, electromagnetic surveys and diamond drilling. Though this program was centred on the Reeves Mine outlying areas were also covered. This occurrence outcrops and was found by geological mapping and prospecting though insufficient work was done to specify dimensions or grade.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| T-506 / 63A.373 | 42B01NE0114 | 42B01NE0114 |
Province: Superior
Subprovince: Abitibi
Terrane: Wawa-Abitibi
Belt: Swayze
Tectonic Assemblage: Muskego-Reeves
Geological Age: Neoarchean
Metamorphism Type: Regional
Metamorphism Grade: Greenschist
Feb 29, 2016 (S Fumerton) - To the west of the occurrence there is a northeast trending shear zone with associated with extensive and intense alteration. At the eastern outcrop of the occurrence there are some fractures but no evidence of this northeastern striking shear.
| Rock Type | Rank | Composition | Texture | Relationship | Ultramafic lava flow-unsubdivided | 1 | Komatiite Serpentinite | Host |
|---|---|---|---|---|
| Serpentinite | 2 | Serpentinite | Host |
Dec 07, 2005 (S Fumerton) - The prospect is located in compositionally layered ultramafic rocks which may be part of an intrusive plug or a thickened sequence of komatiitic flows in the nose of a fold. Else where these flows or lenses are conformable with Mg tholeiitic and calc-alkaline flows. Originally these ultramafics were divided into early and late ultramafic intrusives by Milne 1972 but the occurrence of compositionally controlled spinifex texture was noted in settings now regarded as characteristic of layered komatiitic flows. The eastern outcrop for this occurrence is a highly altered ultramafic with a rusty to off white colour on both the weathered and fresh surfaces.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Asbestos | Economic | Ore | ||||
| 1 | Magnetite | Economic | Gangue |
Dec 07, 2005 (S Fumerton) - In outcrop there are a number of thin (<1cm) magnetite veins which have minor amounts of short asbestos fibre. Apparently this mineralization has been drill tested but with unknown results.
| Rank | Classification |
|---|---|
| 5 | Replacement |
| Rank | Characteristic |
|---|---|
| 5 | Stockwork |
| Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
|---|---|---|---|---|---|---|---|---|---|
| Irregular | N/A | N/A |
Date: Jun 28, 1992
Geologist: S Fumerton
Notes: A search was made for both outcrops mentioned by Milne (1972) and only the larger eastern one was found. To the west the ground is covered with a cedar swamp upon which a new grid has been cut in order to do exploration prior to expanding the Penhorwood Talc pit.
Map - Penhorwood Township, District of Sudbury
Publication Number: P0419 Scale: 1:15,840 Date: 1997
Author: Milne V.G.
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
Map - Foleyet sheet, districts of Sudbury, Cochrane and Algoma, geological compilation series
Publication Number: P0283 Scale: 1:126,720 Date: 1997
Author: Carlson H.D.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Geological series, Operation Chapleau, Horwood Lake sheet, districts of Algoma, Cochrane, and Sudbury
Publication Number: P0673 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:
MonoMap - Geology of the Kukatush-Sewell Lake area, District of Sudbury
Publication Number: R097 Page: 73 Date: 1972
Author: Milne V.G.
Publisher Name: Ontario Division of Mines
Location:
Map - Penhorwood and Kenogaming townships, Sudbury District
Publication Number: M2231 Scale: 1:31,680 Date: 1972
Author: Milne V.G.
Publisher Name: Ontario Dept. of Mines and Northern Affairs
Location:
File - Resident Geologist files 1980, air photos
Publication Number: Date: 1996
Author:
Publisher Name:
Location:
Map - Precambrian Geology, Northern Swayze Greenstone Belt
Publication Number: M2627 Scale: 1:50,000 Date: 1995
Author: Ayer J.A.
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: 548-549 Date: 1995
Author: Fumerton S.L., Houle K.A.
Publisher Name: Ontario Geological Survey
Location:
Book - Penhorwood Township - unpublished GDIF
Publication Number: GDIF Date: 1993
Author: Resident Geologist Staff
Publisher Name:
Location: Timmins RGP
MonoMap - Precambrian Geology, Northern Swayze Greenstone Belt
Publication Number: R297 Date: 1995
Author: Ayer J.A.
Publisher Name: Ontario Geological Survey
Location:
Mono - Industrial minerals of northern Ontario
Publication Number: MDC026 Page: 90 Date: 1985
Author: Vos M.A., Abolins T., McKnight R.L.W., Smith V.
Publisher Name: Ontario Geological Survey
Location:
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