Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42A04NW00005

Record: MDI42A04NW00005

General

Mineral Record Identification
Record Name(s) Crawford River - 1959, Hoodoo West - 1951
Related Record Type Simple
Related Record(s)
Record Status Discretionary Occurrence
Date Created 1993-Jun-24
Date Last Modified 2022-May-11
Created By
Revised By

Commodities

Primary Commodities: Asbestos



Location

Township or Area: Kenogaming

Latitude: 48° 8' 43.03"    Longitude: -81° 57' 11.94"

UTM Zone: 17    Easting: 429087.07   Northing: 5332887.81    UTM Datum: NAD83

Resident Geologist District: Timmins

NTS Grid: 42A04NW

Point Location Description: Small pop hole in outcrop adjacent to a wet swamp which mantles the Crawford River.

Location Method: Data Compilation

Access Description: The Kenogaming Main Haul road provides easy access to the central part of the area from Highway 101. The old secondary logging roads and grid lines have grown in.



Exploration History

1951 Canadian Johns Manville started an asbestos exploration program in the area. This prompted Nick Elieff who worked for Dunvegan Mines to search for asbestos and resulted in the discovery of a collection of showings at Crawford River. In the following year one short hole was drilled to test the mineralization but no asbestos was intersected. 1956 Johns Manville staked the ground then carried out a magnetometer survey and geologically mapped the property. During this work the occurrence of asbestos mineralization was confirmed. 1965 Canadian Johns Manville carried out a ground magnetic and horizontal loop EM survey over the property. Based on this work together with other geological information a geological map for the area was generated. 1973 Hanna Mining carried out a reconnaissance nickel exploration program which covered the area. Samples containing asbestos were analysed for nickel but with disappointing results as most of the nickel is tied up in the silicate phase. 1983 The HWS Syndicate (R.J. Sheppard) recompiled the regional geology after flying a detailed airborne magnetic and EM survey. This work was part of a grass roots gold exploration program. 1984 Golden Range Resources carried out a large diversified exploration program in the search for gold. The ultramafics hosting the asbestos mineralization together with the other rocks in the area were mapped in detail, brief mention is made of the asbestos mineralization as an alteration of the ultramafics. 1990 A ground magnetic together with horizontal loop EM survey was carried out over the asbestos showings by Falconbridge as part of a nickel exploration program.


Assessment Work on File

Assessment Work on File
Office File Number Online Assessment File Identifier Online Assessment File Directory
T-527 / 63.325 42A04NW0170 42A04NW0170
T-648 / 63.858 42A04NW0173 42A04NW0173
T-2751 / 2.8587 20000004926 20000004926
T-527 / donation 42A04NW0158 42A04NW0158
T-648 / 63.1808 42A04NW0163 42A04NW0163
T-2751 / donation 42A04NW0139 42A04NW0139
T-3398 / 2.13542 42A04NW1109 42A04NW1109
T-527 / donation 42A04NW0155 42A04NW0155

Geology

Province: Superior

Subprovince: Abitibi

Terrane: Wawa-Abitibi

Belt: Swayze

Geological Age: Neoarchean  

Metamorphism Type: Regional

Metamorphism Grade: Greenschist



Geology Comments

Dec 07, 2005 (S Fumerton) - At the river there is a general trend of 110 to the alteration veins which dip steeply to the south. This trend has been folded into open folds.




Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
Serpentinite 1 Serpentinite Host
Diabase 2 Diabase Dyke Near
Mylonite/Fault Gouge/Pseudotachylite 3 Shear Zone Adjacent

Lithology Comments

Sep 21, 2017 (S Fumerton) - The mineralization is hosted in a large ultramafic body which has been interpreted as both a flow and a sill. This unit is generally strongly serpentinized and locally contains talc/carbonate and more rarely asbestos veins parallel to joints. At the river there are abundant veins filled with fine grained serpentinite or talc / carbonate that are up to 2cm thick. Between these veins there are elliptical cores of less altered material. In addition to these large veins there is a mesh of fine discontinuous veins measuring less than 1x30mm which are formed of medium grained talc and carbonate. Adjacent to the diabase dyke there is a contact metamorphic aureole which affects the serpentinized ultramafic and the alteration veins. At the eastern occurrences cumulate textured subhedral, pseudomorphic olivine up to 2cm across occurs. This unit is locally banded with coarse and fine grained olivine phases. The cumulate grains have been cut by a mesh of serpentinized or steatitized joints leaving elliptical cores of less altered crystals / material.




Mineralization

Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Alteration Style
1ChrysotileEconomicOre
SerpentineAlterationSerpentinization1StrongReplacement

Mineralization Comments

Sep 21, 2017 (S Fumerton) - Asbestos occurs in small braided veins associated with some of the thicker serpentinite veins. The braided veins occur over a width of several centimetres but the individual asbestos veins are up to 4mm thick. The chrysotile asbestos is a pale green colour, flexible, and can easily be frayed by hand. At the eastern occurrences rare veinlets of asbestos occur in patches where they can form up to 1% of the rock. The veinlets are up to 2x50mm in size and are orientated 300.


Sep 21, 2017 (A Wilson) - No individual fibre longer than 3/16 inch was observed. Fibre exposed to date is in areas of small lateral extent, too small to be considered as orebodies.



Mineral Record Details

Classification
RankClassification            
5 Replacement
Characteristics
Rank Characteristic            
5 Stockwork

Mineral Zones - Size and Shape

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

Site Visit Information

Date: Oct 10, 1951

Geologist: S Fumerton

Notes: Chrysotile fibre has been located in the serpentine rocks in several places on the Dunvegan Property. Two of these were examined by the writer. A third, located west of the Crawford river and reported to be of similar nature was not examined. A limited amount of work has been done on an exposure of fibre on an outcrop on the Crawford River about half a mile from the east end of Crawford Lake. A second occurrence is about half a mile to the east of this point. In both cases, a few shallow holes have been blasted to expose the fresh fibre. The fibre is a pale amber colour and of a good quality. However, it occurs over narrow widths, and the fibres are short. In some cases veinlets up to a half inch were observed, but in these veinlets, the fibre is jointed [ PRECIS ]



References

Map - Kenogaming Township, District of Sudbury

Publication Number: P0465 Scale: 1:15,840    Date: 1997

Author: Milne V.G.

Publisher Name: Ontario Dept. 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:


MonoMap - Geology of the Kukatush-Sewell Lake area, District of Sudbury

Publication Number: R097 Page: 82-83  Date: 1972

Author: Milne V.G.

Publisher Name: Ontario Division of Mines

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:


Book - Kenogaming Township - unpublished GDIF

Publication Number: GDIF Date: 1991

Author: Resident Geologist staff

Publisher Name:

Location: Timmins RGP


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


Mono - Industrial minerals of northern Ontario

Publication Number: MDC026 Page: 66, 91-92  Date: 1985

Author: Vos M.A., Abolins T., McKnight R.L.W., Smith V.

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: 502-503  Date: 1995

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

Publisher Name: Ontario Geological Survey

Location:


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