Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI000000001800

Record: MDI000000001800

General

Mineral Record Identification
Record Name(s) Chrome Puddy - 2023, Commerce Northwest - 1967, Commerce Far West - 2024
Related Record Type
Related Record(s)
Record Status Occurrence
Date Created 2014-Dec-02
Date Last Modified 2024-Oct-24
Created By
Revised By

Commodities

Primary Commodities: Nickel, Copper

Secondary Commodities: Cobalt, Chromium, Iron



Location

Township or Area: Puddy Lake Area

Latitude: 49° 57' 54.97"    Longitude: -89° 33' 16.15"

UTM Zone: 16    Easting: 316806   Northing: 5537897    UTM Datum: NAD83

Resident Geologist District: Thunder Bay South

NTS Grid: 52H13NE

Point Location Description: sample location

Location Method: Field Visit with GPS

Access Description: This occurrence is most readily accessed by air (either helicopter or float plane). At the time of a 2012 site visit, a large cleared area at the site afforded easy helicopter access.



Exploration History

1964-67: Trenching, geological mapping, geochemical and geophysical surveys,and diamond drilling (24 ddh for 5590 feet) by Commerce Nickel Mines. 1967-68: Trenching, electromagnetic suveys and diamond drilling (10 ddh for 3106 feet) by Newmont Mining Corp. of Canada. 1987-88: Geological mapping, sampling and ground geophysical surveys by Imperial Platinum Corp. 2007: Ground magnetic and electromagnetic surveys by Vale Inco Ltd. 2014: The property is being explored by Pavey Ark Minerals Inc. 2023: Green Bridge Metals (formerly Mich Resources) optioned the property and carried out sampling. 2024: Green Bridge Metals carried out channel sampling.


Assessment Work on File

Assessment Work on File
Office File Number Online Assessment File Identifier Online Assessment File Directory
63.2144 52H13NE0011 52H13NE0011
11 52H13NE0016 52H13NE0016
63.1782 52H13NE0012 52H13NE0012
2.10948 52H14NW0001 52H14NW0001
2.39091 20000003238 20000003238



Geology Comments

Dec 02, 2014 (Mark Puumala) - The following geological description is excerpted from OFR 6285: The outcrop surface at this location has a distinctive red colouration caused by secondary iron oxides associated with the weathering of the serpentinized ultramafic rocks. The weathered surface material has largely broken down into angular pebble to cobble-sized blocks. The less weathered surface-exposed material is generally light grey or green and contains millimetre- to centimetre-scale seams and patches of magnetite. Fresh surfaces of the serpentinized material are light green in colour. A grab sample collected from one of the historic exploration trenches at UTM Zone 16, 316806E, 5537897N assayed 1881 ppm Ni. However, no significant precious metal assay values (i.e., Au, Pt or Pd) were obtained from this sample (Resident Geologist’s Files, Thunder Bay South District, Thunder Bay).




Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
Serpentinite 1 Is

Mineralization

Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Alteration Style
1SerpentineEconomicOre
1BruciteEconomicGangue

Mineralization Comments

Dec 02, 2014 (Mark Puumala) - Commerce Nickel Mines Ltd. drilled a magnetic anomaly near this location in 1965. Assay results reported by Nelson (1969; Iridium ant Puddy Lake, Canada, Mineral Deposit Files, Thunder Bay South District, 52H13NW Puddy Lake Prospect) for Commerce Nickel Mines ddh No. 8 included values of up to 1.12% Cu and 0.36% Ni over 10 feet.


May 17, 2024 (Therese Pettigrew) - The ultramafic intrusion that hosts nickel mineralization is highly serpentinized where hydrothermal alteration has transformed anhydrous silicate minerals such as olivine into hydrous and hydroxide minerals such as serpentine and brucite. This process has released nickel and iron oxide minerals that occur in both veins and as disseminated mineralization. From a total of 109 grab samples collected in the autumn 2023 prospecting campaign, 52 grab samples were from serpentinized ultramafic rocks. In addition to the elevated Ni contents ranging from 0.10% to 0.38% Ni with an average of 0.20% Ni, the ultramafic samples contained an average of 11.7% Fe, 0.015% Co and 0.25% Cr. Higher Ni values are generally correlated with higher Fe content. Chrome Puddy serpentinite samples are generally low S with less than 0.1% S. Low S samples typically also have low Cu, Pt, Pd and Au. Sample A1021861 returned 0.321% Ni, 8.76% Fe, 0.048% Co, and 0.18% Cr from a serpentinite. Sample B903122 returned 0.382% Ni, 6.43% Fe, 0.06% Co, and 0.26% Cr from a serpentinite (Green Bridge Metals news release May 15, 2024). A 16.0 m channel sample returned an average of 2018 ppm Ni, 7.39% Fe, 139.3 ppm Co, and 2558 ppm Cr (Green Bridge Metals news release Oct 23, 2024).



Mineral Record Details

Classification
RankClassification            
1 Mafic-Ultramafic Intrusion

Site Visit Information

Date: Dec 02, 2014

Geologist: Mark Puumala

Notes: The geological description provided elsewhere in this record is based on this site visit.



References

Mono - Report of Activities 2012, Resident Geologist Program, Thunder Bay South Regional Resident Geologist Report: Thunder Bay South District

Publication Number: OFR6285 Date: 2013

Author: Puumala M.A., Campbell D.A., Cundari R.M., Zurevinski S.E., Tuomi R.D., Lockwood H.C., Debicki R.L., Moses P., Brunelle M.R., Pelaia R.

Publisher Name: Ontario Geological Survey

Location:


Mono - Chromite deposits in Ontario

Publication Number: S055 Date: 1986

Author: Whittaker P.J.

Publisher Name: Ontario Geological Survey

Location:


Map - Obonga Lake area, west part, District of Thunder Bay

Publication Number: P0416 Scale: 1:15,840    Date: 1997

Author: Kustra C.R.

Publisher Name: Ontario Dept. of Mines

Location:


Map - Precambrian Geology of the Northwest Portion of the Nipigon Embayment, Northwestern Ontario

Publication Number: P3579 Scale: 1:100,000    Date: 2006

Author: Hart T.R.

Publisher Name: Ontario Geological Survey

Location:


Mono - Garden-Obonga Lake Area High Density Lake Sediment and Water Geochemical Survey, Northwestern Ontario

Publication Number: OFR6009 Date: 2000

Author: Jackson J.E., Dyer R.D.

Publisher Name: Ontario Geological Survey

Location:


Data - Ontario Airborne Geophysical Surveys, Magnetic and Electromagnetic Data, Garden-Obonga Area

Publication Number: GDS1105 Date: 2000

Author: Ontario Geological Survey

Publisher Name: Ontario Geological Survey

Location:


Mono - Soapstone in Ontario

Publication Number: OFR5764 Date: 1991

Author: Gerow M.C., Sherlock E.J., Bellinger J.A.

Publisher Name: Ontario Geological Survey

Location:


Part - Obonga Lake chromite area, District of Thunder Bay

Publication Number: ARV39-02.003 Page: 51-60  Date: 1998

Author: Graham A.R.

Publisher Name: Ontario Dept. of Mines

Location:


Part - Chromite deposits of the Obonga Lake area, District of Thunder Bay

Publication Number: ARV40-04.004 Page: 111-119  Date: 1998

Author: Hurst M.E.

Publisher Name: Ontario Dept. of Mines

Location:


Publication - Obonga-Kashishibog area, Thunder Bay District, Ontario; Summary Report 1933, Part D; Geological Survey of Canada, Separate Report 2351

Publication Number: GSC SR 2351 Date: 1933

Author: Kidd, D F

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/102114


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For detailed information regarding this mineral record please contact the Thunder Bay South Resident Geologist District Office