Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI41N15NW00024

Record: MDI41N15NW00024

General

Mineral Record Identification
Record Name(s) Dodds Lake - Nezwa Lake Prospect - 1937, Algoma Steel Anomaly 1 - 1981, Pinnacle Prospect - 1937
Related Record Type Simple
Related Record(s)
Record Status Discretionary Occurrence
Date Created 1991-Jan-08
Date Last Modified 2023-Mar-29
Created By
Revised By

Commodities

Primary Commodities: Molybdenum

Secondary Commodities: Sulphur/Pyrite



Location

Township or Area: Rabazo

Latitude: 47° 53' 42.35"    Longitude: -84° 48' 15"

UTM Zone: 16    Easting: 664127.03   Northing: 5306974.67    UTM Datum: NAD83

Resident Geologist District: Sault Ste. Marie

NTS Grid: 41N15NW

Point Location Description: Quartz vein on northwest arm of Dodds Lake

Location Method: Based on Assessment

Access Description: Access to the area is via a well marked, but steep canoe route from Highway 17 at Crozier Lake, through Hilltop, Nezwa and Dodds Lakes.



Exploration History

1937-45: R. Ranson and associates - trenching. 1945: Arvid, John and Hult - 614 feet (3 ddh) diamond drilling. 1961-64: C. and E. Nyman - staking. 1981-82: Algoma Steel Corporation - ground geophysical surveys, mapping. 1984-85: Golden Pond Resources Ltd. - ground geophysical survey, prospecting, mapping. 1989: R. Mori - airborne geophysics.


Assessment Work on File

Assessment Work on File
Office File Number Online Assessment File Identifier Online Assessment File Directory
WP RABAZO.15 41N15NW0076 41N15NW0076
Rabazo-0039-A1 41N15NW0101 41N15NW0101
WP_Rabazo-22 20000018531 20000018531
Rabazo-0032 41N15NW0111 41N15NW0111

Geology

Province: Superior

Subprovince: Wawa

Terrane: Wawa-Abitibi

Belt: Michipicoten

Tectonic Assemblage: Catfish

Geological Age: Neoarchean   Geochronological Age: 2.7 MA   Geochron. Age Ref.: GOO VOL 1

Metamorphism Type: Regional

Metamorphism Grade: Greenschist



Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
Intermediate pillowed flow 1 Intermediate To Mafic Pillowed And Massive Near
Vein 2 Quartz Host

Lithology Comments

Dec 07, 2005 (A Wilson) - The metavolcanics consist of a sequence of mafic flows ranging from pillowed to massive gabbroic flows. Flow top agglomerates have been observed. The veins consist of sugary quartz with localized sulphide mineralization. The main vein stikes 120 and cross cuts the stratigraphy. Several other parallel quartz veins occur on the NW shore of Dodds Lake. Cross cutting veins are at a higher angle to the stratigraphy and consist of en-echelon veins. The largest veins have sheared walls.




Mineralization

Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Alteration Style
1ChalcopyriteEconomicOre
2MolybdeniteEconomicOre
1PyriteEconomicGangue
2GalenaEconomicGangue
3SphaleriteEconomicGangue

Mineralization Comments

Dec 07, 2005 (A Wilson) - The best assay collected by Algoma Steel in 1981 returned 0.37% Mo and low silver values. Gold values are nil.



Mineral Record Details

Mineral Zones - Size and Shape

Rank: 2       Structure Type: Shear

Rank: 1       Structure Type: Vein

Zone Name: Detour Lake - Rank 1
Shape Length Thickness Depth Strike Dip Plunge Trend Age Reference
Unknown 3 120

References

Map - Geological series, Precambrian geology, Rabazo Township, Algoma District

Publication Number: P2682 Scale: 1:15,840    Date: 1983

Author: Massey N.W.D., Navratil S.

Publisher Name: Ontario Geological Survey

Location:


Mono - Geology of the Mishewawa Lake area, District of Algoma

Publication Number: OFR5532 Page: 95-96  Date: 1985

Author: Massey N.W.D.

Publisher Name: Ontario Geological Survey

Location:


Mono - Wawa mineral deposits data base

Publication Number: OFR5775 Page: 315  Date: 1991

Author: Frey E.D., Stewart R.C.

Publisher Name: Ontario Geological Survey

Location:


Folio - Rabazo Township, District of Algoma

Publication Number: GDIF074 Date: 1997

Author: Sault Ste Marie RGO

Publisher Name: Ontario Geological Survey

Location:


Report an Error

We are continuously updating our assessment file / technical report information. If you notice errors in the data, please contact us.


Terms of Use

Please review our Terms of Use agreement for this data product.


Ministry Contact Information

For detailed information regarding this mineral record please contact the Sault Ste. Marie Resident Geologist District Office