Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI52N04SW00042

Record: MDI52N04SW00042

General

Mineral Record Identification
Record Name(s) Lassie Red Lake Occurrence - 1945
Related Record Type Simple
Related Record(s)
Record Status Occurrence
Date Created 1979-Jun-06
Date Last Modified 2022-Sep-01
Created By
Revised By

Commodities

Primary Commodities: Gold



Location

Township or Area: Balmer

Latitude: 51° 3' 11.82"    Longitude: -93° 45' 20.38"

UTM Zone: 15    Easting: 447036.622   Northing: 5656021.972    UTM Datum: NAD83

Resident Geologist District: Red Lake

NTS Grid: 52N04SW

Point Location Description: DDH 11 at NE corner claim KRL 20843 on map P.1976

Location Method: Conversion from MDI



Exploration History

Pre 1945: Original prospectors of property performed trenching. 1946: Dome Explorations drilled 39 holes were drilled for a total of 6928 m. 1981: Carried out a drill program consisting of 9 holes totalling 1846.75 m.


Geology

Province: Superior

Subprovince: Uchi

Terrane: North Caribou

Domain: Uchi

Belt: Red Lake

Geological Age: Archean  

Metamorphism Type: Regional

Metamorphism Grade: Greenschist



Geology Comments

Dec 07, 2005 (K R Kettles) - The property is principally underlain by altered mafic metavolcanic flows. The units strike at approximately 100 degs and dip steeply south. On the basis of pillow packing, stratigraphic tops are to the south. The mafic flows have locally been highly sheared, and foliation is parallel to stratigraphy. Thin iron formation units are intercalated within the mafic flows. Thin, discontinuous quartz porphyry dikes have been observed on the property.




Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
Mafic lava flow-unsubdivided 1 Altered Flows Adjacent
Vein 2 Quartz-Carbonate Stringers Host
Mylonite/Fault Gouge/Pseudotachylite 3 Carbonatized Shear Zone Contains

Mineralization

Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Alteration Style
1GoldEconomicOre
1QuartzEconomicGangue
2CarbonateEconomicGangue
CarbonateAlterationCarbonatization1
SilicaAlterationSilicification2

Mineralization Comments

Dec 07, 2005 (K R Kettles) - A zone of sheared and altered mafic metavolcanics has been traced for a distance of about 460.0 m. The zone strikes E-W. Thin carbonate and quartz-carbonate stringers are common in the zone. Scattered, erratic gold values have been obtained from the sheared mafic metavolcanics in the zone. Narrow sections of drill core from three drill holes returned the following high assays: 3.86 opt Au/0.27 m, 0.42 opt/0.92, 0.18 opt/3.05 m (sludge sample).



Alteration Comments

Dec 07, 2005 (K R Kettles) - The mafic metavolcanics have been silicified and carbonatized.




Mineral Record Details

References

Map - Geological series, Balmer Township, District of Kenora (Patricia Portion)

Publication Number: P1976A Scale: 1:12,000    Date: 1978

Author: Pirie J., Grant A.

Publisher Name: Ontario Geological Survey

Location:


Part - Geology of Balmer Township

Publication Number: ARV60-10 Page: 48-49  Date: 1997

Author: Chisholm E.O.

Publisher Name: Ontario Dept. of Mines

Location:


MonoMap - Geology of Dome Township, District of Kenora

Publication Number: R045 Page: 71  Date: 1997

Author: Ferguson S.A.

Publisher Name: Ontario Dept. of Mines

Location:


Mono - Gold deposits of Ontario, part 1, districts of Algoma, Cochrane, Kenora, Rainy River, and Thunder Bay

Publication Number: MDC013 Page: 244  Date: 1971

Author: Ferguson S.A., Groen H.A., Haynes R.

Publisher Name: Ontario Dept. of Mines and Northern Affairs

Location:


Mono - Gold occurrences, prospects, and deposits of the Red Lake area, volumes 1 and 2

Publication Number: OFR5558 Page: 182-183  Date: 1987

Author: Durocher M.E., Burchell P.S., Andrews A.J.

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 Red Lake Resident Geologist District Office