Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI52N04SW00342

Record: MDI52N04SW00342

General

Mineral Record Identification
Record Name(s) Macvay Red Lake Gold Mines Ltd. - 1987, Mid - North Engineering Services - 1987
Related Record Type Simple
Related Record(s)
Record Status Occurrence
Date Created 1996-Dec-27
Date Last Modified 2022-May-06
Created By
Revised By

Commodities

Primary Commodities: Gold



Location

Township or Area: Fairlie

Latitude: 51° 1' 16.75"    Longitude: -93° 56' 7.82"

UTM Zone: 15    Easting: 434386.64   Northing: 5652612.049    UTM Datum: NAD83

Resident Geologist District: Red Lake

NTS Grid: 52N04SW

Point Location Description: N/A

Location Method: Data Compilation

Access Description: Southern Shore of Red Lake, north of Russet lake



Exploration History

1936: MacVay Red Lake Gold Mines was incorporated to explore the property. Prospected and trenched 1969: Mid North Engineering Services (Dickenson Mines) explored the property. One diamond drill hole was completed. 1995 Placer Dome Ltd. Acquired the property and conducted ground magnetics survey over the entire property. 1997 Placer Dome conducted a ten-hole diamond drill program followed up by I.P survey and soil geochemistry survey. Number of trenches and stripping were also completed. 2003 Placer Dome conducted a drill program consisting of 5 DDH for a total of 11712.6 feet. In the assessment report only 112 of the 986 samples were processed, also log samples numbers do not correspond with assay sheet sample numbers.


Assessment Work on File

Assessment Work on File
Office File Number Online Assessment File Identifier Online Assessment File Directory
FAIP 113 52N04SW2053 52N04SW2053

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) - GEOLOGICAL DESCRIPTION: The property is underlain primarily by mafic volcanic flows. The flows strike at about 110 deg. and have nearly vertical dips. Flow breccia and pillow structures have been recognized in the area, and the indicated tops are to the north-northeast. Cross cutting the property is a large serpentinite body trending at around 115 deg. to 120 deg., and at the western end, dipping approximated 70 deg. to the north. East of the property a fault trending at 045 deg. has been mapped. Small dioritic to granddioritic dikes have been observed in outcrop and in drill core. DEPOSIT DESCRIPTION: East-west shear zones, with widths up to 10 m have been discovered in the area. These zones contain abundant quartz and carbonate veinlets. Pyrite, arsenopyrite, and locally, sphalerite are present in the veinlets.




Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
Vein 1 Quartz Host
Mafic lava flow-unsubdivided 2 Flow Breccia, Pillow Structures Adjacent
Diorite 3 Dioritite Small Dioritic To Grandodioritic Dikes Near

Mineralization

Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Alteration Style
1GoldEconomicOre
2PyriteEconomicOre
3ArsenopyriteEconomicOre
4SphaleriteEconomicOre
1QuartzEconomicGangue
CarbonateAlterationSilicification1WeakVeins

Mineralization Comments

Dec 07, 2005 (K R Kettles) - A shear zone was trenched over a 10 m width, with samples returning assays as high as 0.10 oz/ton (3.429 g/tonne)Au.



Alteration Comments

Dec 07, 2005 (K R Kettles) - Varying amounts of carbonatization and silicification, and minor chloritization have been observed.




Mineral Record Details

References

Book - ODM, VOL. 49, PART 2, P. 174

Publication Number: ODM VOL.49 Date: 1940

Author: Horwood, H.C.

Publisher Name:

Location: Red Lake RGP


File - Resident Geologist's Files, Red Lake

Publication Number: RGF RL Date: 1969

Author: Crull, E.

Publisher Name:

Location: Red Lake RGP


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

Publication Number: OFR5558 Date: 1987

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

Publisher Name: Ontario Geological Survey

Location:


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