Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI52N04SW00324

Record: MDI52N04SW00324

General

Mineral Record Identification
Record Name(s) Alcon Occurrence - 1961
Related Record Type Simple
Related Record(s)
Record Status Occurrence
Date Created 1991-Mar-11
Date Last Modified 2022-Jun-14
Created By
Revised By

Commodities

Primary Commodities: Copper, Gold



Location

Township or Area: Faulkenham Lake Area

Latitude: 50° 54' 43.29"    Longitude: -93° 57' 1.89"

UTM Zone: 15    Easting: 433176.57   Northing: 5640471.98    UTM Datum: NAD83

Resident Geologist District: Red Lake

NTS Grid: 52N04SW

Point Location Description: approximate

Location Method: Data Compilation



Exploration History

1961: The property was held by Alcon Exploration and Mining Syndicate Limited. One diamond drill hole completed. 1971: The property was held by C. Fuller Pine of Balmertown. Trenching, stripping and diamond drilling were completed on the property. 1973: The property was held by C. W. Peterson. Prospecting, overburden stripping and one diamond drill hole completed.


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 occurence is located to the west of the Dome Stock and is primarily underlain by mafic volcanic rocks. Thick, massive diorite dikes intrude into the metavolcanic rocks. The basalt units are highly carbonatized and are generally quite massive. In places the mafic volcanics are strongly foliated along a NW-SE trend, and the foliation dips vertically. The mafic volcanics contain up to 20% quartz and carbonate stringers, and barren, white quartz veins up to 50 cm thick. Chalcopyrite is present along the foliation planes, along with minor pyrite and pyrrhotite. Ultramafic dikes (serpentinite) are intruded into the basalt units. DEPOSIT DESCRIPTION: Gold occurs in quartz and carbonate stringers, and in quartz veins in strongly foliated, highly altered basalt. The basalt unit is up to 20 m thick, but only thin zones have returned anomalous gold values. The quartz and carbonate stringers are quite small, and are mineralized with pyrite, pyrrhotite and chalcopyrite.




Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
Vein 1 Quartz Host
Mafic lava flow-unsubdivided 2 Mafic Volcanic Rocks Adjacent
Diorite 3 Diorite Near
Serpentinite 5 Serpentinite Dikes Near

Mineralization

Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Alteration Style
1GoldEconomicOre
2ChalcopyriteEconomicOre
3MagnetiteEconomicOre
4PyriteEconomicOre
5PyrrhotiteEconomicOre
6SphaleriteEconomicOre
1QuartzEconomicGangue
CarbonateAlterationCarbonatization1MediumVeins

Mineralization Comments

Dec 07, 2005 (K R Kettles) - MDI DATA: GRADE 1973 DDH: ASSAYS UP TO 0.01 OPT AU AND 0.62% CU OVER 20 CM, GRADE 1967 DDH: ASSAYS 0.5% NI, 0.06 OPT AU Assays of up to 0.01 oz/ton (0.343 g/tonne) Au and 0.62% Cu over 20 cm were returned from drill core samples.



Alteration Comments

Oct 31, 2014 (K R Kettles) - The rocks in the area have been carbonatized and/or silicified to varying degrees.




Mineral Record Details

References

File - Resident Geologist files AF RL 1970 Fairlie #23A

Publication Number: AF RL 1970 Date: 1970

Author:

Publisher Name:

Location: Red Lake RGP


File - Resident Geologist files AF RL 1973 Fairlie #29

Publication Number: AF RL 1973 Date: 1973

Author: Peterson, C.W.

Publisher Name:

Location: Red Lake RGP


File - Resident Geologist files AF RL 1985 Fairlie #63, 64

Publication Number: AF RL 1985 Date: 1985

Author:

Publisher Name:

Location: Red Lake RGP


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

Publication Number: OFR5558 Page: 469-470  Date: 1987

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

Publisher Name: Ontario Geological Survey

Location:


File - Resident Geologist's Files, Red Lake

Publication Number: RGF 1961 Date: 1961

Author: Kaye, L.

Publisher Name:

Location: Red Lake RGP


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