Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI52N04NW00013

Record: MDI52N04NW00013

General

Mineral Record Identification
Record Name(s) Harvey J Showing - 1991
Related Record Type Simple
Related Record(s)
Record Status Discretionary Occurrence
Date Created 1991-Mar-11
Date Last Modified 2022-Jun-28
Created By
Revised By

Commodities

Primary Commodities: Gold



Location

Township or Area: McDonough

Latitude: 51° 8' 19.54"    Longitude: -93° 48' 56.38"

UTM Zone: 15    Easting: 442936.708   Northing: 5665572.036    UTM Datum: NAD83

Resident Geologist District: Red Lake

NTS Grid: 52N04NW

Point Location Description: N/A

Location Method: Conversion from MDI



Exploration History

Prior to 1936: The property was held by the Prospector's Investment Group. 1936: C.Harvey acquired the claims(?). Surface work.


Geology

Province: Superior

Subprovince: Uchi

Terrane: North Caribou

Domain: Uchi

Belt: Red Lake

Geological Age: Archean  

Metamorphism Type: Regional

Metamorphism Grade: Amphibolite



Geology Comments

Dec 07, 2005 (K R Kettles) - GEOLOGICAL DESCRIPTION: The occurrence is underlain by a thick sequence of mafic metavolcanic flows. The flows vary from massive and coarse grained to pillowed. Stratigraphic tops are to the west. Foliation strikes NE-SW and dips approximately 80 deg. southeast. A thick unit of metasedimentary rocks overlies the mafic volcanics. The basal part of the sedimentary sequence is primarily composed of garnetiferous conglomerate. DEPOSIT DESCRIPTION: A quartz vein striking S34 deg. E and dipping 15 deg. to 60 deg. to the west hosts the gold mineralization. The vein has been exposed over a length of 27 m.




Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
Vein 1 Quartz Vein Host
Mafic lava flow-unsubdivided 2 Flows Massive To Pillowed Adjacent
Conglomerate 3 Conglomerate Garnetiferous Adjacent

Lithology Comments

Dec 07, 2005 (K R Kettles) - The occurrence is underlain by a thick sequence of mafic metavolcanic flows. The flows vary from massive and coarse grained to pillowed. Stratigraphic tops are to the west. Foliation strikes NE-SW and dips approximately 80 deg. southeast. A thick unit of metasedimentary rocks overlies the mafic volcanics. The basal part of the sedimentary sequence is primarily composed of garnetiferous conglomerate. A quartz vein striking S34 deg. E and dipping 15 deg. to 60 deg. to the west hosts the gold mineralization. The vein has been exposed over a length of 27 m.




Mineralization

Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Alteration Style
1GoldEconomicOre
1QuartzEconomicGangue
GarnetAlterationHydrothermal1

Mineralization Comments

Dec 07, 2005 (K R Kettles) - MDI1 DATA: GRADE: ASSAYS UP TO 0.03 OPT AU FROM VEIN A quartz vein striking S34 deg. E and dipping 15 deg. to 60 deg. to the west hosts the gold mineralization. The vein has been exposed over a length of 27 m. Assays of up to 0.03 oz/ton (1.029 g/tonne) Au have been reported from the vein.



Alteration Comments

Dec 07, 2005 (K R Kettles) - The conglomerate in the area is garnetiferous.




Mineral Record Details

References

File - Resident Geologist files AF RL 1947 McDonough #15

Publication Number: AF RL 1947 Date: 1947

Author: Thompson, R.

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: 576  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