Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI52N04SW00083

Record: MDI52N04SW00083

General

Commodities

Primary Commodities: Gold

Location

Township or Area: Heyson

Latitude: 51° 0' 49.11"    Longitude: -93° 52' 2.81"

UTM Zone: 15    Easting: 439150   Northing: 5651700    UTM Datum: NAD83

Resident Geologist District: Red Lake

NTS Grid: 52N04SW

Point Location Description: OFR5558 p. 519

Location Method: Data Compilation

Access Description: From the town of Red Lake to Forestry Point Road, to 'bush' roads

Exploration History

1925: claims staked by Red Lake Mines Ltd. 1936: Coin Lake Gold Mines: acquired the property from Red Lake Bay Mines Ltd.; stripping, trenching, ground geophysics, DD-22 (2377 m). 1946-47: My-Ritt Red Lake Gold Mines Ltd. conducted an exploration program of trenching, prospecting, and a magnetic survey. 1971: Cochenour Willans Gold Mines Ltd. optioned the property from My-Ritt Gold Mines Ltd. - ground geophysics (VLF-EM and IP), GC, DD-3-528 m. 1980: Wilanour acquired the property. 1987-88: Chevron drilled 7 DDH and completed an IP survey. 2002: Wolfden Resources Ltd. and Kinross Gold Corp. obtained rights to the property from Explorer Alliance Corp. and drilled 6 DDH totalling 1786 m. 2004-5: Wolfden drilled 31 DDH totalling 9530 m. 2006: Wolfden drilled 4 DDH totalling 2964 m. 2009-10: Skybridge Development Corp, which later merged with Mega Silver Inc. to form Mega Precious Metals Inc. acquired the claims from Premier Gold Mines Ltd. & Sabina Silver Corp. Mega Precious conducted airborne EM/magnetic surveys and drilled 36 DDH totalling 6176 m. 2011: Mega Precious conducted a 29 DDH program totalling 6853 m.

Assessment Work on File

Geology

Province: Superior

Subprovince: Uchi

Terrane: North Caribou

Domain: Uchi

Belt: Red Lake

Geological Age: Neoarchean  

Metamorphism Type: Regional

Metamorphism Grade: Greenschist

Geology Comments

Jan 30, 2015 (Therese Pettigrew) - The Balmer assemblage and the Dome stock underlie the East My-Ritt property. The Balmer assemblage (ca. 2990 Ma) is made up of tholeiitic basalt, basaltic komatiite and komatiite interlayered with subordinate chert-magnetite iron formation; minor clastic metasedimentary rocks; minor intermediate to felsic pyroclastic rocks; and rhyolite. The Dome stock (ca. 2718 Ma) is predominantly granodiorite, with subordinate augite porphyritic diorite/gabbro. The large majority of the property is underlain by the southern part of the Dome stock, which is characterized by equigranular, medium-grained granodiorite exhibiting a local ENE-trending fabric. Numerous small intermediate to mafic dykes occur on the property, most of which are parallel to the local foliation. There is a larger, roughly 8 m wide auriferous diabase dyke in the NE of the Laverty claims, which has been thoroughly mapped and tested. Numerous alteration assemblages show up within the granodiorite, especially where shearing is more developed. These include but are not limited to weak to strong quartz/carbonate ± tourmaline, K-spar ± sericite, quartz/sausserite/chlorite, localized magnetite, and combinations thereof. The most southern part of the East My-Ritt claim group is partially underlain by rocks of the Balmer assemblage. Here the Balmer rocks consist of middle tholeiitic basalts as massive and pillowed flows, typically moderately chlorite and carbonate altered. Proximal to the contact between this volcanic unit and the Dome stock, strong shearing, weak to moderate silicification and magnetite alteration is also evident. Gold mineralization is typically in sheared zones within the granodiorite, and related to quartz ± carbonate ± tourmaline ± epidote hydrothermal alterations and veining (AFRO 2.45024).

Lithology

Lithology Comments

Dec 07, 2005 (K R Kettles) - Most of the property is underlain by the Dome granodiorite Stock. The western portion of the property is underlain by serpentinite. Mafic dikes occupying shear zones are present in this part of the Dome Stock. The two most prominent shear zones strike ENE, dipping 60 deg. S and NNW dipping 85 deg. N. Gold mineralization occurs in quartz-carbonate veins within shear zones hosted by the granodiorite. The mineralizaion occurs in shear zones within the granodiorite. Quartz-carbonate stringers, which occur in the shears, are mineralized with gold, pyrite and minor chalcopyrite. A strong I.P. anomaly was loocated on the property. It si due to the pyritic quartz-carbonate zones.

Mineralization

Mineralization Comments

Nov 03, 2014 (K R Kettles) - Gold mineralization occurs in quartz-carbonate veins within shear zones hosted by the granodiorite. The mineralizaion occurs in shear zones within the granodiorite. Quartz-carbonate stringers, which occur in the shears, are mineralized with gold, pyrite and minor chalcopyrite. The drill hole intersected two zones which returned good values. From 32.3 m to 41.8 m (9.5 m), an average grade of 0.056 oz/ton (1.919 g/tonne) was obtained. The interval from 217.3 m to 217.8 m (0.5 m) assayed 0.95 oz/ton (32.57 g/tonne) Au.

Jan 30, 2015 (A McKee) - Multiple assays returned. Generally below 0.5 ppm Au, ranging up to 2.119 ppm Au over 1.5 m.

Alteration Comments

Dec 07, 2005 (K R Kettles) - In the vicinity of the shear zones, the granodiorite is altered to a salmon pink colour. Alteration includes sericitization, epidotization, silicification and saussuritization.

Mineral Record Details

References

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

Publication Number: OFR5558 Scale:     Date: 1987

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

Publisher Name: Ontario Geological Survey

Map - Heyson Township, northern part, Kenora District

Publication Number: M2125 Scale: 1:12,000    Date: 1968

Author: Ferguson S.A.

Publisher Name: Ontario Dept. of Mines

Publication - Technical Report and Updated Resource Estimation, North Madsen Property, Red Lake, Ontario

Publication Number: 2014 43-101 Scale:     Date: 2014

Author: McCracken, T., Utiger, M.

Publisher Name: WSP Canada for Mega Precious Metals

Map - Geology and gold mineralization, Red Lake greenstone belt

Publication Number: P3107 Scale: 1:50,000    Date: 1991

Author: Durocher M.E., Burchell P.S., Wallace H., Andrews A.J., Hugon H., Atkinson B.T.

Publisher Name: Ontario Geological Survey

Map - Precambrian Geology, Red Lake

Publication Number: P3227 Scale: 1:50,000    Date: 1993

Author: Atkinson B.T., Stone D.

Publisher Name: Ontario Geological Survey

Map - Geology and Tectonostratigraphic Assemblages, East Uchi Subprovince, Red Lake and Birch-Uchi Belts, Ontario

Publication Number: P3460 Scale: 1:250,000    Date: 2004

Author: Sanborn-Barrie M., Rogers N., Skulski T., Parker J.R., McNicoll V.J., Devaney J.R.

Publisher Name: Geological Survey of Canada, Ontario Geological Survey

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