Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI43D05NE00007

Record: MDI43D05NE00007

General

Commodities

Primary Commodities: Copper, Nickel

Secondary Commodities: Gold, Platinum, Palladium, Cobalt

Location

Township or Area: Springer Lake Area

Latitude: 52° 27' 38.62"    Longitude: -87° 32' 50.83"

UTM Zone: 16    Easting: 462804.28   Northing: 5812424.52    UTM Datum: NAD83

Resident Geologist District: Thunder Bay North

NTS Grid: 43D05NE

Point Location Description: A-Zone from KWG Resources Inc. assessment files.

Location Method: Data Compilation

Access Description: The property is accessible by float plane from commercial bases at Pickle Lake, Armstrong or Nakina.

Exploration History

1957: mag and EM surveys were conducted in an attempt to locate the source of Cu-Ni float that was found on the shores of Bartman Lake. 1959: A.J. MacKinnon optioned the property to Pickle-Patricia Explorers Ltd. 1959: Pickle-Patricia Explorers conducted geological mapping. 1971-74: Canadian Nickel Company Ltd. drilled 46 DDH totalling 19,463’. 1992: KWG Resources Inc. optioned the property from Horn Fault Mines Ltd. KWG conducted line cutting, geophysical surveys (EM, Mag, and VLF-EM) and diamond drilling (10 DDH totalling 5243 ft on A-Zone and 10 DDH totalling 5559 ft on the C & D-Zones). 2003: Property transferred to Aurora Platinum Corp. 2006: AEM and AMAG geophysical surveys were flown. 2008: Property transferred to International Nickel Ventures Corp. 2011: Property transferred to Anglo Swiss Resources Inc. 2014: Anglo Swiss changed its name to Gungnir Resources Inc.

Assessment Work on File

Geology

Province: Superior

Subprovince: Sachigo

Terrane: North Caribou

Belt: Wunnummin Lake

Geological Age: Archean  

Geology Comments

Dec 07, 2005 (Mark O'Brien) - The Rowlandson Lake area is situated in the Sachigo Subprovince, an arcuate group of mafic to felsic metavolcanic and metasedimentary assemblages and synvolcanic plutons which are intruded by younger felsic bodies and larger batholithic complexes. Quartz diorite, diorite, gabbro and anorthosite have intruded the metavolcanic rocks. (Blue Falcon Mines Ltd assessment report, 1992).

Lithology

Lithology Comments

Mar 16, 2016 (Therese Pettigrew) - The A-Zone is underlain mainly by E-W and SE-trending, steeply N- and NE-dipping mafic volcanic and gabbroic rocks. Minor felsic sediments, felsic volcanics, mafic sediments or mudstones and banded iron formation are intercalated with the mafic volcanics. The gabbros are intruded into the volcanic sequence (mainly basalts) and are texturally and compositionally similar to the basalts. The lithological sequence is described as follows. The most northerly-located hole (92-A-4) collared in diorite, a light to medium green-grey to whitish rock with 15-40% amphibolite content and 60-85% feldspar. This grades into a gabbro which is medium- to coarse-grained with 40-60% amphiboles and 40-60% feldspar. The gabbro varies in composition and texture to mafic gabbro, pegmatitic and anorthositic gabbro and gabbro-basalt breccia being the more common. Overlying the gabbro is an ultramafic unit which has a high amphibolite and chlorite content with disseminated sulphides and massive sulphides between holes 92-A-10 and 92-A-4. Next in the sequence is a wide (460’) basaltic lava with some variation in texture as fragmentals, pillow breccias, very fine-grained banded volcanic sediment or mudstone and medium-grained basalts. Within the basalts are felsic sediments (tuffs) and banded iron formation. The felsic sediments are very fine grained with chlorite and biotite streaks and minor accessory disseminated sulphides and mm-scale beds of magnetite. The structural footwall of the drilled section of the A-Zone is a medium- to coarse-grained gabbro which is the host lithology to the main sulphide mineralization. The gabbro varies in composition and texture to a diorite, which has less ferromagnesium minerals and an increase in quartz. The sulphides occur as widespread disseminated mineralization and in places grades into massive sulphides (AFRI 43D05NE0002).

Mineralization

Mineralization Comments

Mar 16, 2016 (Therese Pettigrew) - The results of the 1992 exploration program on the A-Zone indicate the concordant sulphide mineralization is part of a larger VMS deposit with zones of up to 95 feet wide and grades of 0.2 to 0.4% Cu and 0.1 to 0.2% Ni. The average of all the intersections for subzone A-B is 0.32% Cu and 0.21% Ni over 86.95’. The main sulphides are pyrrhotite with minor chalcopyrite, pentlandite, pyrite and arsenopyrite. The sulphides occur as massive, stratabound layers or as disseminated interstitial mineralization to the silicates. There are 3 near-parallel but discontinuous trends representative of the three sulphide zones in the west part of the grid. In the east, the southern-most trend converges with the main trend while the northern-most trend swings to the NE. Faulting appears to have offset the stratigraphy and mineralized zones, especially at the west end of the grid (AFRI 43D05NE0002).

Mineral Record Details

References

Mono - Mineral Occurrences and Prospects in the Fort Hope-Winisk Area

Publication Number: OFR5926 Scale:     Date: 1995

Author: Mason J.K., White G.D.

Publisher Name: Ontario Geological Survey

Location:

Map - Rowlandson Lake area, District of Kenora (Patricia Portion), Ontario

Publication Number: ARM49N Scale: 1:126,720    Date: 1997

Author: Prest V.K.

Publisher Name: Ontario Dept. of Mines

Location:

Part - Geology of the Rowlandson Lake area

Publication Number: ARV49-08.001 Scale:     Date: 1997

Author: Prest V.K.

Publisher Name: Ontario Dept. of Mines

Location:

Map - Fort Hope-Lansdowne House sheet, geological compilation series, Cochrane, Kenora, and Thunder Bay districts

Publication Number: M2237 Scale: 1:253,440    Date: 1972

Author: Thurston P.C., Carter M.W., Riley R.A.

Publisher Name: Ontario Dept. of Mines and Northern Affairs

Location:

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For detailed information regarding this mineral record please contact the Thunder Bay North Resident Geologist District Office