Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI32D04SE00017

Record: MDI32D04SE00017

General

Commodities

Primary Commodities: Gold

Secondary Commodities: Silver

Location

Township or Area: McVittie

Latitude: 48° 7' 5.94"    Longitude: -79° 41' 54.26"

UTM Zone: 17    Easting: 596870   Northing: 5330270    UTM Datum: NAD83

Resident Geologist District: Kirkland Lake

NTS Grid: 32D04SE

Point Location Description: Central portion of pit - located from Google Earth

Location Method: Other

Access Description: The Property is located 30 km east of Kirkland Lake and 3 km east of Larder Lake, along Highway 66. The area is serviced by Ontario Northland bus and railway services, with a train station situated at Swastika. The Property is crossed by Trans-Canada Highway 66 which connects Kirkland Lake to Rouyn-Noranda.

Exploration History

1914-1929: Costello discovered gold on the property on claim L1794. Development started in 1920 and trenching and drilling identified the extension of the vein. Ground to the east was staked in 1921 by the Crown Reserve Mining Company Limited. The Costello claim was sold to Canadian Associated Goldfields Limited. Both conducted underground exploration. Both mined until 1929 when both companies went backrupt. 1936-1947: Omega Gold Mines was formed in 1936 and produced gold from the property until 1947. 1950: Lomega Gold Mines was formed and it completed a single deep drill hole. 1974: Prospector D. Lowe discovered gold on the west group. Grasset Lake Mines Limited completed 6 diamond drill holes in 1975. This claim and the Omega claims were acquired by R.J. Kasner. This became Lenora Explorations Ltd. in 1979. 1976: Kasner completed ground geophysics over the property. 1983: Lenora Explorations Ltd. completed detailed ground geophysics, test pitting, surface trenching, channel sampling and diamond drilling. 2011-2012: Mistango River Resources Inc. completed geophysics, soil sampling and diamond drilling.

Assessment Work on File

Geology

Province: Superior

Subprovince: Abitibi

Terrane: Wawa-Abitibi

Belt: Abitibi

Tectonic Assemblage: Timiskaming

Geological Age: Archean  

Geology Comments

Jun 24, 2013 (D Guidon) - From Webster and Pitman (2012) The Abitibi Greenstone belt is a sub-province of the Archean Superior Province of the Canadian Shield. The Abitibi Belt is truncated by the Grenville Structural Zone on its southeast side and the Kapuskasing Structural Zone to the west. The Opatica gneiss belt marks the northern boundary and the Huronian Supergroup sediments overlie the rocks of the Abitibi to the south side of the belt. The southern volcanic zone (SVZ) of the Late Archean Abitibi belt of the Superior province of Canada is dominated by komatiitic to tholeiitic volcanic plateaus and large, bimodal, mafic-felsic volcanic centres. These volcanic rocks were erupted between about 2717 Ma and 2700 Ma in a series of rift basins that formed as a result of wrench-fault tectonics. They overlie and juxtapose a volcano-plutonic assemblage characterized in the northern Abitibi belt. The age of the assemblage is about 2720 Ma or older, and it comprises basaltic to andesitic and dacitic subaqueous massive volcanics, cored by comagmatic sills and layered anorthositic complexes. They are overlain by felsic pyroclastic rocks that were comagmatic with the emplacement of tonalitic plutons at 2717 ± 2 Ma. The oldest sequence in the Kirkland Lake - Larder Lake area is Precambrian Abitibi volcanics interbedded with slate and chert, dated between 2747 Ma and 2705 Ma. They range in composition from komatiites and tholeiites at the stratigraphic base to calc-alkaline volcanics at the top. This sequence contains long narrow bodies of diorite and gabbro, as well as coarser-grained flows and was subsequently deformed into a series of regionally ESE-WNW trending folds. Timiskaming Group interbedded sediments and alkali volcanics dated circa 2680 Ma, unconformably overlie the older volcanics and their deposition is spatially associated with the Larder Lake-Cadillac Break (LLCB). The Timiskaming Group sediments are comprised of two sequences, one non-marine fluvial in origin and the other of sub-marine fans, intercalated with several volcanic sequences varying in composition from intermediate to basic and suggestive of an island arc origin. These units form a long, relatively narrow, east-west trending belt which was intruded by a number of syenite and porphyry stocks and dykes dated 2673 Ma. Contemporaneous lamprophyre and diabase dykes are widespread throughout the region. Most of the diabase is of the "Matachewan" swarm of north-striking dykes dated at 2485 Ma. Undeformed Proterozoic age Huronian Supergroup sedimentary rocks, primarily of the Cobalt Group, unconformably overlie the Achaean basement, which are in turn are intruded by Nipissing diabase dykes dated at 2200 Ma.

Mineralization

Mineralization Comments

Jun 24, 2013 (D Guidon) - From Webster and Pitman (2012) The two most prominent gold-bearing structures in the region are the C-LLDZ and the Kirkland Lake -Main Break (KLMB). The C-LLDZ is a regionally extensive shear zone, characterized by the development of mica schists and locally marked by hydrothermal alteration (silicification, sulphidation and carbonatization), and the development of quartz stockwork and breccia. Green mica (fuchsite) is commonly developed where alteration overprints ultramafic rocks. This structure is considered to be the western extension of the Malartic-Cadillac Deformation Zone, making this structure more than 160 km long. The zone has the appearance of being a south-dipping reverse fault, in which the south-side seems to have moved upwards and eastward relative to the north-side. However, the zone has also been described as a slightly overturned normal fault structure. The KLMB is a fault zone branching north-westerly from the C-LLDZ near Kenogami Lake. This structure has been identified in all the gold mines in Kirkland Lake down to depths of more than 2 kms. The structure varies from a single plane to multiple bifurcating planes. The widest ore bodies occur where the cross-over faults and the tension fractures between the planes are most numerous.

Alteration Comments

Jun 24, 2013 (D Guidon) - From Webster and Pitman (2012) The Property lies on the southern limb of an overturned anticline which has its axis lying sub-parallel to the northern boundary of the property (Hinse, 1981). The anticline is sharply folded and overturned to the north and is broken by a thrust fault following the strike of the fold, suggesting a roll-over anticline at the leading edge of the thrust. The rocks along this limb face north and are overturned, dipping ~60° south (Jenney, 1941). Jenney, 1941 also states that the south side is displaced upwards, but the amount of movement is not known. At least a part of the movement is post-ore as indicated by vein fragments in the fault gouge and by the drag of the ore along the fault plane.

Mineral Record Details

References

File - Resident Geologist files KL-0616

Publication Number: Date:

Author:

Publisher Name:

Location: Kirkland Lake RGP office

Publication - Omega Property, McVittie Township, Ontario, Canada; Technical Report for Mistango River Resources Inc.

Publication Number: 2012 NI 43-101 Date: 2012

Author: Webster, R. and Pitman, C.

Publisher Name: SEDAR

Location: Kirkland Lake RGP office

Part - Larder Lake gold area

Publication Number: ARV33-03.001 Page: 11-20  Date: 1998

Author: Hopkins P.E.

Publisher Name: Ontario Dept. of Mines

Location:

Mono - Mineral resources and mining properties in the Kirkland Lake-Larder Lake area

Publication Number: MDC003 Page: 58-59  Date: 1964

Author: Savage W.S.

Publisher Name: Ontario Dept. of Mines

Location:

Mono - Gold deposits of Ontario, part 2, part of District of Cochrane, districts of Muskoka, Nipissing, Parry Sound, Sudbury, Timiskaming, and counties of southern Ontario

Publication Number: MDC018 Page: 155-156  Date: 1979

Author: Gordon J.B., Lovell H.L., de Grijs J.W., Davie R.F.

Publisher Name: Ontario Geological Survey

Location:

Mono - Preliminary report on the Timmins-Kirkland Lake area, gold deposits file

Publication Number: OFR5467 Page: G0159  Date: 1983

Author: Hodgson C.J.

Publisher Name: Ontario Geological Survey

Location:

Compend - Report of activities, 1983, Regional and Resident Geologists

Publication Number: MP117 Page: 139  Date: 1984

Author: Kustra C.R.

Publisher Name: Ontario Geological Survey

Location:

File - Res/Reg Property Visit Report #378

Publication Number: PV-378 Date: 1901

Author:

Publisher Name:

Location: Kirkland Lake RGP office

File - Res/Reg Property Visit Report #380

Publication Number: PV-380 Date: 1901

Author:

Publisher Name:

Location: Kirkland Lake RGP office

Map - Geological Compilation of the Central Abitibi Greenstone Belt: Kapuskasing Structural Zone to the Quebec Border

Publication Number: P3565 Scale: 1:250,000    Date: 2005

Author: Ayer J.A., Berger B.R., Hall L.A.F., Houlé M.G., Johns G.W., Josey S.D., Madon Z.B., Rainsford D.R.B., Trowell N.F., Vaillancourt C.

Publisher Name: Ontario Geological Survey

Location:

File - Res/Reg Property Visit Report #379

Publication Number: PV-379 Date: 1901

Author:

Publisher Name:

Location: Kirkland Lake RGP office

Book - A technical review of the Omega gold mine property, Ontario, Canada for Mistango River Resources Inc.

Publication Number: 2011 NI 43-101 Date: 2011

Author: Power-Fardy, D.

Publisher Name: SEDAR

Location: Kirkland Lake RGP office

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