Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI32D12SW00049

Record: MDI32D12SW00049

General

Commodities

Primary Commodities: Gold

Location

Township or Area: Garrison

Latitude: 48° 31' 15.5"    Longitude: -79° 56' 7.57"

UTM Zone: 17    Easting: 578608.364   Northing: 5374753.855    UTM Datum: NAD83

Resident Geologist District: Kirkland Lake

NTS Grid: 32D12SW

Point Location Description: Point

Location Method: Conversion from MDI

Exploration History

1935: Consolidated Mining & Smelting Company sank a 256 foot inclined shaft with 1033 feet of development on 2 levels. Underground and surface diamond drilling totalled 10 550 feet. 1936: Garrcon Mines Ltd. was incorporated. 1745 feet of underground development and additional diamond drilling. 1937: 4 feet of shaft sinking and 1542 of underground deverlopment. 21 surface diamond drill holes totalling 5070 feet and 33 underground diamond drill holes totalling 5905 feet. 1941: Cosolidated Mining & Smelting completed 1 diamond drill hole totalling 293 feet near the NE corner of L.38950. 1946: Consolidated Mining and Smelting completed a mag survey. pre1949: Consolidated Mining & Smelting completed trenching and 4 diamond drill holes totalling 2110 feet 1985: Jonpol Exploration Ltd. acquired the right to earn 49% interest in the 12 Cominco/Garrcon claims. 1986: Cominco diamond drilling delineated the North Zone for 200 feet along strike and to the 500 foot level with an average width of 10.7 feet. The SOuth Zone was an average of 6 feet in width, 1300 along strike and to a depth of 500 feet. 1987: Jonpol had established a reserve of about 1.5 million tons at 0.04 ounce per ton gold. The Munro Shear zone was identified - 10 feet in width along 250 feet and averaging 0.30 ounce per ton gold. 1988: Jonpol announced an aggregate reserve of 350900 tons grading 0.191 ounce per ton gold. Lac Minerals obtained the right to acquire 50% interest in the property. 2005: ValGold Resources Inc. acquired 100% interest int he property 2006: 9 holes totalling 3348 m were completed 2007: 5 holes totalling 2361 m completed. 2009: Northern Gold Mining optained an option on the property. 11 holes totalling 2330 m completed. 2010: 47 holes totalling 11,250 m completed. Ground mag, VLF-EM surveys, surface stripping and sampling and preliminary metallurgical testing completed. 2011: Northern Gold Mining acquires 100% interest in the property. NI 43-101 resource estimate released.

Assessment Work on File

Geology

Province: Superior

Subprovince: Abitibi

Terrane: Wawa-Abitibi

Belt: Abitibi

Tectonic Assemblage: Timiskaming

Geological Age: Archean  

Lithology

Mineralization

Mineralization Comments

Dec 12, 2011 (D Guidon) - from Hannon et al. (2011) The Garrcon Zone exploration target occurs within the Timiskaming Assemblage adjacent to the Porcupine-Destor fault and is a zone of brecciated, silicified, metasediment with disseminated sulphides (pyrite and arsenopyrite) and irregular quartz veinlets. Preliminary metallurgical testwork indicates that the Garrcon mineralisation is non-refractory and is free milling. Sulphide-bearing gold mineralisation in the Garrcon North and Garrcon Shaft/South zones is hosted by Timiskaming-age sedimentary rock sequences that include greywacke, arkose and iron formation, occurring adjacent to the Destor-Porcupine Fault Zone. These sedimentary sequences have been hydrothermally altered and mineralized in distinct zones persisting to depth. Native gold grains and sulphide-bearing gold mineralisation occurs in quartz-carbonate vein stockworks. In this environment, gold may be encapsulated in sulphides or occur as native grains within crosscutting quartz veins. Principal minerals are native gold, pyrite, magnetite, specularite arsenopyrite, and pyrrhotite with subordinate chalcopyrite, sphalerite and galena. Gangue minerals are vein quartz and carbonate (calcite, dolomite, and ankerite). Pervasive wall rock alteration is common adjacent to the veins, usually consisting of carbonatisation (ankerite or ferroan dolomite) and sulphides (pyrite, arsenopyrite, and pyrrhotite). The model developed identifies a zone that encompasses the Shaft, South and North Zones. It extends over an east-west distance of 800 metres and remains open to the east. The mineralisation averages approximately 300 metres wide, with the narrowest width of 175 metres located on the more sparsely drilled eastern end of the zone, reaching a maximum width of 375 metres in the more densely drilled western portion of the zone. About half of the 800 metre east-west length of the zone is bounded by the Destor-Porcupine fault system on the south and the contact with mafic and ultramafic rocks on the north. Widths are still open on the remainder of the 800 metre strike length. Mineralisation included in the resource extends from surface across the entire zone to a depth of 125 metres on the more sparsely drilled eastern end and reaches a depth of up to 500 metres on the western half of the zone and remains open at depth.

Mineral Record Details

References

File - Resident Geologist files KL-0904, KL-1882

Publication Number: Date:

Author:

Publisher Name:

Location: Kirkland Lake RGP office

Book - Northern Miner January 18, 1988

Publication Number: NMINER Date: 1988

Author:

Publisher Name: Northern Miner

Location:

Mono - Mineral occurrences, deposits, and mines of the Black River-Matheson area

Publication Number: OFR5735 Page: 766-768  Date: 1990

Author: Bath A.C.

Publisher Name: Ontario Geological Survey

Location:

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Ministry Contact Information

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