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post-creek-halcyon

post creek overview

 

The Post Creek project is located 35 km east of Sudbury in Norman and Parkin townships and consists of 35 contiguous unpatented mining claims and one isolated claim covering an area of 976 hectares (Figure 1). The Halcyon property is located 35 km north-northeast of Sudbury in the SE corner of Parkin Twp. at latitude 46º 48' N and Longitude 80º 50'W. It consists of 53 unpatented mining claim units (864 hectares) and both properties are readily accessible by paved, all-weather gravel and bush roads. These adjacent properties are strategically located 1.2 km north-northeast of the producing Podolsky North and Podolsky copper-nickel-platinum group metal deposit of KGHM International Ltd., a subsidiary of KGHM Polska Miedz S.A. The property lies along the north-east extension of the Whistle Offset Structure which is a major geological control for Ni-Cu-PGM mineralization in the area.

Offset Dykes account for a significant portion of all the ore mined in the Sudbury Mining Camp and continues to be a significant and favourable exploration target. They continue to produce large high-grade copper-nickel-PGE deposits including additional zones at Vale's long-lived North and South Mines hosted by the Copper Cliff offset dyke, new mines like Quadra-FNX’s Podolsky Mine located on the Whistle Offset Dyke, recent development projects such as Vale’s Totten Deposit, and significant discoveries like Quadra-FNX’s Victoria Deposit.

North American Nickel believes the properties host the extension of the Whistle Offset Structure and associated quartz diorite dykes with copper, nickel and PGM mineralization. Detailed prospecting and geological mapping, ground geophysical and soil geochemical surveys and historic data compilation have been completed. The Company continues to search out a JV partner to follow-up the CJ Embayment Structure (Figure 2).

 

GEOLOGY & MINERALIZATION

On June 16th, 2011, North American Nickel announced the discovery of an interpreted Quartz Diorite (“QD”) dyke by prospector Cecil Johnson on its Post Creek property in the North Range of the Sudbury Basin, approximately 2.8 km north of the currently producing Podolsky nickel-copper-PGE Mine (Figure 2). Quartz Diorite dykes form in fractures developed during meteorite impact and are common hosts for significant orebodies of nickel-copper-platinum group metal mined in the Sudbury Basin.

Subsequent to ongoing exploration the QD dyke has been re-interpreted as an embayment structure (the “CJ Embayment”) and has been traced by mechanical outcrop stripping and power washing for a distance of 450 metres in a northeast-southwest direction. Based on work to date, it is 7-15 metres wide, inclusion- and partial melt-bearing, and has an approximate north-south trend. Mineralization includes 1-2% disseminated pyrrhotite and chalcopyrite.

NAN geologists and staff were given the opportunity to visit the Podolsky Mine in 2010 accompanied by Quadra-FNX geologists. This trip permitted North American Nickel staff to become familiar with the geological setting and style of mineralization at Podolsky Mine and to use these observations in their daily exploration of the Whistle Offset Structure on Post Creek. Figure 3 from the Podolsky underground tour is included below.


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    Figure 3: Veins of solid chalcopyrite with nickel and platinum group mineralization in the Podolsky Mine.

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RESULTS

In 2010, North American Nickel began outcrop stripping, washing and detailed mapping along with beep mat geophysical surveys to assess the Whistle Offset Structure for shallowly-buried mineralization. Elevated EM responses were obtained and these areas were stripped of overburden using an excavator and washed using a Wajax pump. Exposed mineralization was sampled and assayed for Ni, Cu, Co Au, Pt and Pd. Results documented elevated gold at 29g/t, 17g/t and 1.5g/t; silver values at 18.7 g/t and copper at 15%, 1.9% and 1,1% (Figure 4). Mobile Metal Ions soil geochemical surveys were also undertaken over airborne VTEM geophysical survey results and ground IP and magnetic surveys. Grid cutting and grid refurbishing was completed in preparation for a deep-looking ground geophysical survey using Abitibi Geophysics InfiniTEM system.

On June 16th, 2011, North American Nickel announced the discovery of a previously unrecognized Quartz Diorite (“QD”) dyke in outcrop on its North Range Post Creek property. The QD Dyke occurs within the extension of the Whistle Offset structure, host to the Podolsky Mine. The QD dyke discovered by North American Nickel prospector Cecil Johnson has been named the “the Cecil Johnson Offset Dyke” or “CJ#1”.

The QD dyke and associated outcrop has been traced for a distance of 450 metres, is 7-15 metres wide, inclusion-bearing, and has an approximate north-south trend. See Figures below for location. Mineralization in the dyke observed to date includes 1-2% disseminated pyrrhotite, chalcopyrite, and pyrite (Figure 5).

In 2011 a deep-looking ground EM geophysical survey contracted by NAN and undertaken by Abitibi Geophysics on the Post Creek property has documented the presence of EM anomalies within the Embayment. In late 2011 seven holes were drilled for a total of 1532 m on the CJ Embayment EM targets. The drill program was designed to test several ground geophysical InfiniTEM electro-magnetic (“EM”) targets associated with the newly recognized CJ Embayment. The anomalies were explained by heavily disseminated to near-solid pyrrhotite, pyrite and minor chalcopyrite hosted within large blocks of mafic volcanic rocks encapsulated by the embayment and within oxide and lean iron formation. Assays from drill core indicated low base and precious metal values.

Although ore grade mineralization was not discovered by this phase of drilling, initial results are encouraging. The Post Creek-Halcyon exploration programs based on ground InfiniTEM surveys, borehole pulse EM (BHPEM) surveys and diamond drilling evaluated approximately 25% of the known CJ Embayment to a depth of 250-300 m.

All technical information has been reviewed by Dr. Mark Fedikow, P.Geo., who is the Qualified Person for the Company, President and Interim CEO, North American Nickel Inc


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    Figure 4: Summary of exploration results, Post Creek-Halcyon.


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    Figure 5: Quartz diorite ("QD") of the Johnson Offset Dyke, Post Creek property. Note inclusions and pyrrhotite-chalcopyrite mineralization.

ACTIVITY/WORKPLANS

 

The 2011 exploration program consisted of prospecting, geological mapping, InfiniTEM ground geophysical surveys and 1532 m of diamond drilling and assessed the upper 300 m of approximately 25% of the known extent of the CJ Embayment on the Post Creek and Halcyon properties. Copper-nickel-PGM mineralization hosted within the Embayment occurs at surface in the North Zone and at approximately 500 m below surface in the 2000 Zone within the Podolsky Mine. The depth of the 2000 Zone suggests significant potential for copper-nickel-platinum group metals-gold and silver mineralization is present below the 300 m level of the 2011 exploration within the CJ Embayment.

The Company will search for a joint venture partner to continue exploration on the CJ Embayment structure.