Commander Resources Ltd.
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PROPERTY DETAILS

  • Glenmorangie Property
  • 277 Claims
  • 5,900 hectares along a 20km trend

OWNERSHIP

  • 155 claims 100% Commander (CMD)
  • 127 claims earn in over 4 years.

LOGISTICS

  • Approx 275 km along an all season road from Watson Lake.
  • 8 km west of North American Tungsten mine.



Introduction

The property is situated within the Watson Lake mining district of the Yukon and approximately 275 km from Watson Lake. It is easily accessible by the all-weather Nahanni Range road, which leads to the Canada Tungsten mine located 8 km directly east of the claims. The claims lie along a 20 km linear trend and are separated into 2 blocks. The northern block is comprised of the Glen, Rubus, LH, Swag and Scheer claims and the southern block comprises the Glen, Zanzibar and the Red Bluff claims. Commander staked the 150 Glen claims in May of 2011 and entered into an option agreement for the other 127 claims with well-known Yukon Prospectors, Gary Lee, Ron Stack and Bob Scott. The property covers 5,900 hectares along the 20 km trend.

The area has continued to undergo a resurgence of interest, following the continued success of our neighbours to the south, Aben Resources and Northern Tiger Resources Ltd. Staking has advanced up to the Glenmorangie boundary and several camps were active along the Hyland valley during the exploration season.

2012 Field Program

In-fill geochemical sampling of the two anomalous zones was completed with the collection of 401 soil samples. 27 grab rock samples and 9 silt samples were also submitted for assay. The assay procedure was changed this year to include a fire assay on all rock samples and a heavier aliquot (25g) sample for soils. In addition, 9 HMC samples were collected. This has been found to be an effective way of discovering gold present in silt samples. These bulk samples have been submitted to Overburden Drilling Management. Further mapping was also carried out across the claims.

The results of the 2012 field season are summarised as follows:
  • Calcareous clastic sedimentary rocks, similar to those found within the Yusezyu formation have been found on the claims, suggesting a more complex history of deformation than previously thought.
  • Grab rock samples assaying up to 1.12 g/t Au were found in quartz veins on the Camp Zone.
  • Assay values up to 1050 ppb (1.05 g/t) Au in soils were found on the Camp Zone.
  • Strong indicator element signatures of Bismuth and Arsenic are associated with the anomalous gold figures, suggesting possibilities of buried intrusions being the source of mineralization.



2011 Field Program

The area was extensively mapped, and 1,396 soil samples, 159 rocks and 52 stream silt samples and 5 Heavy Metal Concentrate (HMC) samples were collected. All samples except for the HMC samples, were submitted to ALS Mineral Services labs, located in Whitehorse.

These results were announced in early 2012, the highlights of which can be summarised as follows:
  • The geochemical survey established that there are two anomalous gold zones located on the claims, the one in the northern block is called the Camp Zone, and the one in the southern block is called the Hidden Valley zone.
  • Values of upto 131 ppb gold in soils, 4.5 g/t gold in rocks were found.
  • Values of upto 1.06 g/t silver in soils, 63.6 g/t silver in rocks were found
  • 8 visible gold grains were found in one heavy metal concentrate, which was sampled from a stream draining from the Hidden Valley zone. This calculates to 20,478 ppb gold (20 g/t Au).
  • Mapping of the area has found evidence of multi deformational events, suggesting the area is more complex than previously recognized. Most of the gold mineralization is hosted in quartz veins.
  • Several intrusive bodies have been found on the property, which had not been previously identified.


Exploration History of the area

Following the discovery of the Canada Tungsten mine in 1954, exploration activities in the area increased. The following is a brief summary of known historical activities:
  1. The Ricardo showing, a gossanous outcrop located on the Nahanni range road, was staked in 1961 but no work was carried out. It was re-staked in 1980 and 1981.
  2. 1981, Union Carbide staked the Tuna property which lies to the south of the Red Bluff claims. This is a granodiorite stock exposed at surface, which has intruded slates and phyllites. Work identified numerous scheelite, moly, and chalcopyrite occurrences, associated with quartz tourmaline veins
  3. 1989 - Noranda staked the same claims - no work performed.
  4. 1991 - Kokanee Exploration staked the same claims - carried out mapping, prospecting and sampling.
  5. Gold discovered in 1984 on the Culvert claims - re-staked in 2005. Property has been optioned to Stakeholder Gold Corporation. Work is on-going.
  6. 1996, following a regional stream sedimentary program, Phelps Dodge staked the Hy claims (now part of the Archer Cathro package). Soil and rock sampling returned values as high as 3.7 g/t Au in quartz veined meta sediments of the Highland Group.
  7. 1996, Westmin Resources staked the Fer claims - focused on silicified pyrite/ arsenopyrite quartz vein stockwork zones.
  8. 1996, Sprogge claims staked, which now form part of the 3Ace property.
Exploration history of the Property

Gold was originally found by Prospector Gary Lee and his partners when panning a culvert on the Nahanni Road. They then traced this find upstream and found mineralised quartz veins. The veins are hosted in phyllites and argillites and source of mineralization was suspected to be from a buried intrusion of the Tombstone Plutonic suite. A regional airborne survey has been flown across the area and which highlights the strong north-west regional strain but spacing of the flight lines was too far apart to be useful at a property scale.

During 2009 and 2010, soil and rock geochemical sampling was carried out across the property under a YMIP program. In addition to sampling, a basic ground borne survey was carried out, using a VLF-EM instrument and a magnetometer.

Regional Geology

The region falls within the Tintina Gold Province which stretches from Fairbanks in Alaska to the south western portion of the North West Territories. The province has been recognized as hosting intrusion related gold systems related to mid to late Cretaceous suite of intrusives, known as the Tombstone plutonic suites, for example, Brewery Creek deposit (13.3 Mt @ 1.4 g/t Au), and Dublin Gulch (Eagle deposit with an indicated 4.8 M oz of contained gold).


The area falls within the sedimentary package of the Selwyn Basin, which was an ancient deep sea basin lying westward of the shallower Mckenzie basin. These basins formed what is known as the Cordilleran miogeocline, defined as a westward thickening sedimentary prism that accumulated on the westerly sloping basement of Ancestral North America from the late Proterozoic to Jurassic time (Gabrielse 1991). Locally, the region has been separated into two distinct units by a large fault called the March Fault, which has been mapped along the little Hyland river valley. The basin is structurally bounded by the Tintina strike slip fault to the south west, and to the north by the Dawson thrust fault.

The rocks to the north east of this fault are called the Vampire formation, an upper Proterozoic to lower Cambrian aged sequence of dark brown, fine grained thinly bedded argillaceous sandstone and siltstone, with minor interbedded orthoquartzite, phyllite, slate and argillite. To the south west of the March fault lie thin to thickly bedded brown to green shales, fine to coarse grained sandstones, conglomerates, minor argillaceous limestone, phyllites, psammites and minor marble belonging to the upper Proterozoic to Cambrian Hyland Group. This Group is sub divided between the clastic sediments of the lower Yusezyu formation, and the shales of the upper Nachilla formation, which is regarded as contemporaneous with the Vampire formation. Further to the east and proximal to the Cantung mine, lies the Cambrian Rabbitkettle formation of the Mackenzie basin, consisting of platform carbonates.

Underlying and exposed at surface in some localities are mid Cretaceous aged plutonic suites, called the Tombstone Plutonic Suite (97Ma to 91 Ma). The suite consists of K feldspar, porphyritic, biotitic monzonite and granodiorite. These intrusives are recognized as the main source of gold mineralizing systems in the Yukon and Alaska, and have created several styles of mineralization, namely:
  • large flat veins (Pogo)
  • Sheeted veins (Fort Knox and Dublin Gulch)
  • Breccia and stockwork (Shotgun)
  • Dike and sill hosted veinlets (Brewery Creek and Donlin Creek)
The various styles of gold mineralization are attributed to depth of emplacement. Associated indicator elements are related also to depth emplacement such that shallow level deposits contain elevated levels of antimony, arsenic and locally, base metals, whereas bismuth, tungsten and arsenic are indicators for deeper systems.

There have been at least 3 phases of deformation in the area. The March fault which runs parallel with the Hyland valley in a north-west direction has been recognized as a major decollement fault and during the closure of the Selwyn basin, the lower Yusezyu formation was thrust up with a north east verging direction, and possibly over the younger Vampire formation to the east. The timing of this is event is unknown but probably represents late Jurassic and early Cretaceous plate convergence. A phase of basin folding with large open similar folds followed, creating the Selwyn fold belt. At some period in the Cretaceous period, the March fault was re-activated as a sinstral strike slip shear, parallel to the Tintina fault. This allowed room for intrusive magmatism during the mid to upper Cretaceous and was followed by extensional rifting and faulting, which have been mapped in a north to north-east direction

Property Geology


The property has not been extensively mapped but has been recognized as being within the Vampire formation of the ancient Selwyn Basin. The Vampire formation is recognized as an upper Proterozoic to lower Cambrian aged sequence of dark brown, fine grained thinly bedded argillaceous sandstone and siltstone, with minor interbedded orthoquartzite, phyllite, slate and argillite. An exposed mid Cretaceous aged granodioritic intrusion is situated at the southern end of the claims.

Mapping to date has added some interesting in-fill data to the property:
  1. The discovery of intrusive rocks in several locales across the property and therefore more abundant than the regional mapping had exposed.
  2. The meta sedimentary units have in some areas been locally prograded from a low grade phyllite to a medium grade schist level of metamorphism, suggesting at least two phases of metamorphism.
  3. Hornfelsed meta sedimentary rocks were also found, suggesting a localized aureole being created around a buried intrusive body.
  4. A nodular calcareous sedimentary unit was identified in 2012 and which does not fit the description for the Vampire formation but rather that of the Yusezyu formation.
  5. This unit is found in the north and south block along the western flank of the hill running parallel with the valley. It is isoclinally folded and steeply plunging in a north-west direction. The significance to this find is that Northern Tiger Resources located to the south-west are discovering that this unit is significantly gold mineralized. Although this unit should be to the west of the March fault, finding it on the Glenmorangie claims suggests the unit was thrust up and over the Vampire formation, and then during strike slip motion along the March fault was drag folded sub parallel to the March fault.
  6. Quartz veins were located on what is now known as the Camp Zone, and which have associated arsenopyrite and gold mineralization.
  7. In addition, several faults were mapped and predominantly situated in a north to north east strike direction, suggesting a more recent structural overprint to the area.
The soil and rock geochemistry program has identified two anomalous zones, the Camp Zone and the Hidden Valley Zone, with up to 1050 ppb gold in soils and 4.5 g/t gold in rocks. A heavy metal concentrate sample returned 20 g/t gold. Associated indicator elements are arsenic, bismuth and tungsten.
Stratigraphic column for the Glenmorangie property

  Age Group Formation Environment Description
YOUNGER Mid Cretaceous     Intrusive I type felsic intrusive plutons.
Late Cambrian to Ordovician   Rabbitkettle - COR Off shelf quiet water Unconformably overlies the Narchilla and Vampire formations. Consists of nodular limestone, silty limestone and siltstone
Early to late Cambrian   Gull Lake - ICG Off shelf quiet water setting Subdivided into 3 units:
  1. Thin basal discontinuous limestone conglomerate.
  2. Orange to rust brown laminated slate and siltstone to very fine grained sandstone.
  3. Upper member of wispy laminated bioturbated calcareous to non calcareous and dolomictic siltstone and mudstone.
Neo-Proterozoic to Cambrian   Vampire - uPCV Transitional Equivalent to the Narchilla, consists of thick bedded siltstone, dark brown-grey weathered fine grained sandstone, phyllite, slates and argillites
Neo-Proterozoic to Cambrian Hyland Group - PCH Narchilla - PCH-3 Off Shelf Facies Several hundred m thick maroon to dark blue, grey, brown, buff and green weathered shale and siltstone, interbedded with fine grained sandstone. 
OLDER Neo Proterozoic Hyland Group - PCH Yusezyu - PCH1 Off Shelf Facies Several km thick medium to coarse grained quartzose sandstone and grit to quartz pebble conglomerate with interbedded shale and siltstone. Uppermost part is variably calcareous with silica cement replaced by carbonate cement. Limestone is a minor constituent (PCH-2) and found at the top of the formation.
 

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