Connaught
(silver-lead-gold)

ConnaughtHighlights

  • 100% owned by ATAC
  • Hosts 7 main silver-gold veins within a 13 km by 5 km area of anomalous geochemical response
  • Located in the Sixtymile placer gold camp, 65 km west of Dawson City and accessible by four-wheel drive vehicle

About

ATAC's 100% owned Connaught prospect hosts seven main silver-gold veins within a 13 km by 5 km area of anomalous geochemical response that approximately coincides with a pronounced magnetic high. Where exposed, the veins are typically 0.3 to 2 m wide and assay 100 to 1,000 g/t silver with 0.3 to 2 g/t gold. Comparison of the geochemical and geophysical signature at Connaught to those at other mineral prospects in the district suggests that the veins lie within the cupola of an intrusion and that they may be underlain by untested stockwork style mineralization. Most of the geochemical anomalies are untested or
partially explored and there is excellent potential for additional discoveries.

Location

Connaught is located in the Sixtymile placer gold camp of western Yukon Territory. The property lies 65 km due west of Dawson City and can be reached by four wheel drive vehicle via the Sixtymile Road, which runs south from the Top of the World Highway. An extensive system of bush roads and trails exist on the property. The Connaught project consists of 250 contiguous mineral claims located in western Yukon at latitude 63°55' north and longitude 140°48' west.

Geology & Mineralization

Geology

The property lies between the Tintina and Denali Faults within a part of Yukon that is mostly underlain by Yukon-Tanana Terrane. That tectonic terrane is composed of continental margin sediments, island arc volcanics and coeval intrusions, which were metamorphosed and deformed during accretion to the North American continent during Mesozoic times. In the Sixtymile district, the Yukon-Tanana Terrane is subdivided into two stratigraphic elements (the Nasina and Klondike Schist Assemblages) and a metaplutonic package (the South Fiftymile Batholith). The Yukon-Tanana units are intruded by undeformed, Late Cretaceous plugs and stocks. The geology in the vicinity of the Connaught project can be divided into two main domains. The southern domain is mostly underlain by the South Fiftymile Batholith while the northern domain contains supracrustal rocks of the Nasina and Klondike Schist Assemblages.

A number of large-scale, northeasterly trending normal faults are present in the region. The Sixtymile River valley bottom may mark the centre of a graben. Eleven major vein structures have been identified in the vicinity of the property. These veins form two sets: one striking east-northeasterly and the other north-northeasterly.

Mineralization

The Connaught project area has mostly been explored as a high-grade silver-lead±gold vein prospect modelled after the highly productive mines in the Keno Hill district, located about 250 km to the east. Prior to 2008, ten main veins were known on claims held by Connaught project. Known vein zones are hosted by dilatent fault structures up to several metres in thickness. Individual veins have been traced for lengths in excess of 260 m and most are open in both directions along strike and to depth. Typical vein exposures consist of multiphase quartz that is variable mineralized with blebby to massive arsenopyrite+galena± chalcopyrite ± covellite ± stibnite±sulphosalts. Massive galena±anglesite lenses are intermittently exposed in the core of some veins. The galena is usually coarsely cubic and contains scattered blebs of chalcopyrite. Anglesite weathered surfaces often exhibit botryoidal textures and some show shear textures. The veins and their selvages are usually light coloured compared to the surrounding units and are often tinted green, because of oxidization of arsenopyrite to scorodite and sericitization of mafic minerals. Bleached phyllic- and argillic-altered halos extend up to six metres into adjacent wallrocks. Gold is present in all of the veins but no systematic work has been done to evaluate its distribution and abundance. Exploration is also needed to look for metal zones within this very large hydrothermal system. The Sixtymile Placer Gold Camp is directly downhill from the veins.

Maps & Figures

Drill, Chip, Channel & Grab Results

Significant Diamond Drill Results - #3 Vein

HOLE FROM
(m)
TO
(m)
INTERVAL
(m)
SILVER
(g/t)
LEAD
(%)
GOLD
(g/t)
CN-07-05 34.05 37.58 3.53 119 2.66 0.23
including 34.05 34.11 0.06 2,130 17.95 3.94
37.51 37.58 0.07 2,120 31.16 1.96
CN-07-06 28.94 30.37 1.43 535 4.78 0.65
including 30.14 30.37 0.23 2,860 21.70 3.55

*True widths are approximately 70% - 100% of the intersected intervals.

Highlights From 2007 Chip Samples - #1 Vein

FROM
(marker)
WIDTH
(m)*
SILVER
(g/t)
LEAD
(%)
GOLD
(g/t)
0 m 0.77 569 19.69 2.61
including 0.16 2,410 75.71 0.07
0.16 57.10 3.31 2.04
0.45 96.60 5.59 3.74
25.0 m 0.30 86.50 11.60 4.93
37.0 m 0.75 798 26.30 2.31
including 0.30 1,685 58.26 0.65
0.45 207 5.00 3.41
45.0 m 0.21 205 18.15 9.71
49.5 m 0.80 605 16.75 10.90
55.0 m 0.22 1,620 47.72 3.37
62.5 m 0.90 1,066 29.67 1.60
including 0.20 2,130 64.72 0.01
0.70 763 25.28 2.03

*All reported intervals are true widths.

Significant 2007 Channel Sample Results - #3 Vein

FROM
(marker)
WIDTH
(m)*
SILVER
(g/t)
LEAD
(%)
GOLD
(g/t)
0.0 m 1.64 1,031 19.96 1.58
including 0.40 2,880 54.89 0.77
1.7 m 1.25 2,450 48.81 0.87
3.4 m 1.60 1,100 23.80 0.78
including 0.75 2,030 44.71 0.73
5.0 m 1.45 864 17.90 1.51
including 0.70 1,100 35.65 1.70

*All reported intervals are true widths.

Select Grab Samples #8 Vein

Length along Vein
(m)
SILVER
(g/t)
LEAD
(%)
0 1965 64.00
25 2500 72.30
112 1632 75.00
130 5498 78.76
143 1901 84.65
275 723 22.30

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