General Information
Secondary Commodities: silver, thallium, gold, arsenic, mercury
Aliases: Anubis Cluster
Deposit Type(s): Carbonate-Hosted Disseminated Au-Ag (Carlin-type)
Location(s): 64.126150 N, -132.583320 W
NTS Mapsheet(s): 106C02
Location Comments: Coordinates supplied by ATAC 2019.
Hand Samples Available at YGS: No
Capsule
Work History
Staked within a large block of “T” claims (various claim numbers, T cl 74 =YD22878) in Mar/2010 by ATAC Resources Ltd. The claims cover open ground that existed between the Dale claims to the north and Sten claims to the south staked in 2009.
In Jun/2010 the company flew an airborne ZTEM geophysical survey over eastern end of the larger Rau Gold Belt, which this occurrence lies within. In 2011 ATAC Resources carried out remote sensing studies over the entire Nadaleen trend and carried out extensive regional silt and soil sampling surveys over the Anubis occurrence area (Minfile Occurrence 106C 099) located approximately 1.4 km southeast. In 2012 the company carried out follow-up silt, soil and rock sampling programs over the Anubis occurrence area, prospected and hand trenched favorable areas.
In 2013 the company extended grid soil sampling to the south and northwest, in an area now known as the “Anubis cluster”. Following the receipt of geochemical results the company prospected, hand pitted, excavator trenched and rock sampled favorable areas which led to the discovery of the Draco showing. The company also tested the Draco showing with numerous excavator pits. In 2014 ATAC Resources dug two excavator trenches each Draco showing.
Geology
The occurrence area is located in east-central Yukon within an area geologists have referred to as the Rackla belt. The Rackla belt straddles the northern edge of the Selwyn basin, where Neoproterozoic to Paleozoic rocks of the basin are juxtaposed against Paleozoic and older slope and basin rocks of the Ogilvie platform along the Dawson thrust zone. Selwyn basin rocks in the occurrence area are dominated by slope and facies carbonate, clastic rocks and siltstone with significant deep water black shale and chert, whereas the Ogilvie platform is dominated by shallow water platformal carbonate.
Based on geological mapping by Colpron et al. and geologists employed by ATAC Resources the occurrence area is underlain by a sequence of off-shelf carbonate and shale rocks of Middle Devonian (Eifelian) to Upper Devonian – Lower Mississippian age that are cut by a series of regional faults. The Draco showing (occurrence location) is underlain by Middle Devonian limestone which is separated by a high angle fault which ATAC Resources has named the Anubis fault, from overlying Upper Devonian to Mississippian argillite.
The Draco showing is located south of the Anubis fault and within a moderate silver, mercury and thallium soil geochemical anomaly. Excavator pits were dug along two roughly parallel north-northeast orientated lines orientated perpendicular to the Anubis fault. These pits intersected variably dolomitized limestone, moderately clay altered and containing thin horizons of arsenic-antimony-iron oxide. Rock samples collected from the bottom of one pit returned gold values ranging from 1.04 to 1.57 g/t gold. A second series of pits dug approximately 350 m to the northeast to test a gold soil anomaly did not return significant gold mineralization. Additional trenching conducted in 2014 did not return any significant gold values but did return elevated values for pathfinder elements.
Staked within a large block of “T” claims (various claim numbers, T cl 74 =YD22878) in Mar/2010 by ATAC Resources Ltd. The claims cover open ground that existed between the Dale claims to the north and Sten claims to the south staked in 2009.
In Jun/2010 the company flew an airborne ZTEM geophysical survey over eastern end of the larger Rau Gold Belt, which this occurrence lies within. In 2011 ATAC Resources carried out remote sensing studies over the entire Nadaleen trend and carried out extensive regional silt and soil sampling surveys over the Anubis occurrence area (Minfile Occurrence 106C 099) located approximately 1.4 km southeast. In 2012 the company carried out follow-up silt, soil and rock sampling programs over the Anubis occurrence area, prospected and hand trenched favorable areas.
In 2013 the company extended grid soil sampling to the south and northwest, in an area now known as the “Anubis cluster”. Following the receipt of geochemical results the company prospected, hand pitted, excavator trenched and rock sampled favorable areas which led to the discovery of the Draco showing. The company also tested the Draco showing with numerous excavator pits. In 2014 ATAC Resources dug two excavator trenches each Draco showing.
Geology
The occurrence area is located in east-central Yukon within an area geologists have referred to as the Rackla belt. The Rackla belt straddles the northern edge of the Selwyn basin, where Neoproterozoic to Paleozoic rocks of the basin are juxtaposed against Paleozoic and older slope and basin rocks of the Ogilvie platform along the Dawson thrust zone. Selwyn basin rocks in the occurrence area are dominated by slope and facies carbonate, clastic rocks and siltstone with significant deep water black shale and chert, whereas the Ogilvie platform is dominated by shallow water platformal carbonate.
Based on geological mapping by Colpron et al. and geologists employed by ATAC Resources the occurrence area is underlain by a sequence of off-shelf carbonate and shale rocks of Middle Devonian (Eifelian) to Upper Devonian – Lower Mississippian age that are cut by a series of regional faults. The Draco showing (occurrence location) is underlain by Middle Devonian limestone which is separated by a high angle fault which ATAC Resources has named the Anubis fault, from overlying Upper Devonian to Mississippian argillite.
The Draco showing is located south of the Anubis fault and within a moderate silver, mercury and thallium soil geochemical anomaly. Excavator pits were dug along two roughly parallel north-northeast orientated lines orientated perpendicular to the Anubis fault. These pits intersected variably dolomitized limestone, moderately clay altered and containing thin horizons of arsenic-antimony-iron oxide. Rock samples collected from the bottom of one pit returned gold values ranging from 1.04 to 1.57 g/t gold. A second series of pits dug approximately 350 m to the northeast to test a gold soil anomaly did not return significant gold mineralization. Additional trenching conducted in 2014 did not return any significant gold values but did return elevated values for pathfinder elements.
Location Map
Last Updated: Feb 26, 2020
Work History
Year | Work Type | Comment |
---|---|---|
2014 | Trenching: Backhoe | Two trench each dug on Columba and Draco showings. |
2013 | Geochemistry: Rock | Sampled mineralized areas discovered while prospecting soil anomalies. |
2013 | Geochemistry: Silt | Detailed sampling. |
2013 | Geochemistry: Soil | Grid soil sampling over occurrence area. |
2013 | Trenching: Backhoe | Also dug hand pits. |
2012 | Geochemistry: Silt | Reconnaissance scale |
2012 | Geochemistry: Soil | Reconnaissance scale. |
2011 | Remote Sensing | Conducted over entire Nadaleen Trend. |
2010 | Airborne Geophysics: ZTEM | Flown over entire Nadaleen Trend. |
Regional Geology - Terrane
Group: Ancestral North America
Affinity: W Laurentia
Name: North America - basinal strata
Realm: Laurentia
Regional Geology - Bedrock
Supergroup:
Group/Suite:
Formation: Grizzly Bear?
Member:
Terrane: Laurentia
Period Max: Devonian
Age Max: 407 MA
Period Min: Devonian
Age Min: 388 MA
Rock Major: limestone
Rock Minor:
Reference: Colpron et al. (2013) - YGS OF 2013-13
Geological Unit (1M): DB
Geological Unit (250K): DB
Assessment Reports that overlap occurrence
Report Number | Year | Title | Worktypes | Holes Drilled | Meters Drilled |
---|---|---|---|---|---|
096810 | 2014 | Assessment Report Describing Geochemical Sampling, Excavator Trenching, Geological Mapping, Auger and Diamond Drilling Along the Nadaleen Trend of the Rackla Gold Property | Auger - Drilling, Diamond - Drilling, Rock - Geochemistry, Backhoe - Trenching | 59 | 4733 |
096607 | 2012 | Assessment Report Describing Metallurgical Testing, Wildlife Monitoring, Heritage Evaluation, and Water Quality and Climate Monitoring Surveys | Water - Geochemistry, Metallurgical Tests - Lab Work/Physical Studies, Environmental Assessment/Impact - Studies, Heritage/Archeological - Studies | ||
096597 | 2012 | Assessment Report Describing Geochemical Sampling, Auger Sampling, Geological Mapping, Diamond Drilling, and Geophysical Surveys | Air Strip - Development, Surface, Auger - Drilling, Diamond - Drilling, Rock - Geochemistry, Silt - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology, EM - Ground Geophysics, Gravity Survey - Ground Geophysics, Magnetics - Ground Geophysics, Prospecting - Other, Hand - Trenching | 172 | 37340.37 |
095938 | 2011 | Assessment Report Describing Geochemical Sampling, Geological Mapping and Remote Sensing Surveys at the Rackla Gold Property | Rock - Geochemistry, Silt - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology, LIDAR - Remote Sensing, Heritage/Archeological - Studies | ||
095712 | 2010 | Assessment Report Describing Geochemical Sampling, Geological Mapping, Diamond Drilling and Geophysical Surveys at the Nadaleen Trend Property | ZTEM - Airborne Geophysics, Diamond - Drilling, Drill Core - Geochemistry, Rock - Geochemistry, Soil - Geochemistry, Detailed Bedrock Mapping - Geology, Regional Bedrock Mapping - Geology, Prospecting - Other | 9 | 1898.28 |
095680 | 2009 | Assessment Report Describing Geochemical Sampling | Soil - Geochemistry, Prospecting - Other |
Related References
Number | Title | Page(s) | Document Type |
---|---|---|---|
YEG2013_11 | Bedrock Geology of NTS 106B/04, Eastern Rackla Belt | p.147-167. | Annual Report Paper |
2013-13 | Geological map of the Rackla belt, east-central Yukon (NTS 106C/1-4, 106D/1) | Open File (Geological - Bedrock) | |
YEG2012_OV | Yukon Exploration and Geology Overview 2012 | p. 33-34, 62,65. | Annual Report |
2014-1 | Geological map of NTS 106B/04, east-central Yukon | Open File (Geological - Bedrock) | |
YEG2013_OV | Yukon Exploration and Geology Overview 2013 | p. 26-27, 42, 47. | Annual Report |
YEG2014_OV | Yukon Exploration and Geology Overview 2014 | p. 23-24, 40, 42. | Annual Report |
YEG2015_OV2 | Yukon Hard Rock Mining, Development and Exploration Overview 2015 | p. 28, 43, 46. | Annual Report Paper |
Citations |
---|
ATAC RESOURCES LTD, Aug/2014. Assessment Report # 096725 by J. Lane and R. Phillips. |
ATAC RESOURCES LTD, Mar/2016. Web Site: www.atacresources.com. |
ATAC RESOURCES LTD, New Release. 8 Mar/2010, 29 Jul/2010, 20 Oct/2010, 28 Oct/2010, 31 May/2011, 13 Dec/2011, 1 Mar/2012, 15 May/2012, 21 Aug/2012, 17 Sep/2012, 24 Oct/2012, 21 Nov/2012, 23 Jan/2013, 9 Apr/2013, 17 Jun/2013, 12 Nov/2013, 12 Jan/2014, 15 Apr/2014, 16 Jun/2014, 26 Aug/2014, 28 Oct/2014, 24 Mar/2015, 22 Jun/2015, 25 Aug/2015, 10 Feb/16. |
BLUSSON, S.L. Five Geological maps of northern Selwyn Basin )Operation Stewart), Yukon Territory and District of Mackenzie, N.W.T. Geological Survey of Canada, Open File 205, 1974. 105N, 105O, 106A, 106B, 106C, scale 1:250 000. |
HORNBROOK, E.H.W., AND FRISKE, P.W. B., 1990. Regional stream sediment and water geochemical data, East Central Yukon (106D, parts of 106c, 106E and 106F). Geological Survey of Canada Open File 2175. |