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Occurrence Details


Occurrence Number
106B 025
Occurrence Name
Aphrodite
Occurrence Type
Hard-rock
Status
Showing


General Information

Secondary Commodities: arsenic, mercury, antimony, thallium, gold
Aliases: Nad Claims
Deposit Type(s): Carbonate-Hosted Disseminated Au-Ag (Carlin-type)
Location(s): 64.0011 N, -131.9498 W
NTS Mapsheet(s): 106B04
Location Comments: Location marks approximate center of Aphrodite zone.
Hand Samples Available at YGS: No

Capsule

WORK HISTORY

Staked as Nad cl 1-76 (YD113331) in Oct/2010 by Strategic Metals Ltd which incorporated the claim block into their larger Midas Touch project. The company carried out a preliminary round of ridge and spur soil sampling and reconnaissance silt sampling. Later in the summer the company carried out rock sampling, grid soil sampling and reconnaissance geological mapping on the west side of the claim block.
 
In 2012 Strategic Metals collected further rock samples, grid soil sampled the central portion of the property and carried out detailed geological mapping on the west side of the claim block. The following year the company carried out ridge and spur soil sampling over the north, east and south portions of the property which had not been previously sampled. The company also dug a 10 m long trench on the Aphrodite zone and collected chip samples over its length. A single soil sample was collected from the bottom of the trench.

GEOLOGY
 
The Nad property lies approximately 200 km east-northeast of the town of Mayo and approximately 6 km southeast of the Stewart River in east-central Yukon. Access to the property in 2011- 2013 involved a fixed-wing aircraft to a landing strip at ATAC Resources’ Stewart airstrip, located approximately 16 km to the west and then employing a helicopter to the property.
 
The area was geologically mapped in the early 1970’s by S Blusson of the Geological Survey of Canada (1974 – 1:250 000 scale) as part of Operation Stewart. Blusson’s maps were used by most geologists and exploration companies until 2010 when the Yukon Geological Survey initiated a project to better understand the geology of the area following the discovery of Carlin-type gold mineralization on ATAC Resources’ Rackla Gold Project located to the north. M. Colpron et al. of the Yukon Geological Survey geologically mapped topographic map sheet 106C 01 (Mount Stenbraten – 1:50 000 scale) in the summer of 2012 and a geological map was released in 2013. D. Moynihan, also employed by the Yukon Geological Survey, geologically mapped topographic map sheet 106B 04 (1:50 000 scale) in 2013 employing the same nomenclature used to the west. The map was released in 2014. 

A 2001 Geological Survey of Canada silt sample collected from the main creek draining west of the property returned anomalous results for arsenic (110 ppm), mercury (13.9 ppm) and antimony (0.63 ppm) which are considered pathfinder elements for Carlin-type gold deposits.  Combined with similarities in stratigraphic units and structural features seen at ATAC Resources Ltd.’s Rackla Gold Belt (Carlin-type gold mineralization) located to the north led Strategic Metals to stake the Nad claims.
 
The property is located approximately 400 m east of Anthill Resources Ltd.’s Venus zone where gold mineralization was recently discovered. Both properties are located within a wedge-shaped panel of Neoproterozoic (Ediacaran) to Lower Cambrian Algae and Narchilla formations which lie in an anomalous structural position (Moynihan, 2013). Geological mapping carried out by Strategic Metals’ geologists generally agrees with Moynihan except the company mapped older Yusezyu formation rocks including a mixed mudstone and limestone layer instead of Moynihan’s interpreted Narchilla formation. Strategic Metals may ultimately be proved right as recent mapping by Moynihan to the south in the Hyland River area has identified several never seen before carbonate layers within Yusezyu formation sequences (Moynihan 2015, 2016). Strategic Metals also mapped Gull Lake formation rocks to the north while Moynihan has mapped younger Old Cabin formation rocks followed by Gull Lake formation rocks further north.
 
Preliminary soil sampling conducted in 2011 identified Carlin-type pathfinder geochemical anomalies on the western part of the claim block. The anomalies returned strongly to very strongly anomalous values for arsenic (up to 2 990 ppm) and mercury (up to 112 ppm); moderately to strongly anomalous values for thallium (up to 6.64 ppm) and weakly to moderately anomalous antimony values Gold values were relatively low with a peak value of  9 ppb. The most anomalous area of the property is located in the western part of the claim belt. Silt sampling gave similar but lower values for arsenic and antimony and background levels for gold, mercury and thallium. 

Follow-up soil and silt sampling carried out in 2012 and 13 outlined 4 soil anomalies (A, B, C, and D) located in the western and central portions of the property. Anomaly A, the largest anomaly located on the property, measures approximately 1 900 m long and up to 800 m wide. The anomaly covers the prospective limestone and dolostone horizons which host all known surface mineralization including the Aphrodite zone. The western half of the anomaly hosts very strongly anomalous arsenic values with variably elevated gold, thallium, mercury and antimony values. The eastern half of the anomaly is primarily defined by weak to moderate arsenic signature with intermittent strongly elevated arsenic values. Arsenic is accompanied by rare, sporadic, weakly elevated mercury and antimony values.
 
Anomaly B is located 900 m east of Anomaly A and measures 350 m by 200 m in size. It hosts predominantly weak to moderate antimony and arsenic values several weakly anomalous gold values. The anomaly may represent the along strike extent of the prospective horizon hosting Anomaly A, but the underlying areas is covered by colluvium, glacial till and or vegetation. Anomalies C and D lie south of Anomaly A and cover areas hosting non prospective geological units.
 
All rock samples collected in 2011 were taken in the western part of the property and returned weakly to moderately anomalous values for gold (0.14 g/t), and strongly to very strongly anomalous values for Carlin-type pathfinder elements including; arsenic (up to 38.8 %), thallium (up to 127 ppm), mercury (>/= 10 000 ppm) and antimony (up to 618 ppm) The best values were collected from samples of decalcified limestone, volcaniclastic and quartz grit/pebble conglomerate units.
 
Strategic Metals concentrated their exploration efforts on the Aphrodite zone, an 800 by 500 m area that lies within the same favorable stratigraphy as Anthill Resources Ltd.’s Venus discovery located 400 m to the west. The zone is bisected by a west-northwesterly orientated thrust fault whose footwall rocks are mostly Old Cabin formation volcaniclastics, containing maroon shale (Gull Lake formation?) breccia fragments and a narrow band of “zebra” dolostone (Algae formation?). The hanging wall side of the fault hosts a thick interbedded sequence comprised of turbiditic clastic and carbonate rocks (Algae and Narchilla formations?) that are known to be prospective for Carlin-type mineralization. In the eastern part of the Aphrodite zone the favorable hanging wall stratigraphy is obliquely truncated by the thrust fault. 

In 2013 Strategic Metals collected 34 rock samples, many displaying realgar and orpiment mineralization from the Aphrodite zone, with the majority being collected from the lower 100 m of the prospective sequence in the hanging wall of the thrust fault. However the upper 100 m of that sequence is very rugged and little prospecting was performed in that area. The lower zone returned values up to 39.7 % arsenic, 0.42 g/t gold, 126.5 ppm thallium, greater than 10 000 ppm mercury and 200 ppm antimony.
 
Strategic Metals summed up their exploration efforts by noting that exploration to date has outlined encouraging pathfinder and gold-in-rock values (up to 0.42 g/t) within a relatively thick, carbonate-rich sequence that is variably altered and hosts realgar and orpiment mineralization. Soil anomalies failed to delineate economic grade mineralization. This is not surprising based on extensive overburden and vegetation cover that blankets much of the prospective area.
 
Although Strategic Metals had planned to drill the property in 2012, no diamond drilling has yet taken place. 
 

Location Map

Last Updated: Oct 6, 2017

Work History

Year Work Type Comment
2013 Geochemistry Chip sampled trench, collected 1 soil sample from bottom of trench.
2013 Geochemistry: Soil Ridge and spur sampling on north, south and east portions of property not previously sampled.
2013 Trenching: Hand Dug 10 m long trench on Aphrodite zone.
2012 Geochemistry: Rock Further sampling.
2012 Geochemistry: Soil Grid sampled center of property.
2012 Geology: Detailed Bedrock Mapping Mapped western side of claim block.
2011 Geochemistry: Rock Sampled various showings.
2011 Geochemistry: Silt Reconnaissance survey.
2011 Geochemistry: Soil preliminary ridge and spur sampling followed by grid based sampling on Western part of claim block.
2011 Geology: Regional Bedrock Mapping
2001 Geochemistry: Silt Geological Survey of Canada stream sediment survey undertaken.

Regional Geology - Terrane

Group: Ancestral North America
Affinity: W Laurentia
Name: North America - basinal strata
Realm: Laurentia


Regional Geology - Bedrock

Supergroup: Windermere
Group/Suite: Hyland
Formation: Algae
Member:
Terrane: Laurentia
Period Max: Ediacaran
Age Max: 635 MA
Period Min: Ediacaran
Age Min: 543 MA
Rock Major: limestone, dolostone,
Rock Minor: diamictite, shale, calcareous siltstone/sandstone
Reference: Moynihan (2014) - YGS OF 2014-1
Geological Unit (1M): PCH
Geological Unit (250K): PCH7

Assessment Reports that overlap occurrence

Report Number Year Title Worktypes Holes Drilled Meters Drilled
096618 2013 Assessment Report Describing Geochemical Sampling, Prospecting, Hand Trenching and Geological Mapping Rock - Geochemistry, Soil - Geochemistry, Detailed Bedrock Mapping - Geology, Prospecting - Other, Hand - Trenching
096657 2013 Assessment Report for the 2013 Exploration Program of Silt, Soil and Rock Chip Geochemical Surveys, Geological Mapping and Diamond Drilling Diamond - Drilling, Drill Core - Geochemistry, Rock - Geochemistry, Silt - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology 21 4803
096462 2012 Assessment Report Describing Geochemical Sampling and Geological Mapping at the Nad Property Rock - Geochemistry, Soil - Geochemistry, Detailed Bedrock Mapping - Geology
096584 2012 Assessment Report on 2012 Program of Geological Mapping, Soil and Silt Geochemical Surveys and Diamond Drilling on the Einarson Project, Anthill Resources Yukon Ltd. Diamond - Drilling, Silt - Geochemistry, Soil - Geochemistry, Regional Bedrock Mapping - Geology 10 1875
095919 2011 Assessment Report Describing Geochemical Sampling and Geological Mapping at the NAD Property Rock - Geochemistry, Silt - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology
095778 2011 Stream Sediment and Moss Mat Geochemical Survey on the Einarson Property Plant - Geochemistry, Silt - Geochemistry
093827 1997 1997 Geological Assessment Report on Emerald Lake Claims Rock - Geochemistry, Silt - Geochemistry, Soil - Geochemistry

Related References

Number Title Page(s) Document Type
YEG2013_OV Yukon Exploration and Geology Overview 2013 p. 28, 42. Annual Report
YEG2013_11 Bedrock Geology of NTS 106B/04, Eastern Rackla Belt p. 147-167. Annual Report Paper
YEG2015_12 Stratigraphy and structural geology of the upper Hyland River area (parts of 105H/8, 105H/9), southeast Yukon p. 187 - 206. Annual Report Paper
2014-1 Geological map of NTS 106B/04, east-central Yukon Open File (Geological - Bedrock)
YEG2016_9 Progress report on geological mapping in the upper Hyland River region of southeastern Yukon (parts of NTS 105H/08,09,10,15,16 and 105I/02) p. 163-180. Annual Report Paper
Citations
STRATEGIC METALS LTD, Apr/2012. Assessment Report #095919 by A. Mitchell.
STRATEGIC METALS LTD, Feb/2017. Web Site: www.strategicmetalsltd.com.
STRATEGIC METALS LTD, Jun/2013. Assessment Report #096462 by S. Drechsler.
STRATEGIC METALS LTD, Mar/2014. Assessment Report #096618 by A. Mitchell.
STRATEGIC METALS LTD, Press Release. 31 May/2012, 20 Jun/2013.

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