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Occurrence Details


Occurrence Number
115P 061
Occurrence Name
Big
Occurrence Type
Hard-rock
Status
Showing


General Information

Secondary Commodities: arsenic, bismuth, gold, lead, manganese, silver, tungsten
Deposit Type(s): Plutonic Related Au
Location(s): 63.85 N, -136.969720 W
NTS Mapsheet(s): 115P15
Location Comments: .5 Kilometres
Hand Samples Available at YGS: No

Capsule

Work History

Discovered by Murphy and Heon during 1:50 000 scale geological mapping in 1993. The showing was staked within block of Far cl 1-70 (YB42003) by R. Wondga in 1994, who performed minor geological mapping and sampling on claims 65-70 in June/94. 
L. Hart restaked the showing within Far cl 1-64 (YB42003) in Dec/94. Wonga transferred Far cl 65-70 (YB29811) to Hart in Jan/95. 
Sometime in 1994 Thor Explorations Ltd optioned/purchased the Far and other neighboring claims from Hart. In Sep/2003 Thor Explorations Ltd carried out soil sampling and prospecting on Far cl 31-34 , cl 51-54 and other neighboring claims. In 2005 Thor Explorations Ltd carried out a reconnaissance exploration program on the Far and other neighboring claims.

Capsule Geology

The area is underlain by the Big Creek stock, a Mid-Cretaceous diorite body which intrudes metasediments assigned to the Yusezyu Formation of the Upper Proterozoic to Cambrian Hyland Group. Mineralized samples collected by Murphy and Heon assayed 377 ppb gold and 478 ppm manganese (vein), 435 ppb gold, 72 ppm bismuth, 88 ppm arsenic, 15.3 ppm silver, 242 ppm lead and 303 ppm tungsten (vein, disseminated); and 20 ppb gold and 789 ppm arsenic (breccia). 
Wondga and Thor Explorations focused most of their work towards the west end of the Far claims near Minfile #Occurrence 115P 012 which covers the east-central portion of the Rhosgobel Stock. Soil sampling in 2003 on Far cl 31-34 and 51-54 identified a 100 m long gold soil anomaly within Far cl 33 and 34 which covers the southeast corner of the Rhosgobel Stock. The anomaly ranges in value from 0.067 to 0.194 g/t gold and was associated with anomalous arsenic and tungsten values averaging 420 ppm and 125 ppm respectively. The 2005 reconnaissance program covered the entire Far claim block and other company owned claims. Numerous single site rock and soil anomalies were identified but given the reconnaissance nature of the program no new areas of mineralization or potential mineralization were identified. Although Thor Explorations held the Far claims for over ten years it appears the claims never received a detailed geological examination, thus the claims economic potential has never been fully explored.

References

MURPHY, D.C., AND HÈON, D., 1994a. Geological Map of Sprague Creek Map Area (NTS 115P/15), western Selwyn Basin, Yukon. Exploration and Geological Services Division, Yukon, Indian and Northern Affairs Canada, Open File 1994-3(G). 

MURPHY, D.C., AND HÈON, D., 1994b. Geology and Mineral Occurrences of Sprague Creek Map Area (NTS 115P/15), western Selwyn Basin, Yukon. In: Yukon Exploration and Geology 1993, Exploration and Geological Services Division, Yukon, Indian and Northern Affairs Canada, p. 29-46. 

MURPHY, D.C., 1997. Geology of the McQuesten River region, northern McQuesten and Mayo map area, Yukon Territory (115P/14, 15, 16; 105M/13, 14). Exploration and Geological Services Division, Yukon, Indian and Northern Affairs Canada, Bulletin 6, 122 p. 


THOR EXPLORATIONS LTD, Mar/95. Assessment Report #093311 by B.A. Lueck 

THOR EXPLORATIONS LTD, Mar/95. Assessment Report #093271 by B.A. Lueck. 

THOR EXPLORATIONS LTD, Mar/95. Assessment Report #093310 by B.A. Lueck. 

THOR EXPLORATIONS LTD, Jul/2004. Assessment Report #094456 by C. Schulze. 

THOR EXPLORATIONS LTD, Sep/2006. Assessment Report #0944602 by C. Schulze.

 

Location Map

Last Updated: Jul 5, 2022

Work History

Year Work Type Comment
2020 Drilling: Diamond 1 hole, 173 m
2020 Geochemistry: Drill Core
2020 Remote Sensing: LIDAR
2019 Geochemistry: Rock
2019 Geochemistry: Soil
2019 Ground Geophysics: IP
2019 Other: Prospecting
2011 Geochemistry: Rock
2011 Geochemistry: Silt
2011 Geochemistry: Soil
2005 Geology: Bedrock Mapping Reconnaissance scale over entire Far claim block.
2005 Other Reconnaissance scale over entire Far claim block.
2005 Geochemistry: Rock
2005 Geochemistry: Silt
2005 Geochemistry: Soil
2005 Geology: Bedrock Mapping
2003 Geochemistry: Soil Carried out on Far claims 31-34 and 51-54 and other neighboring claims.
1998 Airborne Geophysics: Gamma-Ray Spectrometry
1998 Airborne Geophysics: Magnetic
1998 Geochemistry: Rock
1998 Geochemistry: Soil
1998 Geology: Bedrock Mapping
1998 Other: Line Cutting
1994 Geology: Bedrock Mapping Wondga performed minor geological mapping on Far 65-70 cl
1994 Other Wondga performed minor sampling on Far 65-70 cl
1994 Geochemistry: Rock
1994 Geochemistry: Silt
1994 Geochemistry: Soil
1994 Other: Line Cutting
1981 Geochemistry: Rock
1981 Geochemistry: Silt
1981 Geochemistry: Soil
1981 Geology: Bedrock Mapping
1981 Other: Line Cutting
1981 Other: Prospecting

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: Yusezyu
Member:
Terrane: Laurentia
Period Max: Ediacaran
Age Max: 635 MA
Period Min: Ediacaran
Age Min: 542 MA
Rock Major: phyllite/shale/sandstone/grit/conglomerate/limestone
Rock Minor: marble
Reference: Green & Roddick (1972) - GSC Map 1283A
Geological Unit (1M): PCH
Geological Unit (250K): PCH6

Assessment Reports that overlap occurrence

Report Number Year Title Worktypes Holes Drilled Meters Drilled
096012 2011 2011 Geochemical Program on the Josephine Property Rock - Geochemistry, Rock - Geochemistry, Silt - Geochemistry, Silt - Geochemistry, Soil - Geochemistry, Soil - Geochemistry
094602 2005 Progress Report: Geological Mapping and Soil Geochemical Sampling Year 2005 Results on the Clear Creek Project; Thor Explorations Ltd. Rock - Geochemistry, Silt - Geochemistry, Soil - Geochemistry, Detailed Bedrock Mapping - Geology, Prospecting - Other
094654 2005 Geological and Geochemical Assessment Report: Progress Report and Year-2005 Results on the Clear Creek Project; Thor Explorations Ltd. Rock - Geochemistry, Silt - Geochemistry, Soil - Geochemistry, Regional Bedrock Mapping - Geology
093937 1998 Geophysical, Geological and Geochemical Assessment Report on the Clear Creek Property Gamma-Ray Spectrometry - Airborne Geophysics, Magnetic - Airborne Geophysics, Rock - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology, Line Cutting - Other
093270 1994 Geological and Geochemical Assessment Report for the T P 2, 4-8, FP 1-12 Claims and J D A, 1-91, EFP 1-76 Claims Rock - Geochemistry, Silt - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology, Line Cutting - Other
090926 1981 Geological and Geochemical Assessment Report on the C.C. 1-860 (Fractions included), SLUGGO 1-20, Rain 1-30 and BEE 1-14 Claim Groups Muck - Geochemistry, Rock - Geochemistry, Silt - Geochemistry, Soil - Geochemistry, Detailed Bedrock Mapping - Geology, Regional Bedrock Mapping - Geology, Line Cutting - Other, Prospecting - Other

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