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Occurrence Details


Occurrence Number
115N 163
Occurrence Name
Tr5
Occurrence Type
Hard-rock
Status
Showing


General Information

Secondary Commodities: gold
Deposit Type(s): Skarn Au
Location(s): 63.452780 N, -140.031110 W
NTS Mapsheet(s): 115N08
Location Comments: .5 Kilometres
Hand Samples Available at YGS: No

Capsule

Work History

Staked as Flume cl 92-153 (YC12443) in Sep/98 by Phelps Dodge Corporation of Canada Ltd, which carried out reconnaissance geochemical sampling at that time. Phelps Dodge carried out grid geochemical soil sampling, prospecting and geological mapping in 1999 and additional geochemical sampling and trenching in 2000.

Capsule Geology

The area is underlain by Devonian, Mississippian and possibly older (?), quartzite orthogneiss and thickly layered marble of the Yukon Tanana Terrane which have been intruded to the north and east by a mid-Cretaceous aged biotite-quartz monzonite stock and later quartz feldspar porphyry dykes.
An extensive area of high Au (to 1 317 ppb) and As (to 2 490 ppm) concentrations in soil was identified by Phelps Dodge in 1999. Sampling was concentrated on two separate grids, known as Grid A (Minfile Occurrence #115N 10) and Grid B (this occurrence) and the strongest anomalies were followed up by trenching.
Trenching of the main anomaly on Grid B to test for a bedrock source of sphalerite and galena-bearing boulders previously located, exposed gold, arsenic, lead and zinc mineralization associated with skarn alteration in marble that is interbedded with quartz-mica schists. Three or four poorly defined silicified felsic intrusive dykes, 10 cm to 1 m wide, were also exposed in the thrench (TR5).
The trench was sampled on two and three metre intervals over 41 m and two consecutive chip samples across skarn and dyke returned 1 199 ppb Au with 261 ppm As over 6 m, high levels of Pb, Zn and Ag were also returned from these samples.

References

PHELPS DODGE CORPORATION OF CANADA LTD, May/99. Assessment Report #093991 by G. Kulla.

PHELPS DODGE CORPORATION OF CANADA LTD, Mar/2000. Assessment Report #094090 by S.W. Wetherup and R.C. Cameron.

PHELPS DODGE CORPORATION OF CANADA LTD, Mar/2001. Assessment Report #094202 by G. Kulla.

TEMPELMAN-KLUIT, D.J., 1974. Reconaissance geology of Aishihik Lake, Snag and part of Stewart River map-areas, west-central Yukon. Department of Energy Mines and Resources; Geological Survey of Canada Paper 73-41, 97 p.

YUKON EXPLORATION AND GEOLOGY 1999, p. 16; 2000, p. 19.

Location Map

Last Updated: Sep 15, 2011

Work History

Year Work Type Comment
2000 Other
2000 Trenching
1999 Geochemistry: Soil
1999 Geology: Bedrock Mapping
1999 Other
1998 Other

Regional Geology - Terrane

Group: Intermontane
Affinity: W Laurentia
Name: Yukon-Tanana
Realm: peri-Laurentian


Regional Geology - Bedrock

Supergroup:
Group/Suite: Simpson Range
Formation:
Member:
Terrane: Yukon-Tanana
Period Max: Carboniferous
Age Max: 355 MA
Period Min: Carboniferous
Age Min: 345 MA
Rock Major: tonalite/interm. to mafic orthogneiss
Rock Minor:
Reference: Gordey & Ryan (2005) - GSC OF 4970
Geological Unit (1M): MSR
Geological Unit (250K): MgSR

Assessment Reports that overlap occurrence

Report Number Year Title Worktypes Holes Drilled Meters Drilled
096023 2011 Flume Property Assessment Report 2011 Soil - Geochemistry, Soil - Geochemistry
095536 2010 Geophysical Report on the Line 1-60 and Line 61-100 Claims Magnetic - Airborne Geophysics
094447 2003 2003 Geological and Geochemical Report on the Flume-Ten Property, Yukon Territory Rock - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology, Prospecting - Other
094202 2000 Geological and Geochemical Report on the Flume Group of Mineral Claims Rock - Geochemistry, Silt - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology, Prospecting - Other, Backhoe - Trenching, Hand - Trenching
094071 1999 Geological and Geochemical Report on the Ten Mile Creek-Intrusion Related Gold Target-West Central Yukon Territory Rock - Geochemistry, Silt - Geochemistry, Soil - Geochemistry, Petrographic - Lab Work/Physical Studies
094090 1999 Geological and Geochemical Report on the Flume Group of Mineral Claims Rock - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology, Prospecting - Other
093991 1998 Geochemical Report on the Flume Group of Mineral Claims Rock - Geochemistry, Silt - Geochemistry, Soil - Geochemistry, Prospecting - Other

Related References

Number Title Page(s) Document Type
ARMC012784 Geology map of 115-N-8 - Stewart River area Geoscience Map (Geological - Bedrock)
ARMC012791 Air photo and traverse overlay maps with notes - Ladue Creek area and Dawson Creek area. Geoscience Map (General)
ARMC016534 Geochemical map -115O/5 - Excelsior Creek Geochemical Map
ARMC012788 Map of Ladue Creek area with geochem. notations - Aeromagnetic series - Map 4280G - 115-N-8 Geoscience Map (Geological - Bedrock)
ARMC012785 Map of Ladue Creek area with geochemical results plotted - Aeromagnetic series map 4280G - 115-N-8 Geochemical Map
ARMC012786 Map of Ladue Creek area with geochemical results plotted - Aeromagnetic series map 4280G - 115-N-8 Geochemical Map
ARMC012789 Map of Ladue Creek area with geology notations - Aeromagnetic series - Map 4280G - 115-N-8 Geoscience Map (Geological - Bedrock)
ARMC012787 Map of Ladue Creek area with geology notations and legend - Aeromagnetic series map 4280G - 115-N-8 Geoscience Map (Geological - Bedrock)
ARMC012790 Map of Ladue Creek area with notations (waterways)- Aeromagnetic series map 4280G - 115-N-8 Geophysical Map
ARMC012796 Map 115-N-8 of Dawson Creek area with geochemical locations - Aeromagnetic series map 4280G Geophysical Map
ARMC012795 Map 115-N-8 of Dawson Creek area with geochemical results plotted - Aeromagnetic series map 4280G Geophysical Map
Citations

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