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Occurrence Details

Occurrence Number
115I 121
Occurrence Name
Occurrence Type

General Information

Secondary Commodities: antimony, copper, zinc, lead, silver, gold
Aliases: Seymour, Freegold
Deposit Type(s): Porphyry Cu-Mo-Au
Location(s): 62.298930 N, -137.1821 W
NTS Mapsheet(s): 115I06
Location Comments: Coordinates provided by Triumph Gold in 2020.
Hand Samples Available at YGS: No


Work History

This area was originally explored by individual prospectors for gold veins in the 1930s. The first recorded staking of the area was by R. McKamey, who staked Low cl 9-49 (Y40124) in November 1969. The claims were optioned to Samson Mines Ltd. and Monarch Metal Mines Ltd. who carried out geochemical sampling before allowing the claims to lapse.

Re-staked as Ag cl 1-36 and Au cl 1-40 (Y75866) in July 1973 by E.D. Campbell and G.E. Smith who later optioned them to Prism Resources Ltd. and Dynasty Exploration Ltd. Prism and Dynasty carried out grid geochemical sampling, magnetometer surveying and bulldozer trenching in 1974 and IP surveying in 1975. The claims subsequently lapsed in 1980.

Re-staked as the Seymour cl 1-44 (YA60053) in May 1981 by Arctic Red Resources Ltd., which carried out geochemical sampling. Re-staked as Ken cl 1-16 (YA82495) in June 1984 by G. Harris. Chevron Minerals Ltd surrounded Harris’ claims with EYM cl 1-46 (YA86872) in June 1985 and carried out geochemical sampling and geological mapping in 1985 and 1986. R.A. Granger partially re-staked the Ken claims as Nek cl 1-4 (YA95968) in August 1986.

In 1987, Chevron optioned its claims to Big Creek Joint Venture (Big Creek Resources Ltd. and Rexford Minerals Ltd.), which carried out road work in 1987 and 1988. Big Creek Resources Ltd. purchased the EYM claims in the spring of 1990, and trenched later in the year. Rinsey Mines Ltd. optioned Big Creek's claims in February 1991 and carried out trenching that year. B. and G. Harris re-staked the Nek claims as Daze cl 1-6 and Happy cl 9-10 (YB36050) in July 1991 and G. Harris and Maingold Exploration Ltd. carried out prospecting and trenching in 1992. Harris and Associates conducted blast trenching and soil and rock geochemical sampling in 1993.

In April 1994, G. Harris re-staked the majority of the EYM claims as Glen cl 1-40 (YB46680) and carried out prospecting, trenching and geochemical soil sampling on the Glen claims. During August 1994 the Geological Survey of Canada under the Canada-Yukon Mineral Development Agreement carried out a multi-parameter airborne geophysical survey of the Mount Nansen region including this area. Quantitative gamma-ray spectrometric, VLF-EM and magnetic data were obtained.

In 1996, the Glen claims were optioned to La Rock Mining Corporation which carried out soil sampling later in the year. The eastern portion of the Glen claims were re-staked as Glen cl 11-20 (YC09190) by B. Harris in December 1998. In June 1999 Harris added Glen cl 1-4 (YC15335).

In February 1999, ATAC Resources Ltd. re-staked the occurrence and most of the western portion of the original Glen claims as Sey cl 1-20 (YC09221). ATAC carried out prospecting, geochemical soil sampling and magnetometer surveying in 1999; prospecting in 2001; and prospecting and hand trenching in 2002.

Northern Freegold Resources consolidated the claims in 2006 as part of their Golden Revenue property and performed a property wide VTEM and magnetic airborne survey, including the Stoddart occurrence. Diamond drilling of three holes was performed in 2008. A ground magnetic and VLF-EM geophysical survey was conducted in 2014.

Triumph Gold acquired Northern Freegold Resources in 2015 and the property that includes the Stoddart occurrence is now termed the Freegold Mountain Project.

Regional & Property Geology

The occurrence is partly underlain by Yukon-Tanana Terrane (YTT). The rocks of the YTT in this region consist of Early Mississippian metamorphic rocks separated into meta-sedimentary and meta-igneous suites. The meta-sedimentary suite consists of micaceous quartz-feldspar gneiss, schist and quartzite. The meta-igneous package is comprised of biotite-hornblende feldspar gneiss and coarse-grained granodiorite orthogneiss with lesser amphibolite.

The YTT basement rocks are cut by numerous plutonic and volcanic events from the Mesozoic (Murray & Friend, 2018), including:
1. Early Jurassic Long Lake monzonite to syenite plutonic suites;
2. Mid-Cretaceous Mount Nansen Suite andesite to diorite;
3. Mid-Cretaceous Whitehorse granodiorite, quartz monzonite and granite;
4. Late Cretaceous Casino quartz monzonite;
5. Late Cretaceous Prospector Mountain syenite; and,
6. Quartz feldspar and feldspar hornblende porphyry dykes and plugs.

The major structural feature in the area is the Big Creek Fault with steeply-dipping, northwest-trending dextral faults parallel to the more regional Tintina and Denali faults (AR 097175).

Mineralization & Results

The claims are underlain by Paleozoic hornblende-biotite-feldspar gneiss and schist which are intruded by a roughly elliptical 200 by 490 m stock of hornblende porphyritic syenite of Early Jurassic age. The stock lies within a 425 by 1,160 m area containing swarms of Mid-Cretaceous porphyry dykes of the Mount Nansen Suite. Mineralization discovered by trenching and mapping is present dominantly as pyrite with trace chalcopyrite, malachite and azurite. Trace amounts of molybdenite, magnetite, pyrrhotite, and arsenopyrite are present in association with copper minerals (AR 090906).

The 1993 geochemical sampling program returned highly anomalous values for Au in soil, and moderately anomalous Au values in samples of quartz-arsenopyrite-veined felsic porphyry (AR 093189).

In 1994, ten rocks samples collected on the Glen claims were analysed and returned peak values of 1,164 ppb Au, 1,643 ppm Cu, 5,470 ppm Pb, 762 ppm Zn, 724 ppm As, 804 ppm Sb and > 50.0 ppm Ag. Soil sampling alongside the access road produced several anomalous samples, the best of which returned 574 ppb Au, 197 ppm Cu, 161 ppm Pb, 675 ppm Zn, 2 040 ppm As, 17 ppm Sb and 3.0 ppm Ag (AR 093291).

Diamond drilling in 2008 returned elevated gold and silver values including: 360 ppb Au, 13.4 g/t Ag, and 1.01% Cu over 0.7 m in 08ST-07; 265 ppb Au, 8.8 g/t Ag and 0.68% Cu over 1.1 m in 08ST-07; and 235 ppb Au, 6.0 g/t Ag and 0.46% Cu over 1.0 m in 08ST-09 (Fonesca & Giroux, 2009). 

Location Map

Last Updated: Dec 31, 2020

Work History

Year Work Type Comment
2014 Ground Geophysics: Magnetics And VLF-EM.
2008 Drilling: Diamond 3 diamond drill holes
2006 Airborne Geophysics: Magnetic Property wide survey.
2006 Airborne Geophysics: VTEM Property wide survey.
2002 Other: Prospecting
2002 Trenching: Hand
2001 Other: Prospecting
1999 Geochemistry: Soil
1999 Ground Geophysics: Magnetics
1999 Other: Prospecting
1996 Geochemistry: Soil
1994 Airborne Geophysics: Gamma-Ray Spectrometry Also magnetic and VLF-EM surveys.
1994 Geochemistry: Soil
1994 Other: Prospecting
1994 Geochemistry: Rock
1994 Trenching: Mechanical
1993 Geochemistry: Rock
1993 Geochemistry: Soil
1993 Trenching: Hand
1992 Other: Prospecting
1992 Trenching: Mechanical
1991 Trenching: Mechanical
1990 Trenching: Mechanical
1988 Development, Surface: Access Road
1987 Development, Surface: Access Road
1986 Geochemistry: Soil
1986 Geology: Bedrock Mapping
1985 Geochemistry: Soil
1985 Geology: Bedrock Mapping
1981 Geochemistry: Soil
1975 Ground Geophysics: IP
1974 Geochemistry: Soil
1974 Ground Geophysics: Magnetics
1974 Trenching: Mechanical
1969 Geochemistry: Soil

Regional Geology - Terrane

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

Regional Geology - Bedrock

Group/Suite: Simpson Range
Terrane: Yukon-Tanana
Period Max: Carboniferous
Age Max: 355 MA
Period Min: Carboniferous
Age Min: 345 MA
Rock Major: interm to felsic orthogneiss
Rock Minor:
Reference: Allan & Friend (2018) - YGS OF 2018-2
Geological Unit (1M): MSR
Geological Unit (250K): MgSR

Assessment Reports that overlap occurrence

Report Number Year Title Worktypes Holes Drilled Meters Drilled
096643 2013 2013 Geological and Geochemical Report for the Freegold Mountain Property Reclamation - Development, Surface, Rock - Geochemistry, Silt - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology, Petrographic - Lab Work/Physical Studies, Data Compilation - Pre-existing Data, Backhoe - Trenching, Hand - Trenching
094745 2006 2006 Geophysical Assessment Report on the Freegold Mountain Property Electromagnetic - Airborne Geophysics, Magnetic - Airborne Geophysics
094528 2004 Excavator Trenching on the Seymour Property Rock - Geochemistry, Soil - Geochemistry, Mechanical - Trenching
094040 1999 Prospecting, Soil Geochemistry, and Magnetic Surveys on the Seymour Property Soil - Geochemistry, Magnetics - Ground Geophysics, Prospecting - Other
091804 1985 Geological and Geochemical Report on the NUCLEUS Property Rock - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology, Property Evaluation - Other, Prospecting - Other, Mechanical - Trenching
091823 1985 Geological and Geochemical Report on the Stoddart Property Rock - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology
090048 1975 A Report on an Induced Polarization Survey - Ag and Au Claims IP - Ground Geophysics
091331 1974 Linecutting Report Ag and Au Groups Line Cutting - Other
061154 1974 Application for Northern Mineral Assistance Grant Peg, Au, Ag, Add and Gold Star Claim Groups, Cat Trenching Report Gold Star Group Mechanical - Trenching
061082 1974 Geological, Geophysical and Geochemical Report on the Car 1-40 Mineral Claim Freegold Mountain Area Soil - Geochemistry, Bedrock Mapping - Geology, Magnetics - Ground Geophysics, Line Cutting - Other
060200 1970 Report on the Geophysical and Geochemical Surveys Ram and Bow Claim Groups Electromagnetic - Airborne Geophysics, Magnetic - Airborne Geophysics, Rock - Geochemistry, Soil - Geochemistry

Related References

Number Title Page(s) Document Type
094040 Prospecting, Soil Geochemistry, and Magnetic Surveys on the Seymour Property Assessment Report
091823 Geological and Geochemical Report on the Stoddart Property Assessment Report
094323 Prospecting and Hand Pitting on the Seymour Property Assessment Report
093528 Exploration Report on the Glen,Castle,Rag, and Elephant Claims Assessment Report
093291 Exploration Report on the CARIBOO Property and GLEN Claims Assessment Report
091895 Report on Geological Mapping and Geochemical Surveys Done on the Stoddart Property Assessment Report
YEG2017_4 New contributions to the bedrock geology of the Mount Freegold district, Dawson Range, Yukon (NTS 115I/2, 6 and 7) Annual Report Paper
094251 Prospecting on the Seymour Property Assessment Report
090906 Arctic Red Resources Corporation Geological and Geochemical Report Seymour 1-44 Claims Assessment Report
2018-2 Bedrock geological map of the Mount Freegold district, Dawson Range Open File (Geological - Bedrock)
093189 Exploration Report on the Freegold Mountain Project Freegold Mountain Area Assessment Report
ARMC007852 Orthophoto map - Freegold Mtn. - Job No. 06065-3 Geoscience Map (General)
094745 2006 Geophysical Assessment Report on the Freegold Mountain Property Assessment Report
097175 Drilling and Geochemical Report on the Freegold Mountain Project Assessment Report
Fonseca, A. and Giroux, G., August 31 2009. Technical Report (NI 43-101) on the Freegold Mountain Property, Dawson Range, Yukon, for Northern Freegold Resources Ltd. Available on SEDAR.
GEOLOGICAL SURVEY OF CANADA, 1995. Airborne Geophysical Survey Stoddart Creek, Yukon Territory (NTS 115 I/6), 1;50 000 scale. Department of Energy, Mines and Resources, Open File 3000.
Triumph Gold Corp., Aug/2020. Assessment Report #097397 by J.R. Halle.

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