Occurrence Details


Occurrence Number:
115I 053
Occurrence Name:
Margarete
Occurrence Type:
Hard-rock
Status:
Drilled Prospect
Date printed:
8/9/2022 3:43:21 PM

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General Information
Capsule
Work History
Assessment Reports
References
Resource / Reserve

General Information

Primary Commodities: gold, silver
Aliases: Goldstar, Guder, Freegold
Deposit Type(s): Skarn Au
Location(s): 62°17'33" N - -137°8'42" W
NTS Mapsheet(s): 115I06
Location Comments: Coordinates provided by Triumph Gold in 2020.
Hand Samples Available: Yes
Last Reviewed:

Capsule

Work History

The original discovery in the Mt. Freegold area was made by P.F. Guder in 1930 on the Augusta cl (15494), followed by discoveries on the adjoining Peerless, Gold Star and Margarete claims. Guder explored by hand pits and shallow shafts until 1959, when Conwest, under option, drilled 5 holes (309 m) on the Main Vein and performed bulldozer trenching in 1964 on the Old cl (86068). Guder's claims (Gold Star group) were optioned in 1969 to Yukon Revenue Mines Ltd., which conducted bulldozer trenching and mapping, and in 1973 to Prism Resources Ltd., which did a magnetometer survey and staked an additional 100 claims - PFG, AG, etc (Y75468) in June-September.

Prism transferred the option early in 1974 to Dynasty Exploration Ltd., which explored by grid soil sampling, magnetic survey, bulldozing and 8 holes (653 m) later in the year. Guder's claims were optioned by Arctic Red Resources Corporation from 1980 to 1982, then transferred to Guder Mining Exploration Ltd., which performed trenching in 1982 and 1983. The south side was re-staked as Erick cl (YA82008) in June 1984 by D. Dodge and again as Rick cl (YA92748) in July 1985 by G. Harris. The Guder and Harris claims were optioned in 1986 by Chevron Minerals Ltd., which conducted a grid geochemical survey, and in 1987 by Big Creek Joint Venture (Big Creek Resources Ltd and Rexford Minerals Ltd), which explored with extensive bulldozer and excavator trenching, a VLF-EM and magnetometer survey and 17 holes (741 m) in 1987 and minor trenching in 1988. The claims were transferred back to Harris in September 1989.

Gagan Gold Corporation optioned the property and explored with trenching and six rotary holes (304.8 m) in 1991. G. Harris trenched on the property in January 1993, added several fractional claims in May and conducted a program of soil and rock sampling late in the year.

Redell Mining Corporation optioned the Goldstar property from Harris and Associates in August 1994. In September 1995, Pauline cl (YB37987) and Goldstar cl 1-3 (YB37988) were transferred to B. Harris.

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 Margarete occurrence. Limited trenching was performed at Margarete in 2008.

Triumph Gold acquired Northern Freegold Resources in 2015 and the property that includes the Margarete occurrence is now termed the Freegold Mountain Project. Triumph performed mechanical trenching and diamond drilling of four holes (1349 m) in 2018 and further trenching and diamond drilling (2 holes) in 2019.

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).

Gold bearing veins and skarn at Margarete occur in a roof pendant of Paleozoic metasedimentary rocks enclosed in Mesozoic syenite and granodiorite and intruded by Cretaceous porphyry dykes. The metamorphic rocks consist of quartz-feldspar-mica-chlorite gneiss and schist, and minor marble, amphibolite and quartzite (AR 093019).

Mineralization & Results

Mineralization in the Margarete zone is associated with quartz-carbonate stringers and veinlets in a 3.3 m wide zone of intense argillic alteration and brecciation and quartz-feldspar porphyry dykes. Sulphide minerals are pyrite and lesser arsenopyrite and chalcopyrite, which are commonly oxidized to depths of 20 m or more (AR 092127; AR 092699).

The Margarete vein system has been traced in drill holes and trenches for a total length of 350 m. The mineralized zone strikes west-northwest and dips steeply north. A specimen taken by the GSC from an old dump assayed 2,070 g/t Au (AR 093019). Historical, geological reserves (not NI 43-101 compliant) based on 1987 drilling at 50 m spacing are 123,800 tonnes grading 4.21 g/t Au and 47.2 g/t Ag to a depth of 60 m (AR 092699).

Right lateral faults probably offset the southeast extension of the Margarete zone through the Kirsteen and Augusta showings (MINFILE occurrences 115I 171 and 169) giving a possible total strike length of more than 1.5 km. A gold soil anomaly extends an additional 1 km to the northwest (AR 092699).

Diamond drilling in 1991 tested the Margarete vein at 50 m intervals along strike and intersected 0.049 oz/ton Au and 1.52 oz/ton Ag over 5 feet in hole 91-1 and 0.1635 oz/ton Au and 0.61 oz/ton Ag over 5 feet in 91-3 (AR 093019).

Triumph Gold performed diamond drilling in 2018 and 2019, which intersected significant copper and gold grades in supergene enriched sulphides (including 0.26 g/t Au, 3.3 g/t Ag and 0.17% Cu over 37.5 m in RV18-27) and porphyry style mineralization (including 0.26 g/t Au and 0.11% Cu over 26.38 m in RVD18-37) (MD&A, 23 Apr/2019).

 

Work History

Date Work Type Comment
8/1/2020 Drilling 2 holes, 186.37 m,
12/31/1993 Geochemistry Work carried out on Goldstar property by Harris et al.
12/31/1993 Geochemistry Work carried out on Goldstar property by Harris et al.
12/31/1993 Trenching Work carried out on Goldstar property by Harris et al.
12/31/1991 Drilling Four holes totaling 183 m.
12/31/1988 Trenching
12/31/1987 Drilling Seventeen holes, 741 m.
12/31/1987 Ground Geophysics Also VLF-EM survey.
12/31/1987 Trenching
12/31/1987 Trenching
12/31/1986 Geochemistry
12/31/1983 Trenching
12/31/1982 Trenching
12/31/1974 Drilling Two holes, 219 m.
12/31/1974 Geochemistry
12/31/1974 Ground Geophysics
12/31/1974 Trenching
12/31/1973 Ground Geophysics
12/31/1969 Geology
12/31/1969 Trenching
12/31/1964 Trenching
12/31/1959 Drilling Five holes, 309 m.
12/31/1959 Trenching
12/31/1958 Trenching Work carried out between 1931 and 1958.
12/31/1930 Trenching
12/13/2019 Geochemistry
12/13/2019 Drilling Two holes.
12/13/2019 Trenching
12/13/2018 Drilling Four holes totaling 1349 m.
12/13/2008 Trenching
12/13/2006 Airborne Geophysics Property wide survey.
12/13/2006 Airborne Geophysics Property wide survey.
12/13/1988 Geochemistry

Assessment Reports that overlap occurrence

Report Number Year Title Worktypes Holes Drilled Meters Drilled
094745 2006 2006 Geophysical Assessment Report on the Freegold Mountain Property Electromagnetic Airborne Geophysics, Magnetic Airborne Geophysics
094709 2004 2004 and 2005 Assessment Report on the Goldstar and Glen Property Rock Geochemistry, Bedrock Mapping Geology, Prospecting Other
093019 1991 Rotary Percussion Drilling and Trenching Assessment Report on the Goldstar Property All Weather Road Development, Surface, Reverse Circulation Drilling, Drill Cuttings Geochemistry, Rock Geochemistry, Mechanical Trenching
092699 1989 Trenching Program on the Goldstar Property Rock Geochemistry, Mechanical Trenching
092127 1987 Trenching, Geophysical and Diamond Drilling Program on the Goldstar Property All Weather Road Development, Surface, Diamond Drilling, Rock Geochemistry, EM Ground Geophysics, Magnetics Ground Geophysics, Mechanical Trenching 17 741.10
091896 1986 Report on Geological Mapping and Geochemical and Geophysical Surveys Done on the Goldstar Property Soil Geochemistry, Regional Bedrock Mapping Geology, EM Ground Geophysics, Prospecting 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
061093 1974 Geological and Geophysical Report Gold Star Group Magnetics Ground Geophysics, Hand Trenching
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) Reference Type Document Type
ARMC007647 Correspondence Re: Freegold Mountain property, Carmacks area Property File Collection Miscellaneous Company Documents
ARMC007859 Preliminary reconnaissance-type mapping - Freegold Mtn. - Job No. 06065-3 Property File Collection Geoscience Map (General)
ARMC007648 Correspondence Re: Prism Resources Limited, Gold Star property Property File Collection Miscellaneous Company Documents
ARMC007649 Report on the Gold Star group Property File Collection Report
ARMC007650 Isomagnetic plan map - Gammas - Freegold Mountain project - Fig. 4 Property File Collection Geophysical Map
ARMC007651 Third annual report - Prism Resources Property File Collection Report
091896 Report on Geological Mapping and Geochemical and Geophysical Surveys Done on the Goldstar Property Yukon Government: Energy, Mines and Resources Assessment Report
092699 Trenching Program on the Goldstar Property Yukon Government: Energy, Mines and Resources Assessment Report
ARMC012160 Report on 1974 field work - Northern mineral assistance grant - Gold Star, PEG, ADD, AU and AG groups Property File Collection Report
ARMC012159 Report on the Gold Star group 115-I-6, Whitehorse Mining District, Yukon Territory Property File Collection Report
ARMC012166 Report on the Gold Star group 115-I-6, Whitehorse Mining District, Yukon Territory Property File Collection Report
ARMC012179 Progress reports: June 4, June 24, July, & August 1974 - Freegold Project Property File Collection Report
ARMC012170 Provisional geology map of Mt. Freegold Property File Collection Geoscience Map (Geological - Bedrock)
ARMC012941 Geology map with legend - Guder Best group - Dawson Range Property File Collection Geoscience Map (Geological - Bedrock)
ARMC012167 Geochemical map of Potassium 40 - Contour interval 5 cps - Big Creek area - Carmacks - Job No. 1150 - Fig. No. 5 Property File Collection Geochemical Map
ARMC012184 Sketch maps - Trenchs A - L & P-U - Freegold project Property File Collection Geoscience Map (General)
ARMC012177 Isomagnetic plan (gammas) - Freegold Mountain Project - Fig. 4 Property File Collection Geophysical Map
ARMC012174 Map of total isomagnetic plan - Big Creek area - Carmacks - Job No. 1150 - Fig. No. 4 Property File Collection Geophysical Map
ARMC016627 Land and disposition and mineral deposits chart - Freegold - Big Creek area Property File Collection Geoscience Map (General)
ARMC012175 Magnetometer values (gammas) - Freegold Mountain project - Fig. 3 with notes Property File Collection Geophysical Map
ARMC012176 Magnetometer values (gammas) - Freegold Mountain Project - Fig. 3 with notes Property File Collection Geophysical Map
ARMC012182 Provisional map 115-I/6 - Stoddart Creek with notes Property File Collection Geoscience Map (General)
ARMC012185 Provisional map 115-I/6 - Stoddart Creek with notes on Traverse M22-6 Property File Collection Geoscience Map (General)
ARMC012161 Diamond drill record - Hole No. DDH-G-1 to DDH-G-8 with cross-section maps - Mt. Freegold Property File Collection Drill Logs
ARMC012183 Field sheets for 1974 - Freegold project Property File Collection Geoscience Map (General)
ARMC012173 Flight Line Layout - Big Creek Area - Carmacks - Job No. 1150, Fig. No. 3 Property File Collection Geoscience Map (General)
ARMC012168 General geological report on "Freegold Mountain" property, Whitehorse M.D., Y.T. Property File Collection Report
ARMC012165 Geophysical note on the magnetometer survey of portions of Freegold Mountain, Carmacks, Y.T., on behalf of Prism Resources Property File Collection Report
ARMC012164 Analyses certificate and assay results - Mt. Freegold Property File Collection Assays
ARMC012163 Geology and Development - Area A - Freegold Project Property File Collection Geoscience Map (Geological - Bedrock)
ARMC016626 Geology and mineralization chart - Freegold - Big Creek area Property File Collection Geoscience Map (Geological - Bedrock)
ARMC012181 Magnetometer correction graphs & base station readings - May to June 1974 - Freegold project Property File Collection Geophysical Map
ARMC020318 Report on Braeburn coal area, Carmacks North coal area, Carmacks South coal area, Kotaneelee coal area, Lone Pine Mountain coal occurrence, Porter's coal, Guder's coal, Whitehorse coal area, and Bush Mountain coal area - File 164 Property File Collection Report
ARMC012169 Correspondence Re: Internal report, maps on Mt. Freegold claim groups Property File Collection Miscellaneous Company Documents
ARMC012178 Correspondence with Prism Resources Re: Gold Star group near Carmacks Property File Collection Miscellaneous Company Documents
ARMC012180 Field notes - Magnetometer survey for May to June 1974 - Freegold project Property File Collection Miscellaneous Company Documents
ARMC012171 Cat trenching report - Margarete, Augusta, Liberty, Gold Star, Peerless, Protection, Shearzone 1-2, Vindicator 1-2, Excelsior 1-3, Progress 1-2, Greenstone 5, Greenstone 6 claims - Gold Star group Property File Collection Report
ARMC012172 Cat trenching report - Margarete, Augusta, Gold Star claims - Gold Star group Property File Collection Report
ARMC012162 Field sheets and claim maps - Margarete zone and MJK mineral claims - Mt. Freegold Property File Collection Geoscience Map (General)
BROCK000144 Northern mineral assistance grant report on 1974 field work (Gold Star, PEG, ADD, Au, and AG groups) Property File Collection Report
2018-2 Bedrock geological map of the Mount Freegold district, Dawson Range Yukon Geological Survey Open File (Geological - Bedrock)
093019 Rotary Percussion Drilling and Trenching Assessment Report on the Goldstar Property Yukon Government: Energy, Mines and Resources Assessment Report
YEG2017_4 New contributions to the bedrock geology of the Mount Freegold district, Dawson Range, Yukon (NTS 115I/2, 6 and 7) Yukon Geological Survey Annual Report Paper
092127 Trenching, Geophysical and Diamond Drilling Program on the Goldstar Property Yukon Government: Energy, Mines and Resources Assessment Report
093189 Exploration Report on the Freegold Mountain Project Freegold Mountain Area Yukon Government: Energy, Mines and Resources Assessment Report

Resource/Reserve

Year Zone Type Commodity Grade Tonnage Amount Reported Amount 43-101 Compliant Cut-off
1988 Margarete Vein (Open Pit) Historical Estimate gold 4.21 g/t 123,800 520800 No No Unknown
Archer & Cathro, 1989, by C.A. Main, Assessment Report# 092699. Calculation assumes an idealized 45 degree pit wall, with mining to a depth of 60 m.
1988 Margarete Vein (Open Pit) Historical Estimate silver 47.16 g/t 123,800 5838000 Yes No Unknown
Archer & Cathro, 1989, by C.A. Main, Assessment Report #092699. Calculation assumes an idealized 45 degree pit wall, with mining to a depth of 60 m.