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Yukon Geological Survey

Occurrence Details


Occurrence Number
115I 111
Occurrence Name
Antoniuk
Occurrence Type
Hard-rock
Status
Deposit


General Information

Primary Commodities: gold
Secondary Commodities: silver, copper
Aliases: Mt. Freegold, Rambler
Deposit Type(s): Porphyry Subvolcanic Cu-Au-Ag (As-Sb)
Location(s): 62.2675 N, -137.0944 W
NTS Mapsheet(s): 115I06
Location Comments: Coordinates provided by Triumph Gold in 2020.
Hand Samples Available at YGS: No

Capsule

Work History

First staked as Theodore and Rock cl (15625) by A. Brown and G. Fairclough (Yukon Gold Mining Syndicate) in March 1931. Optioned in November 1936 to Mount Freegold Yukon Mining Ltd., which explored a vein on the Theodore cl with two adits (44.2 m and 10.7 m).

Re-staked as Mayflower cl and Donalda cl 1-8 in November 1939 by G. Fairclough, who carried out trenching. Optioned to Gorski Gold Mines Ltd. in September 1951, which worked only on adjoining ground. Optioned to Ormsby Mines Ltd. in February 1958, which surveyed the claims and took them to lease in 1959. Ormsby was amalgamated into Discovery Mines Ltd. in 1964. Discovery carried out soil sampling in 1974, then optioned the property in 1975 to Rayrock Mines Ltd and Ashland Oil Canada Ltd., which explored with 10 drill holes (1,393.2 m) in 1975.

Esperanza Explorations Ltd. added Gnat cl 1-102 (YA24934) to the north and east in August 1979 and optioned the property in February 1980. The Esperanza option was acquired in May 1980 by Arctic Red Resources Corporation, which carried out geological mapping and grid soil sampling in 1980 and IP, magnetometer and VLF- EM geophysical surveying, trenching and drilled 10 holes (1,193 m) in 1981 before dropping the option.

The Discovery Mines property was optioned to Archer, Cathro and Associates (1981) Ltd. in April 1985 and subsequently sold to Nordac Mining Corporation. Nordac carried out bulldozer trenching, drilling of 8 percussion holes (607 m) and metallurgical testing later in the year in a joint venture with Permian Resources Ltd. In 1986, the joint venture staked Peggy cl 1-5 (YA95146) adjoining the existing claim block to the south and drilled 24 diamond drill holes (2,189 m) to prove up ore reserves and conducted a metallurgical study that was partly funded by the Energy, Mines and Resources Branch of the Canadian Government. In 1987, Nordac changed its name to Big Creek Resources Ltd. and carried out bulldozer trenching and excavator test pitting on the deposit and geochemical sampling of the Peggy claims in a joint venture (Big Creek Joint Venture) with Rexford Minerals Ltd. In 1988, the joint venture drilled 35 shallow rotary holes (1,087 m) to prove-up near surface reserves that might be suitable for a test heap leach operation.

Harris and Associates staked the adjacent Ant etc. cl (YB38142) in July 1993 carried out rock and soil geochemical surveying before transferring them to Richlode Investments Corporation in September 1993. Richlode carried out additional reconnaissance soil and rock sampling in October 1993 and added another Ant claim and six fractional claims (YB46568) in December 1993.

In June 1994, Richlode staked seven more fractional Ant claims and carried geochemical sampling, geological mapping and prospecting on the property. In August 1994, Redell Mining Corporation optioned this and other adjoining properties in the area (Margarete and Red Fox; MINFILE occurrences 115I 053 and 052). In November 1996, the Ant claims were transferred to Redell Mining Corporation, which at this time was developing the adjoining Laforma deposit (MINFILE occurrence 115I 054). All work on the Laforma deposit and adjoining properties was later halted.

In April 1998, the company re-organized and changed its name to FM Resources Corporation, which carried out soil and rock geochemical sampling, trenching and prospecting in peripheral areas of their combined claim holdings during 1999. In 2000, FM returned 76 of 80 claims comprising the Goldstar/Vindicator properties, located to the west, to their original owners and carried out linecutting later that year and limited geological mapping in 2001 on the Peggy and Ant claims and additional line cutting on the Ant claims in 2002. Both these claim groups adjoin the quartz mining leases that encompass the Antoniuk (this occurrence) and the Laforma deposit.

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 Antoniuk deposit.

Triumph Gold acquired Northern Freegold Resources in 2015 and the property that includes the Antoniuk deposit 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.

Mineralization & Results

Early work on the claims was directed toward the northeast striking, steeply west-dipping Rambler vein located on the west side of the claims. A geochemical survey in 1974 discovered the Antoniuk mineralization (AR 092161). Mineralization is present within and adjacent to an intrusive diatreme breccia complex of the early Cretaceous Dawson Range plutonic suite. The breccia and surrounding wall rock are cut by fractures and vuggy 5 mm to 30 cm quartz veins containing minor arsenopyrite, chalcopyrite, tetrahedrite and sulphosalts (AR 092161; AR 062304).

The 1974 and 1980 soil sampling outlined a 430 by 490 m area, open to the south, with anomalous response in arsenic (over 250 ppm) and gold (over 160 ppb) on the northeast side of the claims.

Drilling in 1975 and 1981 outlined a 300 by 450 m area (open to the south) with gold values averaging about 0.5 g/t Au. The best drill intersection was 2.3 g/t Au and 11.7 g/t Ag across 21.0 m. The target, which is located in an area of Yukon that escaped Pleistocene glaciation, is strongly weathered and oxidized to depths of at least 60 m (AR 062304).

Reserves subsequent to the 1987 drill program were calculated at 3,877,900 tonnes grading 1.16 g/t Au, using a cut-off grade of 0.5 g/t Au (AR 062304).

Harris's 1993 geochemical survey on the adjacent Ant claims outlined a coincident Au-Ag-As soil anomaly. Richlode continued Harris's work and in October 1994, three soil lines were run over the southern part of the property. A 250 m wide anomaly was outlined on the ridge top northeast of the Antoniuk property boundary. The multi-element anomaly returned values of 40 to 291 ppb Au, with one sample peaking at >6,667 ppb Au, 1.7 to 12.0 ppm Ag and 444 to 2,338 ppm As. Six rock samples collected from Ant cl 5 and 7F and located northeast of the soil anomaly assayed from 6 to 222 ppb Au and 0.2 to 18.6 ppm Ag. The rocks were collected from a felsic breccia body similar in mineralogy to that on this property (AR 093189).
 

Location Map

Last Updated: Dec 17, 2020

Work History

Year Work Type Comment
2006 Airborne Geophysics: Magnetic Property wide survey.
2006 Airborne Geophysics: VTEM Property wide survey.
2001 Geology: Bedrock Mapping
1998 Geochemistry: Rock Also soil sampling.
1998 Other: Prospecting
1998 Trenching: Mechanical
1994 Geochemistry: Rock
1994 Geochemistry: Soil
1994 Other: Prospecting
1993 Geochemistry: Rock
1993 Geochemistry: Soil
1993 Geology: Bedrock Mapping
1988 Drilling: Rotary Thirty-five holes, 1,087 m.
1987 Trenching: Mechanical
1986 Drilling: Diamond Twenty-four holes, 2,189 m.
1985 Drilling: Rotary Eight holes, 607 m.
1985 Lab Work/Physical Studies: Metallurgical Tests
1985 Trenching: Mechanical
1981 Drilling: Diamond Ten holes, 1,192.99 m.
1981 Ground Geophysics: IP Also magnetic and VLF surveys.
1980 Geochemistry: Soil
1980 Geology: Bedrock Mapping
1975 Drilling: Diamond Ten holes, 1,393.24 m.
1974 Geochemistry: Soil
1970 Geochemistry: Silt Silt and stream sampling.
1970 Geology: Bedrock Mapping
1959 Other: Surveying Took claims to lease.
1939 Trenching
1936 Development, Underground: Drifting/Raising Dug two adits, 44.2 m and 10.7 m.

Regional Geology - Terrane

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


Regional Geology - Bedrock

Supergroup:
Group/Suite: Long Lake
Formation:
Member:
Terrane:
Period Max: Jurassic
Age Max: 188 MA
Period Min: Jurassic
Age Min: 183 MA
Rock Major: monzonite
Rock Minor:
Reference: Allan & Friend (2018) - YGS OF 2018-2
Geological Unit (1M): EJL
Geological Unit (250K): EJyL

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
094226 2000 Linecutting and Geology Program Completed at the Mt. Freegold Property Regional Bedrock Mapping Geology, Line Cutting Other
094141 1999 Geochemical Survey and Trenching Program Completed at the Mt. Freegold Property Rock Geochemistry, Soil Geochemistry, Prospecting Other, Mechanical Trenching
093189 1994 Exploration Report on the Freegold Mountain Project Freegold Mountain Area Rock Geochemistry, Soil Geochemistry, Line Cutting Other, Prospecting Other, Mechanical Trenching
097013 1994 Redell Mining Corp's Laforma Mine at Mount Freegold, brochure Property Evaluation Other
062304 1988 Report on the Antoniuk Property, Mount Freegold Area Data Compilation Pre-existing Data
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
091802 1985 Geochemical and Geological Report on the Nat 1-29 and 30F-33F Claims Mt. Freegold Rock Geochemistry, Silt Geochemistry, Soil Geochemistry, Regional Bedrock Mapping Geology, Line Cutting Other, Prospecting Other, Hand Trenching, Mechanical Trenching
060608 1970 Reconnaissance Geology and Geochemistry Free Mineral Claims, Freegold Mountain Area All Weather Road Development, Surface, Silt Geochemistry, Soil Geochemistry, Bedrock Mapping Geology, Property Evaluation 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
ARMC006756 1981 Final report for Freegold project Report
ARMC006792 Figure F2 - Geology - Freegold project - Mount Freegold area Geoscience Map (Geological - Bedrock)
ARMC004690 Rough draft - YG report - Mount Freegold Report
ARMC007576 Property submission report - Mt. Freegold Report
ARMC012160 Report on 1974 field work - Northern mineral assistance grant - Gold Star, PEG, ADD, AU and AG groups Report
ARMC012159 Report on the Gold Star group 115-I-6, Whitehorse Mining District, Yukon Territory Report
ARMC012166 Report on the Gold Star group 115-I-6, Whitehorse Mining District, Yukon Territory Report
ARMC012179 Progress reports: June 4, June 24, July, & August 1974 - Freegold Project Report
ARMC012170 Provisional geology map of Mt. Freegold Geoscience Map (Geological - Bedrock)
ARMC012167 Geochemical map of Potassium 40 - Contour interval 5 cps - Big Creek area - Carmacks - Job No. 1150 - Fig. No. 5 Geochemical Map
ARMC012184 Sketch maps - Trenchs A - L & P-U - Freegold project Geoscience Map (General)
ARMC012177 Isomagnetic plan (gammas) - Freegold Mountain Project - Fig. 4 Geophysical Map
ARMC012174 Map of total isomagnetic plan - Big Creek area - Carmacks - Job No. 1150 - Fig. No. 4 Geophysical Map
ARMC011333 Soil geochemical map - Arsenic values - Area A - Freegold project Geochemical Map
ARMC011331 Soil geochemical map - Copper values - Area A - Freegold project Geochemical Map
ARMC011332 Soil geochemical map - Integrated metal values for Cu, Pb, As - Area A - Freegold project Geochemical Map
ARMC011330 Soil geochemical map - Lead values - Area A - Freegold project Geochemical Map
ARMC011356 Magnetometer survey - East sheet - Freegold project Geophysical Map
ARMC016627 Land and disposition and mineral deposits chart - Freegold - Big Creek area Geoscience Map (General)
ARMC012175 Magnetometer values (gammas) - Freegold Mountain project - Fig. 3 with notes Geophysical Map
ARMC012176 Magnetometer values (gammas) - Freegold Mountain Project - Fig. 3 with notes Geophysical Map
ARMC011457 Map legend - Mt. Freegold Geoscience Map (General)
ARMC011339 Magnetometer survey - West sheet - Freegold project Geophysical Map
ARMC012182 Provisional map 115-I/6 - Stoddart Creek with notes Geoscience Map (General)
ARMC012185 Provisional map 115-I/6 - Stoddart Creek with notes on Traverse M22-6 Geoscience Map (General)
ARMC012161 Diamond drill record - Hole No. DDH-G-1 to DDH-G-8 with cross-section maps - Mt. Freegold Drill Logs
ARMC012183 Field sheets for 1974 - Freegold project Geoscience Map (General)
ARMC012173 Flight Line Layout - Big Creek Area - Carmacks - Job No. 1150, Fig. No. 3 Geoscience Map (General)
ARMC012168 General geological report on "Freegold Mountain" property, Whitehorse M.D., Y.T. Report
ARMC011461 Compilation map - Freegold Mountain Geoscience Map (Geological - Bedrock)
ARMC012165 Geophysical note on the magnetometer survey of portions of Freegold Mountain, Carmacks, Y.T., on behalf of Prism Resources Report
ARMC012164 Analyses certificate and assay results - Mt. Freegold Assays
ARMC011342 Geochemical soil survey - Area A - Freegold project Geochemical Map
ARMC011338 Geochemical survey - West sheet - Freegold project Geochemical Map
ARMC011341 Geochemical survey - East sheet - Freegold project Geochemical Map
ARMC011324 Geology & assay plan map - Trench A - Area A - Freegold project Geoscience Map (General)
ARMC011326 Geology & assay plan map - Trench B - Area A - Freegold project Geoscience Map (General)
ARMC011325 Geology & assay plan map - Trench C - Area A - Freegold project Geoscience Map (General)
ARMC011323 Geology & assay plan map - Trench D - Area A - Freegold project Geoscience Map (General)
ARMC017713 Assay results - 1974 - Various Dynasty locations Assays
ARMC011322 Geology & assay plan map - Trench E - Area A - Freegold project Geoscience Map (General)
ARMC011321 Geology & assay plan map - Trench F - Area A - Freegold project Geoscience Map (General)
ARMC011327 Geology & assay plan map - Trench G - Area A - Freegold project Geoscience Map (General)
ARMC011328 Geology & assay plan map - Trench H - Area A - Freegold project Geoscience Map (General)
ARMC011329 Geology & assay plan map - Trench I - Area A - Freegold project Geoscience Map (General)
ARMC011318 Geology & assay plan map - Trench K - Area A - Freegold project Geoscience Map (General)
ARMC011317 Geology & assay plan map - Trench L - Area A - Freegold project Geoscience Map (General)
ARMC011314 Geology & assay plan map - Trench P - Area A - Freegold project Geoscience Map (General)
ARMC011316 Geology & assay plan map - Trench Q - Area A - Freegold project Geoscience Map (General)
ARMC011315 Geology & assay plan map - Trench R - Area A - Freegold project Geoscience Map (General)
ARMC011319 Geology & assay plan map - Trenches J & V - Area A - Freegold project Geoscience Map (General)
ARMC011320 Geology & assay plan map - Trenches S, T & U - Area A - Freegold project Geoscience Map (General)
ARMC012163 Geology and Development - Area A - Freegold Project Geoscience Map (Geological - Bedrock)
ARMC011344 Geochemical & magnetometer surveys - Area B - Freegold project Geophysical Map
ARMC011345 Geochemical & magnetometer surveys - Area C - Freegold project Geophysical Map
ARMC016626 Geology and mineralization chart - Freegold - Big Creek area Geoscience Map (Geological - Bedrock)
ARMC018194 Geochemical result sheets and laboratory reports - Freegold Assays
ARMC012181 Magnetometer correction graphs & base station readings - May to June 1974 - Freegold project Geophysical Map
ARMC011343 Magnetometer survey - Area A - Freegold project Geophysical Map
ARMC012169 Correspondence Re: Internal report, maps on Mt. Freegold claim groups Miscellaneous Company Documents
ARMC012178 Correspondence with Prism Resources Re: Gold Star group near Carmacks Miscellaneous Company Documents
ARMC011460 Cross section - DDH-G-1 - Mt. Freegold Geoscience Map (General)
ARMC011459 Cross section - DDH-G-2 - Mt. Freegold Geoscience Map (General)
ARMC011458 Cross section - DDH-G-3 - Mt. Freegold Geoscience Map (General)
ARMC011452 Cross section - DDH-G-4 - Mt. Freegold Geoscience Map (General)
ARMC011453 Cross section - DDH-G-5 - Mt. Freegold Geoscience Map (General)
ARMC011454 Cross section - DDH-G-6 - Mt. Freegold Geoscience Map (General)
ARMC011456 Cross section - DDH-G-7 - Mt. Freegold Geoscience Map (General)
ARMC011455 Cross section - DDH-G-8 - Mt. Freegold Geoscience Map (General)
ARMC012180 Field notes - Magnetometer survey for May to June 1974 - Freegold project 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 Report
ARMC012172 Cat trenching report - Margarete, Augusta, Gold Star claims - Gold Star group Report
ARMC012162 Field sheets and claim maps - Margarete zone and MJK mineral claims - Mt. Freegold Geoscience Map (General)
BROCK000136 Geology - Freegold project - Mount Freegold area - Fig. F2 (coloured) Geoscience Map (Geological - Bedrock)
BROCK000139 Report - Freegold area project - 115-I-3 & 6 - CAR and MJK claims Report
BROCK000141 Gold geochemistry - Freegold project - With hand drawn information Geochemical Map
BROCK000142 Geophysical cross sections - Lines 00, 2N, 4N, 6N, 8N, 10N, 12N - Freegold LaForma Geophysical Map
BROCK000143 Presidents report - Freegold Laforma - Arctic Red Resources Corp. Report
BROCK000146 Gold geochemistry - Freegold project - Figure F3 with handwritten information and pencil marks Geochemical Map
BROCK000147 Progress report Freegold project - May 22, 1981 Report
BROCK000148 Final report - 1980 Freegold project - Mount Freegold area Report
BROCK000149 Report on the combined geophysical surveys on the Freegold project Report
BROCK000150 Trace element distribution in drill core at Mt. Freegold - Addendum to final report - 1980 Freegold project Report
BROCK000151 Progress report - Freegold project - June 15, 1981 Report
BROCK000152 Progress report - Freegold project - July 8, 1981 Report
BROCK000153 Surface plan and drill hole sections - Grid 200 and 500 - Mt. Freegold Geoscience Map (General)
BROCK000154 X-section - Line 2S - Holes AR-81-02, 03, 04 Geoscience Map (General)
BROCK000155 Magnetometer survey - Area A - Freegold project Geophysical Map
BROCK000156 Geochemical soil survey - Area A - Freegold project Geochemical Map
BROCK000157 Geochemical & magnetometer surveys - Area B - Freegold project Geochemical Map
BROCK000158 Geochemical & magnetometer surveys - Area C - Freegold project Geochemical Map
BROCK000159 Geochemical survey - East sheet - Freegold project Geochemical Map
BROCK000160 Geochemical survey - West sheet - Freegold project Geochemical Map
BROCK000161 Magnetometer survey - West sheet - Freegold project Geophysical Map
BROCK000162 Magnetometer survey - East sheet - Freegold project Geophysical Map
BROCK000163 Compilation map - Freegold Mtn, Yukon - Contour interval 50' Geoscience Map (General)
BROCK000164 Soil geochem. - Arsenic values - Area A - Freegold project Geochemical Map
BROCK000165 Soil geochem. - Intergrated metal values - Cu, Pb, As - Area A - Freegold project Geochemical Map
BROCK000166 Soil geochem. - Copper values - Area A - Freegold project Geochemical Map
BROCK000167 Soil geochem. - Lead values - Area A - Freegold project Geochemical Map
062304 Report on the Antoniuk Property, Mount Freegold Area Assessment Report
094305 Geological Mapping Program Completed at the Mt. Freegold Property Assessment Report
092161 Report on Trenching Program and Metallurgical Testing Antoniuk Property, Mt. Freegold Assessment Report
094226 Linecutting and Geology Program Completed at the Mt. Freegold Property Assessment Report
1987-2(G) Geology of Mt. Nansen (115I/3) and Stoddart Creek (115I/6), Dawson Range, Central Yukon Open File (Geological - Bedrock)
093189 Exploration Report on the Freegold Mountain Project Freegold Mountain Area Assessment Report
094307 Linecutting Program Completed at the Mt. Freegold Property Assessment Report
092086 Report on Geochemical Survey Antoniuk Property Mt. Freegold Assessment Report
093248 Exploration Report on the Ant Property Freegold Mountain Area Assessment Report
1987McInnes Geological and precious metal evolution at Freegold Mountain, Dawson Range, Yukon MSc Thesis
2018-2 Bedrock geological map of the Mount Freegold district, Dawson Range Open File (Geological - Bedrock)
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
060608 Reconnaissance Geology and Geochemistry Free Mineral Claims, Freegold Mountain Area Assessment Report
060200 Report on the Geophysical and Geochemical Surveys Ram and Bow Claim Groups Assessment Report
091802 Geochemical and Geological Report on the Nat 1-29 and 30F-33F Claims Mt. Freegold Assessment Report
094141 Geochemical Survey and Trenching Program Completed at the Mt. Freegold Property Assessment Report
092127 Trenching, Geophysical and Diamond Drilling Program on the Goldstar Property Assessment Report
Citations
Campbell, J., Armitage, A. and Barnes W., April 19 2010. Technical Report on the Nucleus Property, Freegold Mountain Project, Including an Updated Mineral Resource Estimate, for Northern Freegold Resources Ltd.
Last Updated: Dec 17, 2020

Resource/Reserve

Year Zone Type Commodity Grade Tonnage Amount Reported Amount 43-101 Compliant Cut-off
1988 ANTONIUK (OPEN PIT) Historical Estimate gold 1.16 g/t 3,877,900 No No 0.5g/t Au
1986 Antoniuk oxide and sulphide (Open Pit) Historical Estimate gold 1.06 g/t 4,087,000 No No 0.5g/t Au

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