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Occurrence Details


Occurrence Number
115I 107
Occurrence Name
Nucleus
Occurrence Type
Hard-rock
Status
Deposit


General Information

Primary Commodities: gold, silver, copper
Secondary Commodities: tungsten, molybdenum
Aliases: Golden Revenue, Freegold
Deposit Type(s): Porphyry Cu-Mo-Au
Location(s): 62.337130 N, -137.3296 W
NTS Mapsheet(s): 115I06
Location Comments: Coordinates provided by Triumph Gold in 2020.
Hand Samples Available at YGS: Yes

Capsule

Work History

Staked as Revenue cl 1-22 (Y24021) by Yukon Revenue Mines Ltd in 1968 and optioned in 1970 by Kaiser Resources Ltd, which carried out bulldozer trenching and drilling of 5 percussion holes (428 m) and 4 core holes (639 m).

In 1980, the Nat Joint Venture (Armco Mineral Exploration Ltd. and Chevron Canada Ltd.) tied on Nucleus cl 1-34 (YA51189) to the northwest and carried out grid soil geochemical sampling, prospecting and geological mapping from 1980-1982; staked Nucleus cl 35-50 (YA60256) in 1981; magnetometer surveying in 1981; bulldozer trenching, geochemical sampling and geological mapping in 1983-1984; and drilled 3 holes (315.2 m) in 1984. The Joint Venture staked Nucleus cl 51-141 (YA82735) to the north and west of the existing claim block in 1984; ERL cl 1-268 (YA92344) to the south in 1985; and ERL cl 269-274 (YA93132) and MEC cl 1-8 (YA93679) also to the south in 1985. Geological mapping, prospecting and geochemical soil sampling was carried out during 1985 on the newly staked claims. In 1986, the joint venture carried out additional bulldozer trenching, geological mapping and geochemical sampling on the main showing.

The Big Creek Joint Venture optioned the Nucleus property in 1987 and carried out rotary drilling of 35 shallow holes (1 312 m) to prove up near surface reserves suitable for test heap leach mining. In 1989, Big Creek purchased Rexford's and Chevron's interests and carried out bulldozer trenching and drilled 6 holes (591.9 m) that year and a further five holes (738.5 m) in 1991.

In 1995, Nucleus cl 1-40 (YA51189) were sold to Amarc Resources Ltd., which sold them to W4 Joint Venture in 1997. In 1999, ATAC Resources purchased the claims from the joint venture group, optioned the adjoining Revenue claims from YKR International Resources Ltd. (formerly Yukon Revenue) and tied on Nuc cl 1-7 (YC09279) to the north later in 1999, consolidating a total of 151 claims in the area to form a single contiguous block, which they named the Golden Revenue property.

ATAC carried out geological mapping, prospecting, soil sampling, magnetometer surveying and hand trenching during 1999 and linecutting, road building and excavator trenching in 2000. In 2001, the company carried out IP and HLEM geophysical surveying, minor prospecting, excavator trenching and drilled 6 holes (1 202 m), all in the vicinity of the Nucleus zone.

In 2004, Yale Resources Ltd. optioned the Golden Revenue property and drilled 14 diamond drill holes (1 832 m) later that year, before dropping its option without earning any interest in 2005.

In 2006, Northern Freegold Resources Ltd. optioned the Nucleus claims from ATAC Resources. The company spent most of 2006 acquiring and consolidating a large land package measuring in excess of 166 square kilometers of claims, which they named the Freegold Mountain project. The company carried out prospecting, geologically mapping and sampling programs and flew extensive airborne geophysical surveys. The company also drilled 26 diamond drill holes (4 798 m) and completed extensive rotary blast drilling on the Nucleus zone. In 2007, the company drilled 27 diamond drill holes (6 313 m ) over 3 months on the Nucleus zone. In 2008, Northern Freegold drilled 53 diamond drill holes (13 287 m) on the Nucleus zone.

In 2009, the company announced a initial National Instrument (NI) 43-101 mineral resource estimate for the Nucleus zone and drilled 44 holes for a total of 10 440 m in the Nucleus zone, as well as 1 241 m of rotary air blast drilling in 21 holes. They also performed stream sediment sampling, geological mapping, and ground magnetic and radiometric surveys.

An updated resource estimate was released for the Freegold Mountain project in a report by Campbell, Armitage and Barnes, dated April 19, 2010. Northern Freegold also drilled 11 diamond drill holes (3 105.92 m), 6 RC holes (862.59 m) and carried out rock and soil geochemistry and a TITAN IP ground survey.

A revised resource estimate on the Nucleus deposit was released in a report by GeoVector Management dated April 07, 2011. Work in 2012 at Nucleus consisted of 5 diamond drill holes (2 452 m) and preliminary metallurgical testing.

An updated resource estimate was released for both Nucleus and Revenue deposits by Northern Freegold in a February 22, 2013 report by GeoVector Management.

Northern Freegold then released the technical report for the Preliminary Economic Assessmment (NI 43-101 compliant) for both the Nucleus and Revenue deposits on April 09 2013. The resource estimate is based on a conceptual optimized open pit mining plan.

A revised resource estimate was released by Northern Freegold in a February 28, 2015 report by GeoVector Management Inc.

Triumph Gold acquired Northern Freegold Resources in 2015 and carried out a re-logging program in 2016 at Nucleus. Triumph carried out diamond drilling (16 holes, 5 258 m) and rock geochemistry in 2017 and 21 diamond drill holes (4 159 m) and rock sampling in 2018. In 2020, Triumph released an updated, NI 43-101 compliant resource estimate on March 27, 2020 prepared by R. Sim and B. Davis.

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 composed 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 (Allan & 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 Nucleus deposit is hosted in the tightly-folded, sheared and brecciated Paleozoic schists and gneisses of the YTT basement rock Snowcap assemblage. Cutting them are east trending Late Cretaceous quartz-feldspar porphyry dykes. The dykes are directly associated with increased mineralization at the Nucleus deposit and are thought to represent rocks which have infilled zones of dilation and/or tension gashes resulting from brittle tectonism. The structural system containing the Nucleus deposit is dominated mainly by the steeply dipping, northwest-trending North and South faults (Davis & Sim, 2020).

Mineralization & Results

The Nucleus gold-silver-copper deposit consists of polyphase quartz-chalcopyrite-pyrite-arsenopyrite veins, infill breccia and semi- to massive-sulphide lenses consistent with multiple phases of skarn and epithermal gold mineralization. The host schists and gneisses (of greenschist origin) have been overprinted by dominantly phyllic alteration (especially near veins and structures) with local pervasive actinolite skarn. In places, the skarns have been replaced with sulphides. Mineralization at the contact between the gneisses and the granite is gold ± copper bearing pyrrhotite ± chalcopyrite ± pyrite lenses. (Davis & Sim, 2020).

The 1970 drilling cut minor chalcopyrite and traces of molybdenite associated with weakly pyritized quartz veining. The best intersection was 0.074% Cu from 30 to 67 m in percussion hole 70-9.

The Nat Joint Venture work was directed toward the gold potential of the property. The bulldozer trenching explored a 400 x 400 m area with erratic anomalous gold soil values and associated anomalous values in arsenic, copper, tungsten and silver. Minor sulphides, including tetrahedrite, are associated with the dykes.

The 1988 drilling identified a high grade zone with reserves of 211 925 tonnes grading 3.16 g/t Au (uncut) with a 4.6:1 waste: ore ratio. One drill hole intersected 34.9 g/t Au over 13.7 m, but this was not confirmed by nearby drill holes. This zone (formerly Anomaly #2) comprises the core of what is now referred to as the Nucleus zone.

The 1989 surface work showed that the highest grades are associated with gouge zones and quartz stockworks adjacent to porphyry dykes. Multi-element analysis showed a strong correlation between gold, silver, arsenic and bismuth. The best trench results came from the south side of the deposit, where samples of quartz-veined breccia and gouge in a series of NNW faults averaged 1.90 g/t Au across 20 m. The 1989 drilling confirmed the presence of a well defined, gold-bearing leached cap 60-100 m thick. Two holes that extended beneath the cap discovered a supergene sulphide zone containing copper and gold. Hole 89-1 intersected 38 m of supergene sulphide mineralization that averaged 0.87 g/t Au and 0.52% Cu.

Drilling in 1991 tested the Nucleus zone at depth below the leached cap. Hole DN91-2 returned 1.01 g/t Au and 0.04% Cu over 117 m in the leached cap and 0.86 g/t Au, 0.24% Cu over 28.7 m in the underlying supergene zone (AR 092995).

Interpretation of the 2001 drill data appears to indicate that gold distribution within the stockwork system comprising the core of the Nucleus zone is primarily controlled by proximity to a series of en echelon, moderately east dipping quartz-feldspar porphyry dykes and that most of the gold occurs in a series of broad bands approximately paralleling the trend of the dykes. The best intersection grades 1.32 g/t Au over 57.76 m from Hole DN01-03, which tested an area of chargeability highs identified northwest of the mineralized area previously outlined by trenching.

Trenching in 2001 tested targets on the periphery of the Nucleus zone and exposed an area, located 300 m south of the most recent drilling, which produced high grade assays from quartz veins. Channel sampling of the northernmost trench returned 8.89 g/t Au over 3.3 m, while sampling of a second trench located 120 m further south returned 3.63 g/t Au over 9.5 m (AR 094539).

Northern Freegold's 2006 through 2008 diamond drill programs were aimed at identifying a low grade bulk tonnage near surface gold target. In mid-2008 diamond drilling encountered high grade gold bearing ± chalcopyrite ± pyrite veins and gold bearing infill in breccias and gold -rich ± copper skarns that appear to follow the east-west orientation of the foliation within the metasediments. In addition, the company identified a set of gold bearing quartz + chalcopyrite +/- pyrite veins that also trend east-west in addition to the traditionally targeted north-south trending vein system.

Step-out drilling to the south of the calculated resource area in 2009 intersected 25.38 m of 1.25 g/t Au (DDH GRD-128) (Campbell et al., 2010).

Drilling in 2010 intersected porphyry style mineralization with long zones of copper mineralization that returned significant intervals of 0.86 g/t Au, 1.64 g/t Ag and 0.02% Cu over 204.6 m, including 29.6 m of 0.19% Cu in GRD10-64, and 0.12 g/t Au, 1.13 g/t Ag and 0.1% Cu over 81.03 m, including 15.0 m of 0.41 g/t Au, 2.24 g/t Ag and 0.2% Cu (AR 095374).

Results of the 2012 drilling program at Nucleus intersected high grade gold mineralization where moderately south dipping stratabound sulphides hosted in biotite schist are crosscut by feldspar porphyry dykes, breccia zones and shear zones. Drill holes intersected significant intervals of up to 0.95 g/t Au, 4.91 g/t Ag, and 0.26% Cu over 35.3 m in GRD12-175 and 0.4 g/t Au, 0.99 g/t Ag and 0.26% Cu over 45.55 m in GRD12-176 (Triumph Gold, MD&A, 26 Nov/2012).

The most significant intercepts encountered in 2017 drilling are from N17-10, which graded 2.09 g/t Au over 1.53 m within a larger zone grading 0.567 g/t Au over 21.53 m (Triumph Gold, MD&A, 27 Apr/2018). Further drilling by Triumph in 2019 intersected up significant intervals, including: 19.8 g/t Au over 0.84 m in N18-06; 15.93 g/t Au, 5.0 g/t Ag and 0.551% Cu over 1.0 m in N18-17; 13.67 g/t Au, 10.0 g/t Ag and 0.542% Cu over 1.67 m in N18-04; and 9.13 g/t Au over 2.0 m in N18-16 (Triumph Gold, MD&A, 23 Apr/2019). 

Location Map

Last Updated: Feb 25, 2021

Work History

Year Work Type Comment
2020 Studies: Resource Estimate Updated resource estimate prepared by R. Sim and B. Davis, March 27, 2020.
2018 Drilling: Diamond Twenty-one holes, 4159 m.
2018 Geochemistry: Rock Grab sampling.
2017 Drilling: Diamond Sixteen holes, 5258 m.
2017 Geochemistry: Rock Grab sampling.
2016 Geochemistry: Drill Core
2016 Other Core relogging program.
2015 Studies: Resource Estimate Updated resource estimate. GeoVector Management Inc, Feb 28, 2015.
2013 Studies: Preliminary Economic Assessment Geovector Management Inc, April 2013. Report includes both Nucleus and Revenue (Minfile 115I 042) deposits.
2013 Studies: Resource Estimate GeoVector Management Inc, Feb 22 2013. Nucleus and Revenue (Minfile 115I 042) deposits.
2012 Drilling: Diamond Five holes, 2452 m.
2012 Lab Work/Physical Studies: Metallurgical Tests
2011 Studies: Resource Estimate GeoVector Management, Armitage and Campbell, April 07 2011. Nucleus only.
2010 Drilling: Diamond Eleven holes, 3105.2 m.
2010 Drilling: Reverse Circulation Six holes, 862.59 m.
2010 Geochemistry: Drill Core
2010 Geochemistry: Rock Grab sampling.
2010 Geochemistry: Soil
2010 Ground Geophysics: IP TITAN survey.
2010 Studies: Resource Estimate Campbell, Armitage and Barnes, April 19 2010. Nucleus deposit only.
2009 Drilling: Diamond Forty-four holes, 10,400 m.
2009 Drilling: Rotary Twenty-one holes, 1,241 m.
2009 Geochemistry: Silt
2009 Ground Geophysics: Magnetics Also radiometric surve.
2009 Studies: Resource Estimate Fonseca and Giroux, 2009. Nucleus and Tinta zones.
2008 Drilling: Diamond Fifty-three holes, 13,287 m. Drill logs for two holes filed for assessment.
2007 Drilling: Diamond Twenty-seven holes, 6,313 m. Drill logs for two holes filed for assessment.
2006 Airborne Geophysics: VTEM Company flew its entire land package.
2006 Drilling: Diamond Twenty-six holes, 4,798 m. No drill logs were filed.
2006 Pre-existing Data: Research/Summarize Company compiled all previous data, consolidated claims into large land package.
2004 Drilling: Diamond Fourteen holes, 1,832 m. Assessment report pending, drill statistics derived from company press releases.
2001 Drilling: Diamond Six holes, 1,202 m.
2001 Ground Geophysics: IP Also HLEM survey.
2001 Other: Prospecting
2001 Trenching: Mechanical
2000 Development, Surface: Access Road
2000 Other: Prospecting
2000 Trenching: Hand
1999 Geochemistry: Soil
1999 Geology: Bedrock Mapping
1999 Ground Geophysics: IP Also HLEM survey.
1999 Other: Prospecting
1999 Trenching: Mechanical
1991 Drilling: Diamond Five holes, 738.5 m. Continuation of 1989 drill program. Work carried out by Big Creek.
1989 Drilling: Diamond Six holes, 595.4 m.
1989 Trenching: Mechanical
1988 Drilling: Rotary Thirty-five holes, 1,312 m.
1987 Trenching: Mechanical
1985 Geochemistry: Soil
1985 Trenching: Mechanical 1300 m of excavator trenching.
1984 Drilling: Diamond Three holes, 312 m.
1984 Trenching: Mechanical
1983 Trenching: Mechanical
1982 Geochemistry: Soil
1982 Geology: Bedrock Mapping
1982 Other: Prospecting
1981 Geochemistry: Soil
1981 Geology: Bedrock Mapping
1981 Ground Geophysics: Magnetics
1981 Other: Prospecting
1980 Geochemistry: Soil
1980 Geology: Bedrock Mapping
1980 Other: Prospecting
1970 Drilling: Diamond Four holes, 639 m.
1970 Drilling: Percussion Five holes, 428 m.
1970 Trenching: Mechanical

Regional Geology - Terrane

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


Regional Geology - Bedrock

Supergroup:
Group/Suite: Snowcap
Formation:
Member:
Terrane: Yukon-Tanana
Period Max: Ediacaran
Age Max: 635 MA
Period Min: Devonian
Age Min: 375 MA
Rock Major: psammite, schist
Rock Minor: marble, mafic volcanic rocks
Reference: Allan & Friend (2018) - YGS OF 2018-2
Geological Unit (1M): PDS
Geological Unit (250K): PDS1

Assessment Reports that overlap occurrence

Report Number Year Title Worktypes Holes Drilled Meters Drilled
095374 2010 2010 Drilling Assessment Report on the REVENUE and NUCLEUS Properties, Free Gold Mountain Project, Yukon Diamond Drilling, Reverse Circulation Drilling, Drill Core Geochemistry, Drill Cuttings Geochemistry, Rock Geochemistry, Soil Geochemistry, IP Ground Geophysics 11 3015.92
095250 2009 2009 Drilling Report on the Nucleus Property with Assessment Applied to the Caribou Creek Claims, Yukon Diamond Drilling, Rotary Drilling, Silt Geochemistry, Regional Bedrock Mapping Geology 43 1241.36
095151 2009 2009 Drilling Assessment Report on the NUCLEUS Property-FREEGOLD MOUNTAIN Project Diamond Drilling, Rotary Drilling, Drill Core Geochemistry, Drill Cuttings Geochemistry 43 10430.88
094745 2006 2006 Geophysical Assessment Report on the Freegold Mountain Property Electromagnetic Airborne Geophysics, Magnetic Airborne Geophysics
094539 2004 Diamond Drilling at the Golden Revenue Property Big Creek, Nucleus, and Revenue Claim Blocks Diamond Drilling, Drill Core Geochemistry 14 1832
094256 2001 Diamond Drilling, Excavator Trenching, and Geophysical Surveys on the Golden Revenue Property Diamond Drilling, Drill Core Geochemistry, IP Ground Geophysics, Prospecting Other, Mechanical Trenching 6 1202
094102 1999 Geological Mapping, Prospecting, Soil Geochemistry, Hand Trenching, and Ground Magnetic Surveys on the Golden Revenue Property Soil Geochemistry, Detailed Bedrock Mapping Geology, Magnetics Ground Geophysics, Prospecting Other, Hand Trenching
092831 1989 Nucleus Property 1989 Final Report Big Creek Area Diamond Drilling, Rock Geochemistry, Soil Geochemistry, Mechanical Trenching 6 591.90
092703 1988 Report on Drilling and Trenching Program Nucleus Property All Weather Road Development, Surface, Rotary Drilling
092131 1987 Report on Trenching Program and Geophysical Survey Revenue Property Revenue Creek Rock Geochemistry, Soil Geochemistry, EM Ground Geophysics, Magnetics Ground Geophysics, Mechanical Trenching
091882 1986 Report on Bulldozer and Excavator Trenching Done at Nat Joint Venture's Nucleus 1-141 Claims Soil Geochemistry, Bedrock Mapping Geology, Mechanical Trenching
091804 1985 Geological and Geochemical Report on the NUCLEUS Property Rock Geochemistry, Soil Geochemistry, Bedrock Mapping Geology, Property Evaluation Other, Prospecting Other, Mechanical Trenching
091600 1984 Geological, Geochemical, and Geophysical Report for Bulldozer Trenching and Diamond Drilling Program at Nat Joint Venture's Nucleus 1-141 All Weather Road Development, Surface, Diamond Drilling, Soil Geochemistry, EM Ground Geophysics, Line Cutting Other, Mechanical Trenching 3 315.20
062183 1983 Preliminary Evaluation Report on the Revenue Creek Property Preliminary Economic Assessment Studies
091439 1982 Nat Joint Venture Geological, and Geochemical Report Nucleus 1-50 Claims Rock Geochemistry, Soil Geochemistry, Detailed Bedrock Mapping Geology
090973 1981 Nat Joint Venture Geological, Geochemical, and Geophysical Report Nucleus 1-50 Claims Soil Geochemistry, Detailed Bedrock Mapping Geology, Magnetics Ground Geophysics, Line Cutting Other, Data Compilation Pre-existing Data
090739 1980 Geochemical and Geological Report Nat Joint Venture Nucleus 1-34 Claims Rock Geochemistry, Silt Geochemistry, Soil Geochemistry, Regional Bedrock Mapping Geology, Prospecting Other
090087 1975 Geological Mapping, Geochemical and Magnetometer Surveys - Big Creek West, Big Creek East, Bow Creek Properties Soil Geochemistry, Regional Bedrock Mapping Geology, Magnetics Ground Geophysics, Line Cutting Other, Prospecting Other, Surveying 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
ARMC008517 Fact sheet - Revenue-nucleus Cu+Au porphyry News Release
ARMC012155 Report on induced polarization survey, Carmacks area, Yukon - On behalf of Yukon Revenue Mines Ltd. Report
ARMC012153 1988 diamond drill core logs - 88G-01 to 88G-05 - Grum Drill Logs
ARMC016627 Land and disposition and mineral deposits chart - Freegold - Big Creek area Geoscience Map (General)
ARMC012156 Geological report on the Yukon Revenue property, Carmacks, Y.T. (formely Revenue Copper) Report
ARMC012157 Final report - Revenue Creek prospect Report
ARMC016626 Geology and mineralization chart - Freegold - Big Creek area Geoscience Map (Geological - Bedrock)
ARMC012158 Diamond drill logs - T-1, 68-1 to 68-5; 69-1 to 69-4 - Yukon Revenue property Drill Logs
090739 Geochemical and Geological Report Nat Joint Venture Nucleus 1-34 Claims Assessment Report
094539 Diamond Drilling at the Golden Revenue Property Big Creek, Nucleus, and Revenue Claim Blocks Assessment Report
094837 2007 Drilling Assessment on the NUCLEUS Zone-FREEGOLD MOUNTAIN Property Assessment Report
092131 Report on Trenching Program and Geophysical Survey Revenue Property Revenue Creek Assessment Report
091882 Report on Bulldozer and Excavator Trenching Done at Nat Joint Venture's Nucleus 1-141 Claims Assessment Report
092831 Nucleus Property 1989 Final Report Big Creek Area Assessment Report
091508 Nat Joint Venture Bulldozer Trenching Report Nucleus 1-50 Claims Assessment Report
092609 Report on Diamond Drilling, Trenching Program and Geophysical Survey Revenue Property Revenue Creek Assessment Report
094526 Geological and Geochemical Report on the Goal Net Claim Block Assessment Report
092995 Revenue-Nucleus Property, 1991 Final Report, Big Creek Area Assessment Report
094191 Linecutting, Road Building and Excavator Trenching on the Revenue Property Assessment Report
095065 2008 Drilling Assessment Report on the NUCLEUS Zone, FREEGOLD MOUNTAIN Property Assessment Report
091600 Geological, Geochemical, and Geophysical Report for Bulldozer Trenching and Diamond Drilling Program at Nat Joint Venture's Nucleus 1-141 Assessment Report
092703 Report on Drilling and Trenching Program Nucleus Property Assessment Report
094102 Geological Mapping, Prospecting, Soil Geochemistry, Hand Trenching, and Ground Magnetic Surveys on the Golden Revenue Property Assessment Report
090973 Nat Joint Venture Geological, Geochemical, and Geophysical Report Nucleus 1-50 Claims Assessment Report
091804 Geological and Geochemical Report on the NUCLEUS Property Assessment Report
097175 Drilling and Geochemical Report on the Freegold Mountain Project Assessment Report
094745 2006 Geophysical Assessment Report on the Freegold Mountain Property Assessment Report
095374 2010 Drilling Assessment Report on the REVENUE and NUCLEUS Properties, Free Gold Mountain Project, Yukon Assessment Report
Citations
Allan, M.M. and Friend, M.A., 2018. Bedrock geological map of the Mount Freegold district, Dawson Range (NTS 115I/6 and parts of 115I/2, 3, 5, 7, 10, 11, 12). Yukon Geological Survey, Open File 2018-2, scale 1:50000.
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.
Davis, B. and Sim, R. March 27, 2020. Freegold Mountain Project 2020 NI 43-101 Technical Report for Triumph Gold Corp.
Fonseca, A. and Giroux, G., August 31 2009. Technical Report on the Freegold Mountain Property, Dawson Range, Yukon, for Northern Freegold Resources Ltd.
GeoVector Management Inc, April 07 2011. Technical Report on the Revised Resource Estimate on the Nucleus Au-Cu-Ag deposit, Freegold Mountain Project, for Northern Freegold Resources Ltd. by A. Armitage and J. Campbell.
GeoVector Management Inc, April 09 2013. Technical Report of the Golden Revenue Property, Freegold Mountain Project, Preliminary Economic Assessment, for Northern Freegold Resources Ltd.
GeoVector Management Inc, February 22 2013. Technical Report on the Golden Revenue Property, Freegold Mountain Project, Updated Mineral Resource Estimate for the Nucleus Deposit, for Northern Freegold Resources Ltd.
GeoVector Management Inc, March 03 2012. Technical Report on the Resource Estimate for the Revenue Au-Cu-Mo porphyry deposit, Freegold Mountain Project, for Northern Freegold Resources Ltd.
Northern Freegold Resources Ltd., News Release. 13 Sep/2006, 9 Nov/2006, 23 Aug/2007, 1 Oct/2007, 26 Jan/2009, 26 Mar/2009, 6 May/2009, 18 Jun/2009, 27 Jul/2009; 22 Oct/2009
Paulter, J. (2006). Evaluation Report on the Freegold Project for Northern Freegold Resources. Available on SEDAR.
Triumph Gold Corp., Aug/2020. Assessment Report #097397 by J.R. Halle.
Triumph Gold Corp., MD&A: 26 Nov/2012; 27 Apr/2018; 23 Apr/2019
Triumph Gold Corp., New Release: 16 Oct/2018
Last Updated: Feb 25, 2021

Resource/Reserve

Year Zone Type Commodity Grade Tonnage Amount Reported Amount 43-101 Compliant Cut-off
2013 Nucleus- in pit (Open Pit) Indicated gold .607 g/t 52,474,000 31,850,000 Yes Yes pit-optimized
2013 Nucleus- in pit (Open Pit) Inferred gold .434 g/t 2,724,000 1,182,000 Yes Yes Pit-optimized
2013 Nucleus- in pit (Open Pit) Indicated silver .8 g/t 52,474,000 40,745,500 Yes Yes pit-optimized
2013 Nucleus- in pit (Open Pit) Inferred silver .79 g/t 2,724,000 2,115,000 Yes Yes pit optimized
2013 Nucleus- In pit (Open Pit) Indicated copper .052 % 52,474,000 27,319,000 Yes Yes pit optimized
2013 Nucleus- in pit (Open Pit) Inferred copper .011 % 2,724,000 329,800 Yes Yes pit-optimized
2013 Nucleus (Open Pit) Indicated gold .567 g/t 71,904,900 40,746,000 Yes Yes 0.25g/t AuEq
2013 Nucleus (Open Pit) Indicated silver .851 g/t 71,904,900 61,205,000 Yes Yes 0.25 AuEq
2013 Nucleus (Open Pit) Indicated copper .06 % 71,904,900 40,162,990 Yes Yes 0.25g/t AuEq
2013 Nucleus (Open Pit) Inferred gold .417 g/t 59,071,068 24,659,000 Yes Yes 0.25g/t AuEq
2013 Nucleus (Open Pit) Inferred silver 1.5 g/t 59,071,068 89,117,600 Yes Yes 0.25g/t AuEq
2013 Nucleus (Open Pit) Inferred silver 1.5 g/t 59,071,068 89,117,000 Yes Yes 0.25g/t AuEq
2013 Nucleus (Open Pit) Inferred copper .04 % 59,071,068 22,583,950 Yes Yes 0.25g/t AuEq
2011 Nucleus (Open Pit) Inferred gold .47 g/t 41,448,797 19,499,400 Yes Yes 0.4g/t AuEq
2011 Nucleus (Open Pit) Inferred silver .98 g/t 41,448,797 40,646,000 Yes Yes 0.4g/t AuEq
2011 Nucleus (Open Pit) Indicated gold .7 g/t 48,498,512 34,076,000 Yes Yes 0.4g/t AuEq
2011 Nucleus (Open Pit) Indicated silver .9 g/t 48,498,512 43,497,000 Yes Yes 0.4g/t AuEq
2011 Nucleus (Open Pit) Indicated copper .06 % 48,498,512 30,732,065 Yes Yes 0.4g/t AuEq
2011 Nucleus (Open Pit) Inferred copper .07 % 41,448,797 28,134,513 Yes Yes 0.4g/t AuEq
2010 Nucleus- total low and high grade (Open Pit) Inferred gold .87 g/t 35,820,842 31,242,100 Yes Yes 0.4g/t Au
2009 Nucleus (Open Pit) Inferred gold .63 g/t 36,210,000 22,798,000 Yes Yes 0.4g/t Au
2009 NUCLEUS (OPEN PIT) Inferred gold .5 g/t 67,570,000 No Yes 0.3g/t Au
1989 NUCLEUS (OPEN PIT) Historical Estimate gold 3.16 g/t 211,925 No No Unknown

Drill Core at YGS Core Library

Number Property Year Drilled Core Size Photos Data
N84-1 Nucleus 1984 HQ 0 4
N84-2 Nucleus 1984 HQ 0 4
N84-2A Nucleus 1984 HQ 0 0
N84-3 Nucleus 1984 HQ 0 4
D-70-5 Revenue 1970 NQ 0 1
D-70-6 Revenue 1970 NQ 0 1

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