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Occurrence Details


Occurrence Number
115I 058
Occurrence Name
Tinta Hill
Occurrence Type
Hard-rock
Status
Deposit


General Information

Primary Commodities: copper, gold, zinc, silver, lead
Aliases: Freegold
Deposit Type(s): Vein Polymetallic Ag-Pb-Zn+/-Au
Location(s): 62.287240 N, -136.9977 W
NTS Mapsheet(s): 115I07
Location Comments: Coordinates provided by Triumph Gold Corp. in 2020.
Hand Samples Available at YGS: Yes

Capsule

Work History

Originally discovered in 1930 and staked in 1931 by G. McDade, who explored with trenching and shallow shafts from 1931-1932. Re-staked by W. Teare as Tenderfoot cl (39142) in June 1937 and re-staked as Tenderfoot cl (4208) in November 1940. Teare explored with two shafts (15 m and 11 m deep) and a 16 m adit.

Re-staked as May cl 1-12 and June cl 1-4 (74197) in May 1959 by Conwest Exploration Company Ltd., which carried out trenching that year; staked May cl 13-14 (74218) in June 1959; and drilled 5 holes (410 m) in 1960. Canol Metal Mines Ltd tied on Sno cl 1-24 and North cl 1-16 (74721) in April 1960.

Re-staked as Tinta cl 1-4 (Y10054) in August 1966 by Canex Placer Ltd., which carried out grid soil geochemical sampling, EM geophysical surveying and staked Tinta cl 5-8 (Y20626) in November 1966. The property was optioned to Silgold Mines Ltd. in 1968, which resampled the existing trenches and staked Tinta cl 9-16 (Y24745), Tinta cl 17-18 (Y25329) and Tinta cl 19-26 (Y26024) in May, July and September 1968, respectively. This option was transferred to Coin Canyon Mines Ltd., which carried out geochemical soil sampling and bulldozer trenching from 1969 to 1972.

Optioned in September 1973 by Exeter Mines Ltd., which carried out grid geochemical sampling, EM geophysical surveying and drilled 4 holes (343.2 m) that year; drilled 21 holes (1,341.4 m) in July and August 1974; staked Tinta cl 9, 11-26 (Y76840) in August 1974; changed its name to Tinta Hill Mines Ltd in 1975; and drilled 3 holes (313.6 m) in 1976.

The claims then reverted to Placer Development Ltd. and were optioned in 1979 by a joint venture between Silver Tusk Mines Ltd. and Panther Mines Ltd., which completed 516 m of drifting and crosscutting in the No. 1 Adit in 1980 and 1981, and another 457 m in 1981 in the No. 2 Adit situated 366 m west and 45.7 m lower in elevation than No. 1. Additional trenching was carried out in 1986 by the joint venture and in 1987 by International Consolidated Platinum Ltd. under a separate joint venture agreement.

Mill City Gold Inc. optioned the property and carried out reconnaissance geochemical sampling and prospecting in November 1988 and drilled 8 holes (1,143.6 m) in December 1988. Silver Tusk carried out road work in 1989; trenched in 1991, 1992 and 1994; and staked Tinta cl 9-72 (YA48246) in October 1994.

In November 1998, Midnight Mines Ltd. (B. Harris) began re-staking lapsing sections of the property as various Tinta and Hill claims (YC09166). From 2000 to 2001, Midnight Mines carried out prospecting and geochemical sampling. The company’s acquisition of the property was completed with the re-staking of the last of the original Tinta claims as Tinta cl 1-2 (YC19653) in August 2002 and Tinta cl 11-12 (YC19666) in September 2002. During this period, GPS surveying and mapping of the various roads, drill collars, trenches and underground working present on the property was undertaken and an existing baseline was partially reconstructed. In 2004, Midnight Mines performed rock geochemistry and prospecting.

In 2007, Northern Freegold drilled 12 holes for a total of 2200 m, which confirmed the extension of the vein system at depth and along strike. The company drilled 17 holes for a total of 3807 m in 2008.

A technical report by Fonseca and Giroux dated August 31, 2009 covers all of Northern Freegold's Freegold Mountain property and includes an inferred resource estimate for the Tinta Hill deposit.

Triumph Gold acquired Northern Freegold Resources in 2015 and the property that includes the Tinta Hill occurrence is now termed the Freegold Mountain Project. An updated inferred assessment resource was determined for Tinta Hill in 2015.

Triumph Gold performed magnetic and VLF-EM ground geophysics and soil sampling in 2016; soil sampling and mechanical trenching in 2017; and mechanical trenching in 2019.

Regional & Property Geology

The occurrence 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 in the area are cut by numerous plutonic and volcanic events from the Mesozoic (Murray & Friend, 2018), including:
1. Early Jurassic Long Lake monzonite and granodiorite plutonic suites;
2. Mid-Cretaceous Mount Nansen Suite andesite to diorite;
3. Mid-Cretaceous Whitehorse granodiorite, quartz monzonite and monzodiorite;
4. Late Cretaceous Casino quartz monzonite;
5. Late Cretaceous Prospector Mountain syenite;
6. Late Cretaceous Carmacks basalt and andesite; and,
7. 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

Mineralization consists of northwest-trending, sub-vertical quartz-carbonate veins containing galena and sphalerite with minor tetrahedrite and chalcopyrite. Th emain vein occurs in a vertical shear zone up to 30.5 m wide which cuts Early Jurassic granodiorite to quartz monzonite of the Aishihik/Long Lake Suite. The main vein zone has been characterized discontinuously over 3.5 km along strike with individual veins varying from 0.9 to 1.6 m. Alteration envelopes around veining consists of intense kaolinite extending a few metres and a broader muscovite and illite envelope locally surrounding mineralization (AR 097175).

The Conwest drilling, which explored the vein for a length of 366 m and a depth of 107 m, indicated fairly persistent mineralization over an average width of 1.7 m and as much as 3 m of disseminated pyrite and chalcopyrite in the walls.

The 1973-1974 drilling indicated an average grade of 185.1 g/t Ag, 2.74 g/t Au, 4.7% Pb, 6.0% Zn, 0.4% Cu and 0.05% Cd and showed that higher grade zones are erratically distributed

The No. 1 Adit intersected 94 m of vein grading 6.8 g/t Au, 164.6 g/t Ag, 1.0% Cu, 5.6% Pb and 13.2% Zn over an average width of 0.76 m. The No. 2 Adit intersected 31 m grading 7.54 g/t Au, 120 g/t Ag, 0.8% Cu, 1.3% Pb and 3.8% Zn over an average width of 0.6 m, plus 35.7 m grading 27.8 g/t Au, 696.0 g/t Ag, 3.6% Cu, 6.5% Pb and 2.8% Zn over an average width of 0.53 m.

In 1980, Silver Tusk Mines reported reserves of 764,757 tonnes grading 6% Zn, 4.71% Pb, 0.35% Cu, 2.57 g/t Au and 183.2 g/t Ag.

The 1988 drilling was completed over a 381 m distance along strike of the known mineralized vein structure. Mineralization was observed in all eight drill holes and the core was extensively sampled, but analytical results were never filed.

The GPS surveying and mapping carried out in 2002 served to accurately relocate existing infrastructure in the area and provided the basis for the preparation of a compilation basemap to be used during future exploration of the property.

Grab samples taken in 2004 from the adits returned up to 43.5 g/t Au, 2270 ppm Ag, 7.49% Cu, 8.86% Pb and 4.66% Zn.

Diamond drilling was carried out in 2007 and 2008 that intersected mineralization in holes: TH07-08, which returned 1.35 g/t Au, 29 g/t Ag, 0.12% Cu, 0.17% ppm Pb and 0.12% ppm Zn over 4 m; TH08-13, which returned 0.74 g.t Au, 124 g/t Ag, 0.41% Cu, 0.20% Pb and 0.45% Zn over 0.2 m; and TH08-14, which returned 0.42 g/t Au, 9.26 g/t Ag, 0.04% Cu, 0.38% Pb and 0.49% Zn. 

Location Map

Last Updated: Dec 16, 2020

Work History

Year Work Type Comment
2020 Studies: Resource Estimate Davis and Sim, 2020.
2019 Trenching: Mechanical One trench totaling 88 m.
2017 Geochemistry: Soil
2017 Trenching: Mechanical Six trenches.
2016 Geochemistry: Soil
2016 Ground Geophysics: Magnetics And VLF-EM.
2015 Studies: Resource Estimate Campbell et al., 2015.
2009 Studies: Resource Estimate Fonseca and Giroux, 2009.
2008 Drilling: Diamond Seventeen holes totaling 3,807 m.
2007 Drilling: Diamond Twelve holes totaling 2,200 m.
2004 Geochemistry: Rock Grab samples.
2004 Other: Prospecting
2002 Other: Surveying GPS surveying and mapping of existing infrastructure was also carried out.
2002 Geology: Bedrock Mapping
2001 Geochemistry: Soil
2001 Other: Prospecting
2000 Geochemistry: Soil
2000 Other: Prospecting
1994 Development, Surface: Access Road
1994 Trenching: Mechanical
1992 Trenching: Mechanical
1991 Trenching: Mechanical
1989 Development, Surface: Access Road
1988 Drilling: Diamond Eight holes totaling 1,150 m.
1987 Trenching: Mechanical
1986 Trenching: Mechanical
1980 Development, Underground: Drifting/Raising Drifting of adits #1 and #2.
1976 Drilling: Diamond Three holes totaling 313.64 m.
1974 Drilling: Diamond Twenty-one holes totaling 1,341.4 m.
1973 Drilling: Diamond Four holes totaling 343.2 m.
1973 Geochemistry: Soil
1973 Ground Geophysics: EM
1973 Trenching: Mechanical
1972 Geochemistry: Soil
1972 Trenching: Mechanical
1971 Geochemistry: Soil
1971 Trenching: Mechanical
1970 Geochemistry: Soil
1970 Trenching: Mechanical
1969 Geochemistry: Soil
1969 Trenching: Mechanical
1966 Geochemistry: Soil
1966 Ground Geophysics: EM
1960 Drilling: Diamond Five holes totaling 409.96 m.
1959 Trenching
1940 Development, Underground: Shaft Development Two shafts (50' and 35' deep) and a 52 ft adit.
1932 Trenching
1931 Development, Underground: Shaft Development Small shafts dug.
1931 Trenching

Regional Geology - Terrane

Group: Intermontane
Affinity: W Laurentia
Name: Stikinia
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: granodiorite
Rock Minor:
Reference: Allan & Friend (2018) - YGS OF 2018-2
Geological Unit (1M): EJL
Geological Unit (250K): EJgL

Assessment Reports that overlap occurrence

Report Number Year Title Worktypes Holes Drilled Meters Drilled
097175 2017 Drilling and Geochemical Report on the Freegold Mountain Project Diamond Drilling, Rock Geochemistry, Soil Geochemistry, Mechanical Trenching 18 7615
095211 2008 2008 Drilling Assessment Report on the TINTA HILL Zone Diamond Drilling 3 655.34
094813 2007 2007 Drilling Assessment Report on the TINTA HILL Zone-FREEGOLD MOUNTAIN Project All Weather Road Development, Surface, Diamond Drilling, Drill Core Geochemistry 11 2203
094745 2006 2006 Geophysical Assessment Report on the Freegold Mountain Property Electromagnetic Airborne Geophysics, Magnetic Airborne Geophysics
094570 2004 Geological and Geochemical Assessment Report on the TINTA HILL Project Rock Geochemistry, Property Evaluation Other, Prospecting Other
094406 2002 2002 Assessment Report on the TINTA HILL Property Bedrock Mapping Geology, Surveying Other
092750 1988 1988 Diamond Drilling Report on the TINTA HILL Property Diamond Drilling 8 1143.60

Related References

Number Title Page(s) Document Type
ARMC020134 1981 progress report and mineral inventory for the Tinta Hill deposit, Y.T. optioned to Silver Tusk Mines Ltd. and Panther Mines Ltd. Report
ARMC020135 Geological report on the Tinta Hill property, Whitehorse Mining Division, Y.T. for Silver Tusk Mines Ltd. - Assays, drill logs, and drill hole section maps Report
ARMC020136 A valuation of the Tinta Hill deposit for International Platinum Ltd. - January 1988 Report
062119 Interim Report on the TINTA HILL Property Assessment Report
097175 Drilling and Geochemical Report on the Freegold Mountain Project Assessment Report
061157 Geological Report on the TINTA HILL Property Assessment Report
060202 Report on the TINTA Group of Claims Assessment Report
094406 2002 Assessment Report on the TINTA HILL 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
1987-2(G) Geology of Mt. Nansen (115I/3) and Stoddart Creek (115I/6), Dawson Range, Central Yukon Open File (Geological - Bedrock)
061046 Geological Report on the TINTA HILL Property Assessment Report
092750 1988 Diamond Drilling Report on the TINTA HILL Property Assessment Report
092747 1988 Reconnaissance Survey TINTA HILL Claim Group 5 Assessment Report
062086 Geological Report on the TINTA HILL Property Assessment Report
062029 Geological Report on the TINTA HILL Property Assessment Report
2018-2 Bedrock geological map of the Mount Freegold district, Dawson Range Open File (Geological - Bedrock)
Citations
Campbell, J. et al., February 28, 2015. Technical Report (NI 43-101) on the Freegold Mountain Project, Yukon, Canada 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 (NI 43-101) on the Freegold Mountain Property, Dawson Range, Yukon, for Northern Freegold Resources Ltd.
Triumph Gold Corp., Aug/2020. Assessment Report #097397 by J.R. Halle.
Triumph Gold Corp., News Release. 27 Sep/2020.
Last Updated: Dec 16, 2020

Resource/Reserve

Year Zone Type Commodity Grade Tonnage Amount Reported Amount 43-101 Compliant Cut-off
2009 TINTA HILL (UNDERGROUND) Inferred copper .29 % 1,150,000 3,356,583 Yes Yes 0.5g/t Au
2009 TINTA HILL (UNDERGROUND) Inferred gold 1.88 g/t 1,150,000 2,177,200 Yes Yes 0.5g/t Au
2009 TINTA HILL (UNDERGROUND) Inferred lead .9 % 1,150,000 10,341,905 Yes Yes 0.5g/t Au
2009 TINTA HILL (UNDERGROUND) Inferred silver 49.34 g/t 1,150,000 56,608,000 Yes Yes 0.5g/t Au
2009 TINTA HILL (UNDERGROUND) Inferred zinc 1.51 % 1,150,000 17,372,586 Yes Yes 0.5g/t Au
1980 TINTA HILL (UNDERGROUND) Historical Estimate copper .35 % 843,000 No No Unknown
1980 TINTA HILL (UNDERGROUND) Historical Estimate gold 2.57 g/t 843,000 No No Unknown
1980 TINTA HILL (UNDERGROUND) Historical Estimate lead 4.71 % 843,000 No No Unknown
1980 TINTA HILL (UNDERGROUND) Historical Estimate silver 183.2 g/t 843,000 No No Unknown
1980 TINTA HILL (UNDERGROUND) Historical Estimate zinc 6 % 843,000 No No Unknown

Drill Core at YGS Core Library

Number Property Year Drilled Core Size Photos Data
TH-88-01 Tinta Hill 1988 NQ 4 2
TH-88-02 Tinta Hill 1988 NQ 2 2
TH-88-02A Tinta Hill 1988 NQ 6 2
TH-88-03 Tinta Hill 1988 NQ 4 2
TH-88-04 Tinta Hill 1988 NQ 4 2
TH-88-05 Tinta Hill 1988 NQ 2 2
TH-88-06 Tinta Hill 1988 NQ 8 2
TH-88-07 Tinta Hill 1988 NQ 10 2

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