Find publications, data and maps managed by the
Yukon Geological Survey

Occurrence Details

Occurrence Number
115I 182
Occurrence Name
Occurrence Type
Drilled Prospect

General Information

Secondary Commodities: gold, antimony
Aliases: Freegold
Deposit Type(s): Epithermal Au-Ag: Low Sulphidation
Location(s): 62.253750 N, -137.0531 W
NTS Mapsheet(s): 115I06
Location Comments: Coordinates provided by Triumph Gold in 2020.
Hand Samples Available at YGS: No


Work History

Originally staked in the early 1930s as Whale cl by J.H. Carpenter and W. Forbes, who trenched until 1937. Re-staked as Free cl 1-32 (Y44182) in November 1969 by Tanzilla Exploration Ltd., which carried out geological mapping and silt and soil sampling in 1970.

Re-staked as Gnat cl 73-100 (YA25004) in August 1979 by Esperanza Exploration Ltd., which sold its interest to Arctic Red Resources Corporation. Arctic Red explored mainly west of the Whale occurrence.

Re-staked as Goldy cl 1-20 (YA81524) in March 1984 by Yukon Revenue Mines Ltd., which carried out chip sampling and trenching in 1985 and optioned the property to Durham Resources Ltd. in December 1985. R.A. Granger tied on Brad A cl 1-4 fr (YA93124) and Dur cl 1-22 (YA94623) to the southeast in 1985 and 1986.

Durham Resources staked Goldy cl 22-31 (YA93001) in 1986; carried out geological mapping and geochemical sampling in 1986 and 1987; and bulldozer trenching in 1987. The company was subsequently renamed Dominion Explorers Inc.

Rea Gold Corporation (60%) and Verdstone Gold Corporation (40%) optioned the claims in 1988 and carried out excavator trenching, geochemical rock sampling and drilling of 14 diamond drill holes (1130.1 m). The Goldy, Brad and Dur claims were transferred to Dominion Explorers Inc. in July 1992 and transferred back to Yukon Revenue Mines Ltd in March 1996.

Re-staked as Goldy cl 1-24 (YC18716) in June 2000 by Midnight Mines Ltd (B. Harris), who carried out prospecting, as well as rock and soil geochemistry in 2000 and rock geochemistry in 2002 and 2004.

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 Goldy occurrence. Northern Freegold carried out drilling of 8 diamond drill holes (1510.7 m) in 2008 and mechanical trenching and chip sampling in 2013.

Triumph Gold acquired Northern Freegold Resources in 2015 and the property that includes the Goldy 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).

This Goldy zone lies along the contact of the Early Jurassic Big Creek syenite and Paleozoic granitic and granodioritic gneisses of the Simpson Range (Allen & Friend, 2018; AR 092587).

Mineralization & Results

The northeast-striking Goldy zone, a large zone of silicification, alteration and disseminated sulfides lies 700 m southeast of the Whale vein (MINFILE occurrence 115I 112). The Goldy zone is characterized by epithermal and breccia hosted sulphide mineralization. The highest gold grades are associated with dark grey siliceous veins and breccias displaying multiple episodes of veining and brecciation. Mineralization is present as “chalcedony-arsenopyrite ± pyrite within veins and breccias and is observed as fine-grained pyrite-arsenopyrite+/-gold replacement of mafic minerals within igneous rocks” (AR 095058; AR 096643).

Several areas with anomalous gold soil geochemical values occur on the claims, with values ranging up to 980 ppb Au in an area 350 by 300 m. Assays from trenches ranged up to 1.61 g/t Au over 43.9 m. The best intersections from the 1988 drilling returned 7.5 g/t Au over 2.0 m (Hole 88 G-13); and 4.6 g/t Au over 6 m (Hole 88 G-4) (AR 091893; AR 092104).

Midnight Mines’ work in 2001 served to relocate old workings and confirm previous values and was carried out as part of a compilation report prepared for assessment on the Dart-Goldy property. Prospecting further to the east in 2002 discovered untrenched outcroppings of granitic and granodioritic gneiss containing pyrite and arsenopyrite. None of the 2002 samples had been submitted for analysis at the time of filing of the report. Resampling of trenches in 2004 returned significant values up to 9.83 g/t Au over 5 m and a grab sample of 5.55 g/t Au.

Diamond drilling performed by Northern Freegold Resources returned a significant intersection of 2.84 g/t Au over 23.7 m, including 21.18 g/t Au over 1.75 m in 08GY-27 (AR 095068).

Sampling of trenches in 2013 returned 1.5 g.t Au in a brecciated, silicified metasediment grab sample containing arsenopyrite and pyrite and 2.47 g/t Au in a 1.0 m chip sample of pyrite and arsenopyrite mineralized silicified metasediment (AR 096643).


Location Map

Last Updated: Jan 4, 2021

Work History

Year Work Type Comment
2013 Geochemistry: Rock Chip sampling of trenches.
2013 Trenching: Mechanical
2008 Drilling: Diamond 8 holes totaling 1510.7 m.
2008 Geochemistry: Drill Core
2006 Airborne Geophysics: Magnetic Property wide survey.
2006 Airborne Geophysics: VTEM Property wide survey.
2004 Geochemistry: Rock Prospecting grab samples.
2002 Geochemistry: Rock Prospecting grab samples.
2000 Geochemistry: Rock Prospecting grab samples.
2000 Geochemistry: Soil
1988 Drilling: Diamond 14 holes totaling 1130.1 m.
1988 Geochemistry
1988 Geochemistry: Rock Chip sampling of trenches.
1988 Trenching: Mechanical
1987 Geochemistry: Rock Prospecting grab samples and trench chip sampling.
1987 Geochemistry: Soil
1987 Geology: Bedrock Mapping
1987 Trenching: Mechanical
1986 Geochemistry: Rock Prospecting grab samples.
1986 Geochemistry: Soil
1986 Geology: Bedrock Mapping
1985 Geochemistry: Rock Chip sampling of trenches.
1985 Trenching: Mechanical
1970 Geochemistry: Soil
1970 Geology: Bedrock Mapping

Regional Geology - Terrane


Regional Geology - Bedrock

Period Max:
Age Max: MA
Period Min:
Age Min: MA
Rock Major:
Rock Minor:
Geological Unit (1M):
Geological Unit (250K):

Related References

Number Title Page(s) Document Type
094555 Geological and Geochemical Assessment Report on the Goldy Property Assessment Report
092587 Summary Report Trenching, Diamond Drilling Goldy, Darb, Brad, Dur Claims Assessment Report
094393 2002 Assessment Report on the Goldy Property Assessment Report
097175 Drilling and Geochemical Report on the Freegold Mountain Project Assessment Report
091893 1986 Summer Geological and Geochemical Program Report-GOLDY and BRAD Claims Assessment Report
094293 2000 Assessment and Compilation Report on the Dart-Goldy 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
092104 1987 Summer Geological and Geochemical Program Report Goldy, Darb, and Brad Claims Assessment Report
2018-2 Bedrock geological map of the Mount Freegold district, Dawson Range Open File (Geological - Bedrock)
095068 2008 Drilling Assessment Report on the GOLDY Zone, FREEGOLD MOUNTAIN Property Assessment Report
094745 2006 Geophysical Assessment Report on the Freegold Mountain Property Assessment Report
096643 2013 Geological and Geochemical Report for the Freegold Mountain Property Assessment Report

Submit Information to Yukon Geological Survey