General Information
Secondary Commodities: gold
Deposit Type(s): Epithermal Au-Ag-Cu: High Sulphidation
Location(s): 62.0418 N, -137.2433 W
NTS Mapsheet(s): 115I03
Location Comments: Location provided by Rockhaven Resources 2019
Hand Samples Available at YGS: No
Capsule
Work History
Staked as Dows cl 1-16 (YB7687) in August 1987 by E. Curley and optioned to Noranda Exploration Company Ltd., which explored with geochemical, magnetic and IP surveys and trenching in 1988. In 1988, Noranda staked Dows cl 17-72 (YB12755) and cl 73-118 (YB13055).
In early 1995, Curley optioned the property to Atna Resources Ltd. which carried out a trenching program at the Sked occurrence (MINFILE occurrence 115I 147) later in the summer. During the trenching program BYG Resources, owners of the nearby Mount Nansen Mine, mapped and sampled the trenches. In the fall of 1995, Conquest Yellowknife Resources Ltd. (a BYG affiliated company) optioned a 50% interest in the claims from Atna and staked Dows cl 119-124 (YB66234) in the northwest corner of the claim block.
Strategic Metals Corp. staked the Sked claims 1-30 in 2009 and 31-36 in 2010 and purchased the nearvy Desk claims in 2010. Wolverine Minerals Corp. optioned the Sked and Desk claims in 2010 and a small soil sampling program was conducted. A follow-up soil sampling program was conducted in 2011.
In 2013, the Sked and Desk claims reverted to Strategic Metals. Rockhaven Resources acquired the Desk and Sked claims via a property-swap transaction with Strategic in 2015.
In 2016, Rockhaven carried out soil and rock geochemistry at the Sked occurrence. A ground IP and magnetic geophysical survey was carried out over the claims including the Dows occurrence by Rockhaven in 2017.
Regional & Property Geology
The occurrence is located in the Dawson Range within Yukon-Tanana Terrane (YTT). The rocks of the YTT in this region consist of Early Mississipian metamorphic rocks separated into meta-sedimentary and meta-igneous suites (Stroshein, 1998). The meta-sedimentary suite consists of micaceous quartz-feldspar gneiss, schist and quartzite of the Nasina Assemblage. The meta-igneous package is comprised of biotite-hornblende feldspar gneiss and coarse-grained granodiorite orthogneiss with lesser amphibolite.
These basement rocks are cut by numerous plutonic and volcanic events from the Cretaceous, including:
1. Mid-Cretaceous Mount Nansen Suite andesite, felsic lapilli tuffs, basaltic to latite volcanic rocks; and quartz feldspar porphyry, dacite, latite, and quartz monzonite porphyritic hypabyssal rocks,
2. Mid-Cretaceous Whitehorse granodiorite; and,
3. Late Cretaceous feldspar porphyry dykes.
Outcrop on the property is scarce and consists of Paleozoic YTT schist, limestone and quartzite with small outcroppings of local Mount Nansen Group volcanics.
Mineralization & Results
Gold occurs in chalcedonic quartz-sulphide veins and wide zones of silicification along the margins of manganese-stained and clay-altered quartz-feldspar porphyry dykes. These zones reportedly strike 300° and dip 60-65° to the west. The veins and dykes cut Yukon Tanana metasedimentary rocks consisting of mainly limestone, schist and quartzite.
A small sampling program by Strategic in 2010 returned background to anomalous gold (up to 23 ppb Au), lead (up to 14 ppm Pb), zinc (up to 85 ppm Zn), arsenic (up to 181 ppm As) and copper (up to 140 ppm Cu). Soil sampling in 2011 returned up to 44 ppb Au, 153 ppm Cu, 68 ppm As, and 116 ppm Zn.
Staked as Dows cl 1-16 (YB7687) in August 1987 by E. Curley and optioned to Noranda Exploration Company Ltd., which explored with geochemical, magnetic and IP surveys and trenching in 1988. In 1988, Noranda staked Dows cl 17-72 (YB12755) and cl 73-118 (YB13055).
In early 1995, Curley optioned the property to Atna Resources Ltd. which carried out a trenching program at the Sked occurrence (MINFILE occurrence 115I 147) later in the summer. During the trenching program BYG Resources, owners of the nearby Mount Nansen Mine, mapped and sampled the trenches. In the fall of 1995, Conquest Yellowknife Resources Ltd. (a BYG affiliated company) optioned a 50% interest in the claims from Atna and staked Dows cl 119-124 (YB66234) in the northwest corner of the claim block.
Strategic Metals Corp. staked the Sked claims 1-30 in 2009 and 31-36 in 2010 and purchased the nearvy Desk claims in 2010. Wolverine Minerals Corp. optioned the Sked and Desk claims in 2010 and a small soil sampling program was conducted. A follow-up soil sampling program was conducted in 2011.
In 2013, the Sked and Desk claims reverted to Strategic Metals. Rockhaven Resources acquired the Desk and Sked claims via a property-swap transaction with Strategic in 2015.
In 2016, Rockhaven carried out soil and rock geochemistry at the Sked occurrence. A ground IP and magnetic geophysical survey was carried out over the claims including the Dows occurrence by Rockhaven in 2017.
Regional & Property Geology
The occurrence is located in the Dawson Range within Yukon-Tanana Terrane (YTT). The rocks of the YTT in this region consist of Early Mississipian metamorphic rocks separated into meta-sedimentary and meta-igneous suites (Stroshein, 1998). The meta-sedimentary suite consists of micaceous quartz-feldspar gneiss, schist and quartzite of the Nasina Assemblage. The meta-igneous package is comprised of biotite-hornblende feldspar gneiss and coarse-grained granodiorite orthogneiss with lesser amphibolite.
These basement rocks are cut by numerous plutonic and volcanic events from the Cretaceous, including:
1. Mid-Cretaceous Mount Nansen Suite andesite, felsic lapilli tuffs, basaltic to latite volcanic rocks; and quartz feldspar porphyry, dacite, latite, and quartz monzonite porphyritic hypabyssal rocks,
2. Mid-Cretaceous Whitehorse granodiorite; and,
3. Late Cretaceous feldspar porphyry dykes.
Outcrop on the property is scarce and consists of Paleozoic YTT schist, limestone and quartzite with small outcroppings of local Mount Nansen Group volcanics.
Mineralization & Results
Gold occurs in chalcedonic quartz-sulphide veins and wide zones of silicification along the margins of manganese-stained and clay-altered quartz-feldspar porphyry dykes. These zones reportedly strike 300° and dip 60-65° to the west. The veins and dykes cut Yukon Tanana metasedimentary rocks consisting of mainly limestone, schist and quartzite.
A small sampling program by Strategic in 2010 returned background to anomalous gold (up to 23 ppb Au), lead (up to 14 ppm Pb), zinc (up to 85 ppm Zn), arsenic (up to 181 ppm As) and copper (up to 140 ppm Cu). Soil sampling in 2011 returned up to 44 ppb Au, 153 ppm Cu, 68 ppm As, and 116 ppm Zn.
Location Map
Last Updated: Nov 2, 2020
Work History
| Year | Work Type | Comment |
|---|---|---|
| 2017 | Ground Geophysics: IP | |
| 2017 | Ground Geophysics: Magnetics | |
| 2016 | Geochemistry: Rock | |
| 2016 | Geochemistry: Soil | |
| 1988 | Ground Geophysics: Magnetics | Also IP survey. |
| 1988 | Trenching: Mechanical | |
| 1988 | Geochemistry: Soil |
Regional Geology - Terrane
Group: Intermontane
Affinity: W Laurentia
Name: Yukon-Tanana
Realm: peri-Laurentian
Regional Geology - Bedrock
Supergroup:
Group/Suite: Finlayson
Formation:
Member:
Terrane: Yukon-Tanana
Period Max: Devonian
Age Max: 365 MA
Period Min: Carboniferous
Age Min: 345 MA
Rock Major: cl-bi-schist/amphibolite/hb-gneiss/ac-pg-cl-bi-schist/pg-ac-cl-schist/phyllite/quartzite/ultramafics
Rock Minor:
Reference: Tempelman-Kluit (1984) - GSC OF 1101
Geological Unit (1M): DMF
Geological Unit (250K): DMF1
Assessment Reports that overlap occurrence
| Report Number | Year | Title | Worktypes | Holes Drilled | Meters Drilled |
|---|---|---|---|---|---|
| 095089 | 2009 | Report on a Geophysical Survey on the Mount Nansen Property and the Tawa Property | Electromagnetic - Airborne Geophysics, Magnetic - Airborne Geophysics |
Related References
| Number | Title | Page(s) | Document Type |
|---|---|---|---|
| YEG1997_Andersen | Geology of the Flex gold-silver vein system, Mount Nansen area, Yukon | Annual Report Paper | |
| YEG1998_20 | A summary report on the geology of the Brown-McDade gold-silver deposit, Mount Nansen mine area, Yukon | Annual Report Paper | |
| YEG1997_14 | Geology and mineral deposits of the Mount Nansen camp, Yukon | 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) |
| Citations |
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