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Occurrence Details


Occurrence Number
115O 078
Occurrence Name
Jen
Occurrence Type
Hard-rock
Status
Anomaly


General Information

Secondary Commodities: copper, silver, molybdenum, lead
Deposit Type(s): Unknown
Location(s): 63.833330 N, -139.174440 W
NTS Mapsheet(s): 115O14
Location Comments: 1 Kilometres
Hand Samples Available at YGS: No

Capsule

Work History

Originally staked as the Little Alta (6710) and Mountaineer (6325) by J.H. Russell and J. Knox in June, 1903 and July, 1902, and explored by shallow shafts.

Re-staked as Jen cl (Y65548) in July, 1972 by Sullivan & Rogers and optioned to Conwest EL, which carried out mapping and geochemical sampling later in the year and bulldozer trenching in 1973.

R. Truswell re-staked the southeast side as Hardrock cl (YB17763) in September, 1988 and performed geophysical surveys in 1989. Truswell re-staked the Hardrock cl (YB40874) in June, 1992 and performed 24.3 m of drilling and minor bulldozer trenching and stripping. Truswell performed further trenching on the Hardrock cl in June, 1993. In May, 1994 Truswell carried out 1,681 cubic metres of trenching on Hardrock cl 15 (YB38797) which is located about 1 km southeast of anomaly. In August, 1995 Truswell carried out additional stripping on his claims. In December, 1995 Truswell filed assessment work for stripping on Hardrock cl (YB38770).

Re-staked September, 1990 as Quad cl (YB38886) by 8783 Yukon Ltd. W. Hawkes trenched on the Quad cl in September, 1991 and October, 1992. The Cal cl group 1 km to the west (YB30653) were transferred to Kennecott Canada Inc. in May, 1993. 8783 Yukon Ltd stripped and drilled on the Quad 76 etc. cl in September, 1993.

Feminique Apparel L staked Fox cl (YA88403) 3 km to the southwest in January, 1987 and performed churn drilling later in the year.

Hawkes added Golden Hawk (YB41974), OHawk cl (YB41846, YB45672) and Diamond Hawk claims in this area in June, September and October 1993. Hawkes carried out 19,631 cubic metres of trenching and road work on the OHawk claims in fall of 1993.

In March, 1994 R. Demarco staked the Tom-A-Hawk cl 1-50 (YB47927) 2.5 km southwest of the occurrence. Demarco carried out trenching and drilling on the Golden Hawk claims in November, 1994.

W. Hawkes apparently re-staked the occurrence as part of a block of WJR claims (non-consecutively numbered, lowest number = 1, YB67546) in October, 1995. At the same time, Truswell staked Hardrock cl 7-9 & 11 (YB67627) in the same general area. In June, 1996 Truswell carried out 4,291 cubic metres of stripping on Hardrock cl 18 (YB38797).

Capsule Geology

The area is underlain by quartz and feldspar augen-bearing quartz-muscovite schist (unit Psa) of the Permian Klondike Schist Assemblage. The schist unit is overlain by a small patch of hornblende-biotite-phyric andesite (unit lKva) and cut by a narrow 1200 -trending dyke of quartz-feldspar porphyry (unit eTqfp). A newspaper account in 1903 reported that a quartz vein at least 2.5 m wide had been discovered on the Little Alta claim. No assays are available from this occurrence.

The Jen claims were originally staked over an intense, isolated aeromagnetic anomaly. The aeromagnetic anomaly likely reflects the andesite, although float of a strongly magnetic, magnetite-bearing silicified schist was found in one bulldozer trench.

Soil sampling by Conwest detected scattered anomalous values of Cu, Ag, Pb and Mo in soils and a generally higher As background than is found elsewhere in the Klondike.


 

Location Map

Last Updated: Jul 15, 2022

Work History

Year Work Type Comment
2019 Remote Sensing: LIDAR
1996 Other Truswell carried out 4 291 m3 of stripping on Hardrock claim 18 (YB38797).
1993 Development, Surface: All Weather Road
1993 Other
1993 Trenching
1992 Trenching
1991 Trenching
1973 Trenching: Mechanical
1972 Geology: Bedrock Mapping
1972 Other
1903 Other
1902 Other

Regional Geology - Terrane

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


Regional Geology - Bedrock

Supergroup:
Group/Suite: Carmacks
Formation: Little Ridge/Casino
Member:
Terrane:
Period Max: Cretaceous
Age Max: 73 MA
Period Min: Cretaceous
Age Min: 68 MA
Rock Major: basalt/breccia/andesite/porphyry/dacite/trachyte
Rock Minor: conglomerate/agglomerate
Reference: Mortensen (1996) - YGS OF 1996-1(G)
Geological Unit (1M): uKC
Geological Unit (250K): uKC1

Assessment Reports that overlap occurrence

Report Number Year Title Worktypes Holes Drilled Meters Drilled
097066 2015 Report on Diamond Drilling, Prospecting, and Ground Magnetics on the Lone Star Property, Dawson Mining District, Yukon Territory, Canada Diamond - Drilling, Rock - Geochemistry, Magnetics - Ground Geophysics 19 1369.30
096220 2011 Surface Work 2011 on the Quartz Property Soil - Geochemistry, Soil - Geochemistry
094579 2005 Diamond Drilling, Geological Mapping, Rock and Soil Geochemistry, Trenching and Bulk Sampling on the Lone Star Property Diamond - Drilling, Drill Core - Geochemistry, Rock - Geochemistry, Soil - Geochemistry, Detailed Bedrock Mapping - Geology, Bulk Sample - Lab Work/Physical Studies, Prospecting - Other, Backhoe - Trenching, Mechanical - Trenching 32 5429.40
060149 1972 Geological and Geochemical Report Yukon Quartz Mineral Claims Silt - Geochemistry, Soil - Geochemistry

Related References

Number Title Page(s) Document Type
1996-1(G) Geological Compilation Maps of the Northern Stewart River Area, Klondike and Sixtymile Districts (115N/15, 16, 115O/13, 14 and Parts of 115O/15, 16) Open File (Geological - Bedrock)
Citations
Debicki, R.L., 1984. Bedrock geology and mineralization of the Klondike area (west). Exploration and Geological Services Division, DIAND, Open File Report.
Sullivan and Rogers, 1973. Report by G.C. Carlson.

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