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Occurrence Details


Occurrence Number
105M 034
Occurrence Name
Cobalt
Occurrence Type
Hard-rock
Status
Deposit


General Information

Primary Commodities: lead, silver
Secondary Commodities: antimony, copper, zinc
Deposit Type(s): Vein Polymetallic Ag-Pb-Zn+/-Au
Location(s): 63.978330 N, -134.971110 W
NTS Mapsheet(s): 105M15
Location Comments: .5 Kilometres
Hand Samples Available at YGS: No

Capsule

Work History

Staked as Eliza Jane, etc cl (14741) in Jul/22 by J. McDonald, D. McLean and W.H. Forbes. Restaked in Aug/26 by H. Sutherland as Wick cl (16212), and in Jun/47 as Ladue cl (56439) by E.W. Runer and C. Brefalt, and sold to Fred Taylor, who shipped about 4.5 tonnes of ore to the United Keno Hill mill in 1949 and explored with trenching until 1956. Adjoining claims in this period include Willie Winkile, etc cl (59134), in Oct/48 by T.J. O'Neill, which were sold to Mayo ML (a Noranda subsidiary) in Aug/49 and transferred in Nov/53 to Maybrun ML; Barnaby Rudge and Alba Madonna cl (59126) in Nov/48 by J. Cox, which were sold in Jan/49 to Yukeno Lead and Silver ML and transferred in Jan/50 to Cons. Yukeno ML and in Feb/51 to Yukeno ML; and PJ cl (61256) in Dec/50 by Yukon E & Dev CL.
Restaked as Tyro cl (80435) in Apr/60 by Conwest; as Rico cl (81212) in Jun/62 by Rio Plata Silver ML; as Pax cl (83528) in Jul/64 by F. Taylor, which were fringed by the R cl (84344) of United Keno Hill in Mar/65. The Pax group was explored by hand trenching in 1964-67 and optioned in 1968 to Silver Christal ML, which conducted more trenching that year. United Keno Hill carried out soil sampling and prospecting in 1965. A 12.2 m adit was driven on the vein, probably in 1947-48 by Brefalt.
Restaked as the Max cl (88726) in Jun/74 by R. Grant, etc and as Silver cl (YA1348) in Oct/75 by J. Strebchuk. The Cobalt Hill No. 1 cl (YA7232) was tied on in Oct/76 by W. Malicky. All of the claims were transferred to Julian Mg Corp in Oct/85.

Capsule Geology

A poorly developed, branching vein striking 330° cuts phyllitic quartzite and greenstone. The vein has been traced along strike about 122 m and contains the occasional erratic 5 to 8 cm wide veinlet of galena. The 4.5 tonnes of hi-graded ore assayed about 2228.5 g/t Ag and 80% Pb.
The R group was staked to cover heavy metal stream anomalies located by GSC Operation Keno (1964) but no new veins were located. Two selected specimens assayed by the GSC returned an average of 1306.3 g/t Ag, 72.5% Pb, 0.1% Zn, 0.04% Cu and 0.41% Sb.

References

GEOLOGICAL SURVEY OF CANADA Map 45-1965.

GEOLOGICAL SURVEY OF CANADA Memoir 357, p. 61.

LACANEX MINING COMPANY LTD, 1970. Assessment Report *#060942 by R.O. Crosby.

ROOTS, C.F., AND MURPHY, D.C., 1992. Geology of Mayo Map Area (105M). Geological Survey of Canada Open File 2483.

Location Map

Last Updated: Sep 15, 2011

Work History

Year Work Type Comment
1968 Trenching: Hand
1967 Trenching: Hand
1966 Trenching: Hand
1965 Geochemistry: Soil
1965 Other
1965 Trenching: Hand
1964 Trenching: Hand
1956 Trenching
1949 Other Amount of work done: 4.5 TONNES High grade ore shipped directly to the United Keno mill.
1948 Other
1947 Other
1922 Other

Regional Geology - Terrane

Group: Ancestral North America
Affinity: W Laurentia
Name: North America - basinal strata
Realm: Laurentia


Regional Geology - Bedrock

Supergroup:
Group/Suite: Earn
Formation: Portrait Lake/Prevost
Member:
Terrane: Laurentia
Period Max: Devonian
Age Max: 385 MA
Period Min: Carboniferous
Age Min: 345 MA
Rock Major: siltstone/sandstone/conglo
Rock Minor: barite/limestone
Reference: Roots (1997) - YGS GM 1997-1
Geological Unit (1M): DME
Geological Unit (250K): DME1

Assessment Reports that overlap occurrence

Report Number Year Title Worktypes Holes Drilled Meters Drilled
096732 2014 Assessment Report Describing Metallurgical Test Pits, Metallurgical Auger Drilling, Geotechnical Auger Drilling, Geotechnical Study, Environmental Baseline Studies, Heritage Evaluation, and Water Quality and Climate Monitoring Surveys Auger - Drilling, Water - Geochemistry, Metallurgical Tests - Lab Work/Physical Studies, Environmental Assessment/Impact - Studies, Geotechnical - Studies, Heritage/Archeological - Studies 9 96.77
095932 2011 Assessment Report on the 2011 Keno-Lighting Geophysical, Trench Mapping, Soil Geochemistry and Diamond Drilling Program Electromagnetic - Airborne Geophysics, Reclamation - Development, Surface, Diamond - Drilling, Rock - Geochemistry, Soil - Geochemistry, Detailed Bedrock Mapping - Geology, Environmental Assessment/Impact - Studies 25 1819.30

Related References

Number Title Page(s) Document Type
ARMC014898 Geophysical report - EM 16 (VLF-EM) eectromagnetic survey - Silver and Spring mineral claims - Yukon Territory Report
Citations

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