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Occurrence Details


Occurrence Number
105F 002
Occurrence Name
Mobs
Occurrence Type
Hard-rock
Status
Showing


General Information

Secondary Commodities: lead, silver, molybdenum
Aliases: Mchagen-Kelly
Deposit Type(s): Vein Polymetallic Ag-Pb-Zn+/-Au
Location(s): 61.023330 N, -133.665830 W
NTS Mapsheet(s): 105F04
Location Comments: .5 Kilometres
Hand Samples Available at YGS: No

Capsule

Work History

A few quartz claims were staked in this area in 1923 but no records have been found. A 36.6 m adit and several open cuts had been completed here by 1934 when the area was first visited by the GSC.
Restaked as Hazel cl (4572) in Jun/46 by J. Johns, as Sid cl (60741) in Jun/52 by J. Mohagen, and as the Mobs cl (66529) in Aug/53 by M. Baird. Restaked as Wopus cl (77913) in Aug/62 by Mohagen and sold in May/66 to Boswell River ML, which added the Star cl (Y8012) in May/66 and performed hand trenching, mapping, geochem sampling and EM surveys in 1966-68. J. Suits added Hill cl (Y20998) in Sep/67.
Restaked as AG cl (Y75836) in Jul/73 by El Paso Mg & Milling C, which performed mapping and soil sampling in 1973 and 1974, and as Ann cl (YA22802) in Jul/78 by a joint venture between Placer Dev L and Newmont, which performed a geochem survey later in the year.
Restaked as BOS & GE cl (YA48275) in Oct/79 by H. Rail, etc and transferred to a new company, Golden Empire ML, which performed linecutting and trenching in 1980 and 1981 and mapping, geochem sampling and road construction in 1982.
Restaked as Star cl 1-16 (YB66593) by 13744 Yukon Inc in Feb/96.

Capsule Geology

Galena occurs in quartz lenses within a thin (1-2 m) dolomite horizon at the contact between a tuff unit to the south and quartz-sericite schist to the north.
Galena and minor amounts of molybdenite also occur in quartz veins at the contact between a Cretaceous batholith and metasedimentary rocks of unknown age which resemble the Klondike Schist (Permian). The veins are up to 9.2 m wide, and the adit reportedly cut a 4.6 m vein. Three grab samples collected by the GSC assayed 740 to 1566.8 g/t Ag and trace Au.
Soil sampling outlined a number of coincident lead-silver anomalies near a 640 by 37 m area where quartz stockwork comprises about 10% of the rock. Assays of 62 rock samples collected by El Paso averaged 68.57 g/t Ag and 0.8% Pb.

References

13744 YUKON INC, Feb/97. Assessment Report *#093565 by S. Traynor.

BOSWELL RIVER MINES LTD, 1966. Prospectus Report by P.H. Sevensma.

EL PASO MINING AND MILLING COMPANY, 1974. Assessment Report *#060856 by B. Taylor.

GEOLOGICAL SURVEY OF CANADA Paper 66-31, p. 60-62.

GEOLOGICAL SURVEY OF CANADA Memoir 203. p. 23-24.

MINERAL INDUSTRY REPORT 1974, p. 149.

WHITEHORSE MINING RECORDER, 1923. Annual Report.

Location Map

Last Updated: Jun 19, 2018

Work History

Year Work Type Comment
1982 Development, Surface: All Weather Road
1982 Geochemistry: Soil Also rock sampling.
1982 Geology: Bedrock Mapping
1981 Trenching
1980 Trenching
1978 Geochemistry: Soil Also rock sampling.
1974 Geochemistry: Soil
1974 Geology: Bedrock Mapping
1973 Geochemistry: Soil
1973 Geology: Bedrock Mapping
1968 Geology: Bedrock Mapping
1968 Ground Geophysics: EM
1968 Trenching: Hand
1967 Geochemistry: Soil Also rock.
1967 Geology: Bedrock Mapping
1967 Ground Geophysics: EM
1967 Trenching: Hand
1966 Geochemistry: Rock Also soil sampling.
1966 Geology: Bedrock Mapping
1966 Ground Geophysics: EM
1966 Trenching: Hand
1934 Development, Underground: Drifting/Raising A 36.6 m long adit dug.
1934 Trenching: Hand Several trenches dug.

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: quartzite/qt-ms-schist
Rock Minor: conglo/grit
Reference: Gordey & Stevens (1994) - GSC OF 2886
Geological Unit (1M): DMF
Geological Unit (250K): DMF3

Assessment Reports that overlap occurrence

Report Number Year Title Worktypes Holes Drilled Meters Drilled
094937 2007 Assessment Report, Helicopter Magnetic and Radiometric Survey for It's Your Nickel Exploration Ltd. on the Turn River Uranium Project Gamma-Ray Spectrometry - Airborne Geophysics, Magnetic - Airborne Geophysics
093565 1996 Evaluation Survey of the Star 1-16, Mar 1-22 and Charm 1-16 Claims Rock - Geochemistry
060856 1974 Report on the Geology and Geochemistry of the AG 1-6 Mineral Claims Soil - Geochemistry, Bedrock Mapping - Geology
060003 1969 Geochemical Survey, Assessment Work Report on theNW Claim group Silt - Geochemistry, Soil - Geochemistry

Related References

Number Title Page(s) Document Type
ARMC014332 Summary report on Mobs group - Boswell River area Report
Citations

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