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Occurrence Details


Occurrence Number
105G 078
Occurrence Name
Flon
Occurrence Type
Hard-rock
Status
Anomaly


General Information

Deposit Type(s): Unknown
Location(s): 61.6850 N, -131.243610 W
NTS Mapsheet(s): 105G11
Location Comments: .5 Kilometres
Hand Samples Available at YGS: No

Capsule

Work History

Staked as Bev cl 151-162 (Y83640) in Oct/74 following airborne surveys by Hudson Bay Exploration and Development Company Ltd, which conducted ground mag and EM surveys and drilled 2 holes (148.0 m) in 1975.
In July/94 Cominco Ltd restaked the property as the Pick cl 1-36 (YB50959) and carried out a small reconnaissance exploration program later in the year. In Jul/97 Cominco optioned the Pick and other neighbouring claim groups to Pacific Bay Minerals Ltd, which carried out a reconnaissance exploration program later in the summer. The claims were returned to Cominco in Nov/98.

Capsule Geology

The Finlayson Lake region is dominantly underlain by a layered sequence of Devonian to Early Mississippian metavolcanic and metasedimentary rocks of the Yukon-Tanana Terrane (YTT) that have been intruded by Mississippian granitic intrusions and later Jurassic, Cretaceous and Eocene intrusions (Murphy et al., 2001). The YTT is a volcanic-plutonic pericratonic arc assemblage that was strongly deformed and metamorphosed by Late Triassic time. Volcanic-hosted massive sulphide deposits exist at different stratigraphic positions within the YTT including the Fyre Lake deposit (Minfile Occurrence #105G 034) in the Devonian to lower Mississippian(?) Fire Lake mafic metavolcanic unit, the Kudz Ze Kayah deposit (Minfile Occurrence #105G 117) in the Mississippian Kudz Ze Kayah felsic metavolcanic unit, and the Wolverine deposit (Minfile Occurrence #105G 072) within the Lower Mississippian Wolverine Succession.
The occurrence is mapped as being underlain by Upper Devonian metasedimentary rocks (Murphy et al., 2001; unit Dq), with the Fire Lake metavolcanic unit occurring to the east. Volcanism within the sequence was accompanied by the intrusion of Mississippian metaplutonic rocks to the north.
The original Bev claims were staked in an area of deep glacial drift. The 1975 drilling tested geophysical anomalies within Devonian to Mississippian flat-lying, carbonaceous, pyritic schist.
Cominco staked the Pick claims to cover airborne geophysical targets identified during a Cominco survey conducted in early 1994. Follow-up soil sampling revealed no anomalies of interest. Pacific Bay's exploration program failed to identify any significant anomalies or mineralization.

References

BOND, J.D., MURPHY, D.C., COLPRON, M., GORDEY, S.P., PLOUFFE, A., ROOTS, C.F., LIPOVSKY, P.S., STRONGHILL, G., AND ABBOTT, J.G., 2002. Digital compilation of bedrock geology and till geochemistry, northern Finlayson Lake map area, Southeastern Yukon (105G), Exploration and Geological Services Division, Yukon Region, Indian and Northern Affairs Canada, Open File Report, 2002-7(D) and Geological Survey of Canada Open File 4243.

COMINCO LIMITED, Feb/95. Assessment Report #093346 by P.A. MacRobbie.

HUNT, J.A., 2001. Volcanic-associated massive (VMS) mineralization in the Yukon-Tanana Terrane and coeval strata of the North American miogeocline, in the Yukon and adjacent areas. Exploration and Geological Services Division, Yukon Region, Indian and Northern Affairs Canada, Bulletin 12, 107 p.

MINERAL INDUSTRY REPORT 1976, p. 205.

MORTENSEN, J.K., AND JILSON, G.A., 1985. Evolution of the Yukon-Tanana terrane: evidence from southeastern Yukon Territory. Geology, vol. 13, p. 806-810.

MURPHY, D.C., 1998. Stratigraphic framework for syngenetic occurrences, Yukon-Tanana Terrane south of Finlayson Lake: A Progress Report. In: Yukon Exploration and Geology 1997, Exploration and Geological Services Division, Yukon Region, Indian and Northern Affairs Canada, p. 51-58.

MURPHY, D.C., AND PIERCEY, S.J., 1999a. Finlayson project: Geological evolution of Yukon-Tanana Terrane and its relationship to Campbell Range belt, northern Wolverine Lake map area, southeastern Yukon. In: Yukon Exploration and Geology 1998, C.F. Roots and D.S. Emond (eds.), Exploration and Geological Services Division, Indian and Northern Affairs Canada, p.47-62.

MURPHY, D.C. AND PIERCEY, S.J., 1999b. Geological map of parts of Finlayson Lake (105G/7, 8 and parts of 1, 2, and 9) and Frances Lake (parts of 105H/5 and 12) map areas, southeastern Yukon (1:100 000-scale). Exploration and Geological Services Division, Yukon Region, Indian and Northern Affairs Canada, Open File 1999-4.

MURPHY, D.C. AND PIERCEY, S.J., 2000. Syn-mineralization faults and their re-activation, Finlayson Lake massive sulphide district, Yukon-Tanana Terrane, southeastern Yukon. In: Yukon Exploration and Geology 1999, D.S. Emond and L.H. Weston (eds.), Exploration and Geological Services Division, Yukon Region, Indian and Northern Affairs Canada, p. 55-66.

MURPHY, D.C., COLPRON, M., GORDEY, S.P., ROOTS, C.F., ABBOTT, G., AND LIPOVSKY, P.S., 2001. Preliminary bedrock geological map of northern Finlayson Lake area (NTS 105 G) Yukon Territory (1:100 000 scale). Exploration and Geological Services Division, Yukon Region, Indian and Northern Affairs Canada, Open File 2001-33.

MURPHY, D.C., COLPRON, M., ROOTS, C.F., GORDEY, S.P. AND ABBOTT, J.G., 2002. Finlayson Lake Targeted Geoscience Initiative (southeastern Yukon) , Part 1: Bedrock geology. In: Yukon Exploration and Geology 2001, D.S. Emond, L.H. Weston and L.L. Lewis (eds.), Exploration and Geological Services Division, Yukon Region, Indian and Northern Affairs Canada, p. 189-207.

PACIFIC BAY MINERALS LTD, Jul/98. Assessment Report #093865 by F. Moyle and G. Wesa.

PIERCEY, S.J., HUNT, J.A. and MURPHY, D.C., 1999. Lithogeochemistry of meta-volcanic rocks from Yukon-Tanana Terrane, Finlayson Lake region, Yukon: Preliminary results. In: Yukon Exploration and Geology 1998, C.F. Roots and D.S. Emond (eds.), Exploration and Geological Services Division, Indian and Northern Affairs Canada, p.125-138.

Location Map

Last Updated: Oct 1, 2018

Work History

Year Work Type Comment
1975 Drilling: Diamond Two holes, 148 m.
1975 Ground Geophysics: EM Ground magnetometer and EM surveys.
1974 Airborne Geophysics: Airborne Inductively Induced Polarization Also magnetic survey.

Regional Geology - Terrane

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


Regional Geology - Bedrock

Supergroup:
Group/Suite: Grass Lakes
Formation: Fire Lake
Member:
Terrane: Yukon-Tanana
Period Max: Devonian
Age Max: 365 MA
Period Min: Devonian
Age Min: 357 MA
Rock Major: greenstone
Rock Minor:
Reference: Murphy et al. (2001) - YGS OF 2001-33
Geological Unit (1M): DMF
Geological Unit (250K): DMF1

Assessment Reports that overlap occurrence

Report Number Year Title Worktypes Holes Drilled Meters Drilled
093346 1994 1994 Assessment Report Pick and Cod Properties Soil Geochemistry and Geological Mapping Soil - Geochemistry, Bedrock Mapping - Geology

Related References

Number Title Page(s) Document Type
ARMC014056 Airborne geophysical survey - Electromagnetic map - Grass Lake area - Map 1 of 4 Geophysical Map
Citations

Drill Core at YGS Core Library

Number Property Year Drilled Core Size Photos Data
Bev-10 Mink-Bev 1976 BTW 0 1
Bev-12 Mink-Bev 1976 BQ 0 1
Bev-8 Mink-Bev 1976 BTW 0 5
Bev-1 Mink-Bev 1975 BTW 0 1
Bev-3 Mink-Bev 1975 BTW 0 1
Bev-5 Mink-Bev 1975 BTW 0 1
Bev-6 Mink-Bev 1975 BTW 0 1

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