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Occurrence Details


Occurrence Number
105F 080
Occurrence Name
Nokluit
Occurrence Type
Hard-rock
Status
Prospect


General Information

Secondary Commodities: barite, rare earths, silver, thorium, uranium, yttrium, cerium, zinc, copper, fluorite, gold, lanthanum, lead, neodymium, niobium
Deposit Type(s): Skarn
Location(s): 61.489170 N, -132.174170 W
NTS Mapsheet(s): 105F08
Location Comments: .5 Kilometres
Hand Samples Available at YGS: Yes

Capsule

Work History

The syenite stock and associated fluorite and barite were first noted by British Yukon ECL on its Kay cl (69843), staked in Oct/54 and mapped in 1955. The radioactivity and rare earth minerals were discovered by Ukon JV (Chevron and Kerr Addison), which staked the Nokluit cl (YA567) in Aug/76 and explored with mapping, soil sampling and radiometric surveys in 1976 and 1977 and wide-spaced rock sampling in 1979.
The north side was restaked as Ketza cl (YA72436) in Oct/84 by a joint venture between Quillo Res Inc and High River Res L, which performed mapping and geochem sampling in 1985. In 1987, Canamax Res Inc performed airborne mag, geochem and VLF-EM surveys under an option. The claims were transferred to Canamax in May/89 then returned to Quillo and High River in Dec/89.
Restaked as Lancer claims (YB33962) in May/91 by J. Dodge, who prospected and sampled that year and transferred the claims to Dodgex Ltd in Jan/92. Dodge added the Lancer 9-10 cl (YB46275) and the Dig 1-2 cl (YB46273) in Sep/93, and performed hand trenching, sampling and a scintillometer survey. In June/94 Dodge carried out further trenching on Lancer cl 8 (YB33969).

Capsule Geology

Radioactive and rare earth minerals are associated with purple fluorite in skarns peripheral to a small Mississippian syenite stock cutting Cambrian carbonate rocks. Similar mineralization is found nearby in narrow siliceous veins cutting trachyte and tuff of Mississippian age. Assays range up to 3200 ppm Th, 74 ppm U, 2000 ppm Ce, 2000 ppm La, 2000 ppm Nd, 2000 ppm Y and 0.95% Cb2O5. The best chip sample collected in 1979 contained 1.2% rare earth elements and 0.5% niobium across 10 m.
Mapping by J. Dodge in 1991 showed that the rare earth elements are concentrated throughout a 3 to 8 m wide silicified and carbonatized zone in a metasomatized syenite dyke. The zone is slightly radioactive and has a strike of 120°and a subvertical dip. Petrographic analysis of a piece of leucocratic syenite showed that it consists almost entirely of fresh perthitic K feldspar, with up to 10% plagioclase, 10% quartz and 16% carbonate. Along the mineralized zone the syenite is altered to an almost structureless quartz-carbonate rock with relict lath textures. A more melanocratic phase of the syenite stock consisted of 53% albite and 28% aegirine, and lesser amounts of carbonate, hematite, fluorite, phlogopite and quartz.
Two galena-sphalerite showings were located by Quillo/High River. Grab samples of galena-rich and sphalerite-rich talus about 2 km northwest assayed 42.8% Pb, 1230.8 g/t Ag, 4.8% Zn and 0.07 g/t Au; and 17.7% Zn, 1.0% Pb, 48.0 g/t Ag and 0.03 g/t Au, respectively. This mineralization occurs in Lower Cambrian limestone near a major northwest-trending regional fault.
The second showing, one km to the northwest, consists of a northeast-trending vein swarm in Siluro-Devonian carbonate rocks. Individual veins are less than 4 cm wide within a zone that is 30 m wide. A grab sample assayed 918.8 g/t Ag, 25.1% Pb, 0.1% Cu and 0.07% Zn.

References

BRITISH YUKON EXPLORATION CO. LTD, Jan/56. Assessment Report by A.E. Aho & W.A. Padgham.

DODGEX LTD, Jul/92. Assessment Report #093036 by J.S. Dodge.

DODGEX LTD, May/94. Assessment Report #093196 by J.S. Dodge.

DODGEX LTD, Jul/96. Assessment Report *#093475 by J.S. Dodge.

HIGH RIVER RESOURCES LTD and QUILLO RESOURCES INC, Dec/85. Assessment Report *#091686 by C.G. Verley.

HIGH RIVER RESOURCES LTD and QUILLO RESOURCES INC, Dec/85. Assessment Report *#091687 by C.G. Verley.

MINERAL INDUSTRY REPORT 1976, p. 190-191; 1977, p. 80.

UKON JOINT VENTURE, 1976. Assessment Report *#090182 by A.R. Archer and E.P. Onasick.

UKON JOINT VENTURE, 1977. Assessment Report *#090270 by A.R. Archer.

UKON JOINT VENTURE, Jan/80. Assessment Report #090577 by A.R. Archer.

YUKON EXPLORATION 1987, p. 153.

YUKON GEOLOGY & EXPLORATION 1979-80, p. 55-59, 175.

Location Map

Last Updated: Oct 2, 2019

Work History

Year Work Type Comment
1994 Trenching: Hand Work carried out on Lancer claims.
1993 Ground Geophysics: Scintillometer Work carried out by Dodgex on Lancer and Dig claims.
1993 Trenching: Hand Work carried out by Dodgex on Lancer and Dig claims.
1991 Other: Prospecting
1987 Airborne Geophysics: Magnetic also VLF-EM surveys.
1987 Other: Prospecting
1987 Geology: Bedrock Mapping
1985 Geochemistry: Soil
1985 Geology: Bedrock Mapping
1979 Geochemistry: Rock
1976 Airborne Geophysics: Radiometric
1976 Geochemistry: Silt
1976 Geochemistry: Soil
1976 Geology: Bedrock Mapping
1976 Ground Geophysics: Radiometric Survey Follow-up of airborne results.
1955 Geology: Bedrock Mapping

Regional Geology - Terrane

Group: Ancestral North America
Affinity: W Laurentia
Name: Cassiar
Realm: Laurentia


Regional Geology - Bedrock

Supergroup:
Group/Suite: Earn
Formation:
Member:
Terrane: Cassiar
Period Max: Devonian
Age Max: 385 MA
Period Min: Carboniferous
Age Min: 345 MA
Rock Major: slate/sandstone/conglomerate
Rock Minor: volcanic
Reference: Tempelman-Kluit (1977) - GSC OF 486
Geological Unit (1M): DMEC
Geological Unit (250K): DMEC1

Assessment Reports that overlap occurrence

Report Number Year Title Worktypes Holes Drilled Meters Drilled
094537 2004 Assessment Report Describing Geology, Mineralization and Geochemistry at the Barra Property Silt - Geochemistry, Bedrock Mapping - Geology
093475 1996 Evaluation Report, Lancer Quartz Claims Data Compilation - Pre-existing Data
062308 1993 Re-evaluation of Specialty-Metals and Rare Earth Resources, Ketza River Area, South-central Yukon Property Evaluation - Other
093036 1991 Results of Sampling, Lancer 1-8 Claims Rock - Geochemistry, Radiometric Survey - Ground Geophysics, Petrographic - Lab Work/Physical Studies
091767 1987 1987 Geophysical Assessment Report, High River/Quillo Property Electromagnetic - Airborne Geophysics, Magnetic - Airborne Geophysics
090577 1979 Rock Sampling Program, Nokluit Property Rock - Geochemistry
090270 1977 Assessment Report on the Nokluit 1-8 Claims Radiometric - Airborne Geophysics, Rock - Geochemistry, Silt - Geochemistry, Soil - Geochemistry
090182 1976 Report on Geochemistry, Geology and Radiometric Survey Silt - Geochemistry, Water - Geochemistry, Scintillometer - Ground Geophysics, Prospecting - Other
017500 1955 Geologic Report on the Kay Group of Claims and Upper White Creek Bedrock Mapping - Geology

Related References

Number Title Page(s) Document Type
ARMC014261 Sketch plan of silver-lead-zinc vein - Locality "F" - Head of White Creek, Y.T. Geoscience Map (General)
Citations

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