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Occurrence Details


Occurrence Number
105O 049
Occurrence Name
Faenzi
Occurrence Type
Hard-rock
Status
Showing


General Information

Secondary Commodities: arsenic, gold
Deposit Type(s): Vein Au-Quartz
Location(s): 63.273330 N, -131.374170 W
NTS Mapsheet(s): 105O06
Location Comments: .5 Kilometres
Hand Samples Available at YGS: No

Capsule

Exploration History

Staked as Leaf cl 1-39 (YA76992) in Jul/83 by AGIP Canada Ltd, which performed mapping and geochemical sampling later in the year. In 1988, AGIP changed its name to AGIP Resources Ltd.

Restaked as Nid cl 1-24 (YB44813) by B. Lueck in May/95. Lueck also staked YZ cl 1-4 (YB44840) 5 km to the east at the same time. The claims were subsequently sold to Yukon Gold Corp which carried out mapping and rock and soil sampling later in the summer. Sometime in 1997 Yukon Gold sold its interests to Alliance Pacific Gold which in turn optioned the claims in Jun/97 to Cyprus Canada Inc. Cyprus Canada carried out a helicopter reconnaissance program later that year. Cyprus Canada dropped its option in Jun/98 and returned the claims to Alliance Pacific Gold.

In 2010, Colorado Resources Ltd. re-staked the claims and conducted prospecting, rock and soil sampling the following year. The property was later vended to Fireweed Zinc Ltd and in 2021, Fireweed conducted prospecting, mapping and rock sampling.


Capsule Geology

The regional geology of the area consists of a series of Upper Cretaceous alkaline to calc-alkaline syenite to granite- quartz-monzonite plutons which intrude Devonian to Mississippian Earn Group sedimentary, basic volcanic and volcano-clastic rocks of the Selwyn Basin. 
The Leaf and Nid claims cover a Upper Cretaceous medium grained, slightly porphyritic, hornblende-biotite quartz monzonite pluton which intrudes north-dipping Devonian black shale and green mudstone with minor chert, siltstone and limestone. The YZ claims cover a smaller Upper Cretaceous biotite granite to quartz monzonite stock which intrudes Devonian to Mississippian black shale, green argillite, chert and siliceous argillite. Both intrusions are surrounded by a large zone (up to 1 km wide) of gneissic hornfels where the country rock has been recrystallized and contains disseminated pyrite and pyrrhotite. Several quartz-feldspar porphyry dikes cut the country rocks in both locations. This occurrence is related to Minfile Occurrence #105 057 located 1 km due west, and appears to cover an area containing gold bearing quartz veins whereas Minfile Occurrence 105O 049 covers a zone of mineralized hornfels 
AGIP reported a series of northwest-trending gold and arsenic anomalies associated with porphyry dykes and quartz veins that cut a hornfelsed sequence of shale, mudstone and chert near the margin of the quartz monzonite pluton. Quartz veins and stockworks with rare fluorite and arsenopyrite are usually associated with north to northeast-trending faults. The largest exposed vein (this occurrence) measures 40 m long and 2 m wide. Geochemical values reach peaks of 335 ppb gold and over 1 000 ppm arsenic. A specimen of fault breccia assayed 0.54 g/t gold. Two thin arsenopyrite-quartz veins were noted cutting a porphyry dike on the claim block. A grab sample of one of the veins returned 8.3 g/t gold. 
Yukon Gold spent 24 mandays exploring the two claim groups with the bulk of the work carried out on the YZ claim block. A rock sample collected from the intrusive located on the Nid claims near this occurrence returned 1.2 g/t gold and 215 ppm arsenic. Soil sampling carried out on the YZ claims returned 6 anomalous samples with the best returning 173 ppb gold and 1 463 ppm arsenic. The anomaly is centered over the northeast portion of the claim block. 
Cyprus Canada carried out one day of helicopter supported prospecting in which 4 grab rock samples were collected west of the YZ claims. No anomalous gold values were found.

Location Map

Last Updated: Jul 4, 2022

Work History

Year Work Type Comment
2011 Geochemistry: Rock
2011 Geochemistry: Soil
2011 Other: Prospecting
1997 Other
1995 Geology: Bedrock Mapping
1995 Other
1995 Other: Prospecting
1983 Geochemistry: Soil
1983 Geology: Bedrock Mapping
1983 Other
1983 Geochemistry: Rock
1968 Geochemistry: Silt
1968 Geochemistry: Soil
1968 Geology: Regional Surficial Mapping

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:
Member: undivided
Terrane: Laurentia
Period Max: Devonian
Age Max: 410 MA
Period Min: Carboniferous
Age Min: 345 MA
Rock Major: mudstone/siltstone/shale/sandstone/conglo/flows/tuffs/plugs
Rock Minor:
Reference: Roots (2003) - YGS GM 2003-1; GSC OF 1616
Geological Unit (1M): DME
Geological Unit (250K): DME

Assessment Reports that overlap occurrence

Report Number Year Title Worktypes Holes Drilled Meters Drilled
095749 2011 Geological and Geochemical Report on the Nid Property Rock - Geochemistry, Soil - Geochemistry, Prospecting - Other
093827 1997 1997 Geological Assessment Report on Emerald Lake Claims Rock - Geochemistry, Silt - Geochemistry, Soil - Geochemistry
093497 1995 Geological and Geochemical Assessment Report for the Nid 1-24 Claims and YZ 1-4 Claims Soil - Geochemistry, Detailed Bedrock Mapping - Geology, Prospecting - Other
091532 1983 Assessment Report Leaf 1-39 Claims Rock - Geochemistry, Soil - Geochemistry, Detailed Bedrock Mapping - Geology
019809 1968 Hess Area Project Proposed Property Follow-Up 1968 Field Season Research/Summarize - Pre-existing Data
019033 1968 Atlas Explorations Limited Project Report 1968 Hess River Area Silt - Geochemistry, Soil - Geochemistry, Regional Bedrock Mapping - Geology
018947 1967 Hess River Project Report Rock - Geochemistry, Soil - Geochemistry, Detailed Bedrock Mapping - Geology
019032 1967 Hess River Project Report Data Compilation - Pre-existing Data

Related References

Number Title Page(s) Document Type
ARMC008212 Detail map area - geochem values - Cu, Pb, Zn, Ba - MacMillan project - 105-O-6 Geochemical Map
ARMC008213 Detail area map - MacMillan project - 105-O-6 Geochemical Map
ARMC008033 Geochemical results and claim group map of sheet 105-O-7 - Ross River Geochemical Map
BROCK000090 Geology map - Geochemical results and claim group map of sheet 105-O-6 - Fig. 19 Geoscience Map (Geological - Bedrock)
Citations

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