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Occurrence Details


Occurrence Number
106C 085
Occurrence Name
Little Red
Occurrence Type
Hard-rock
Status
Prospect


General Information

Primary Commodities: lead, zinc, silver
Secondary Commodities: copper
Aliases: Val
Deposit Type(s): Manto Polymetallic Ag-Pb-Zn, Sediment hosted Mississippi Valley-Type Pb-Zn (MVT)
Location(s): 64.262460 N, -133.7031 W
NTS Mapsheet(s): 106C05
Location Comments: Location based on 1979-8 drillhole (AR 090615)
Hand Samples Available at YGS: No

Capsule

Work History

The claim block covering the occurrence was staked (Val cl 1-318, YA30884 in July and Aug 1978 by Prism Joint Venture (Asamera Oil Corporation, Chieftain Development Company Ltd, Prism Resources Ltd, Siebens Oil and Gas Ltd and E & B Exploration Ltd). ). In 1979, Dome Petroleum Ltd replaced Siebens in the joint venture, and staked Val cl 319-376 (YA40125). In 1979, five holes were drilled on the Little Red Zone and bulldozer trenching was carried out on the lower slope. Dome dropped its interest and E & B's was transferred to Imperial Metals Ltd in 1983. The occurrence has seen rock and soil sampling, trenching, mapping, geophysical surveys and drilling starting in 1979. A regional airborne geophysical survey was conducted over the Val-Vera claim block in 2001 (no report available). In 2010, Archer Cathro and Associates Ltd. restaked the area as Rusty 1-344, including the claim underlying Little Red (Rusty 236, YD33476).

Capsule Geology

The occurrence is located at the southern edge of the Mackenzie Platform, a predominantly shallow water carbonate and clastic sequence that formed on the western margin of the North American craton during Lower Proterozoic through Paleozoic times. The regional geology consists of Upper Proterozoic Rapitan(?) Group mudstones overlain by Upper Proterozoic Profeit Formation dolostones and Upper Proterozoic Nadaleen Formation silty limestone. Over these units are minor clastic and carbonate rocks of the Neoproterozoic to Lower Cambrian Hyland Group. Lower Paleozoic platform carbonates unconformably overlie these units.

The Little Red Zone comprises argentiferous galena, sphalerite and tetrahedrite hosted in sparry dolomite veins (likely Profeit Formation dolostone) and highly oxidized breccia zones. Its surface expression is a large, gossanous kill zone on a southwest-facing talus slope.
 
In 1978, rock sampling, soil sampling and reconnaissance mapping was carried out. In, 1979, three diamond drillholes partially delineated a lens of mineralization. The best drillhole (79-8) returned 126 g/t Ag, 2.2% Pb and 29.0% Zn over 6.10 m and 21 g/t Ag, 1.0% Pb and 2.9% Zn over 12.20 from near surface (AR 090615).
 
Diamond drilling in 1988 targeted structural extensions of the Little Red Zone, 150 m east of the occurrence, but encountered only poorly mineralized breccias and quartz veining in the host dolomites. Drillhole 88-7 encountered minor pyrite, siderite and sphalerite in narrow veins at 78.9 m to 79.5 m but assayed low for zinc (AR 092725).
 
Landsat imagery acquired in 1998 and processed to enhance areas of alteration highlighted the Little Red Zone (LRZ), but was of limited usefulness in identifying unknown targets. The LRZ displayed a weak chargeability response and is within a resistivity low, however, the 1998 IP survey did outline a chargeability anomaly south and downhill of LRZ
 
In 1999, drilling south and west of Little Red (VA-99-01 & 02) tested IP chargeability anomalies along the structural trend that contains the Little Red Zone. This drilling identified a sequence of black graphitic calcareous shale in brecciated sparry dolomite as the probable source of the anomaly and did not intersect mineralization (AR 094073).
 
In 2010, Strategic Metals dug three hand trenches and collected chip and grab samples from the Little Red Zone. Hand trenching focused on the top of the kill zone, the source of mineralized float, which was higher up the slope than previous bulldozer trenching. The western-most float train consists of abundant, closely spaced massive galena fragments with strong malachite staining and bands of oxide. The first trench successfully exposed a massive galena vein in bedrock, which assayed 3430 g/t silver, 64.34% lead and 7.38% zinc over 18 cm. A second trench 20 m uphill was unmineralized. The third trench was dug about 20 m east of the first trench, at the top of a float train composed of mineralized breccia and oxide fragments. That trench exposed highly fractured dolostone with abundant galena, sphalerite and limonite as fracture fillings. Chip samples across a 3.4 m section yielded a weighted average of 296 g/t silver, 8.27% lead and 19.64% zinc (AR 096938).

Location Map

Last Updated: Mar 10, 2020

Work History

Year Work Type Comment
2010 Geochemistry: Rock
2010 Trenching: Hand
2001 Airborne Geophysics: Electromagnetic Also magnetic survey. Carried out as part of a regional airborne survey.
1999 Drilling: Diamond two holes, 767.5 m to south and west
1998 Ground Geophysics: IP
1998 Remote Sensing: Landsat
1988 Studies: Environmental Assessment/Impact
1988 Drilling: Diamond 3 holes, 501 m
1979 Drilling: Diamond five holes, 1304 m.
1979 Geology: Bedrock Mapping
1979 Trenching: Mechanical
1978 Geology: Bedrock Mapping
1978 Other: Prospecting
1978 Geochemistry: Silt

Regional Geology - Terrane

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


Regional Geology - Bedrock

Supergroup: Windermere
Group/Suite: Hay Creek
Formation: Profeit
Member:
Terrane: Laurentia
Period Max: Ediacaran
Age Max: 635 MA
Period Min: Ediacaran
Age Min: 542 MA
Rock Major: dolostone
Rock Minor: siltstone/sandstone/grit
Reference: Colpron (2014) - interpretation
Geological Unit (1M): uPHC
Geological Unit (250K): uPHC2

Assessment Reports that overlap occurrence

Report Number Year Title Worktypes Holes Drilled Meters Drilled
096253 2011 Assessment Report Describing 2011 Drilling and Geochemical Sampling at the Rusty Property Diamond - Drilling, Soil - Geochemistry 9 1340
095720 2010 Assessment Report Describing Geological Mapping, Prospecting and Geochemical Sampling at the Rusty Property Rock - Geochemistry, Silt - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology, Prospecting - Other
093968 1999 Geochemical, Geological and Geophysical Assessment, Report for the Val,Vera,Rusty,KLA,Nad and Craig Claims Orthophoto - Airphotography, Silt - Geochemistry, Bedrock Mapping - Geology, Detailed Bedrock Mapping - Geology, Prospecting - Other, Research/Summarize - Pre-existing Data
094073 1999 Geophysical, Geochemical and Diamond Drilling Assessment Report for the Val, Vera and Rusty Claims Diamond - Drilling, Rock - Geochemistry, Silt - Geochemistry, Soil - Geochemistry, IP - Ground Geophysics, Line Cutting - Other 7 986.80
092725 1988 A Preliminary Diamond Drilling and Trenching Report on the Val-Vera Quartz Claims All Weather Road - Development, Surface, Diamond - Drilling, Drill Core - Geochemistry, Silt - Geochemistry, Soil - Geochemistry, Prospecting - Other, Backhoe - Trenching 12 1479.20
062208 1985 Summary Report on the Val-Vera Property Research/Summarize - Pre-existing Data
062185 1983 Summary Report on the Val-Vera Property Research/Summarize - Pre-existing Data
090721 1980 Assessment Report Diamond Drilling Val 1-318 Claims Diamond - Drilling, Drill Core - Geochemistry 9 1304
090511 1978 Assessment Report on Geology, Geochemistry and Drilling at Val 1-318 Claims Diamond - Drilling, Silt - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology, IP - Ground Geophysics, Self-Potential - Ground Geophysics, Line Cutting - Other, Property Evaluation - Other, Prospecting - Other, Hand - Trenching 14 814

Related References

Number Title Page(s) Document Type
Citations
James, D.H., Apr/1980. Silver-lead-zinc at Kathleen Lakes. Canadian Mining Journal, p. 49-54.
Yukon Digital Geology <accessed July 30, 2019>

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