General Information
Secondary Commodities: silver, copper
Deposit Type(s): Manto Polymetallic Ag-Pb-Zn
Location(s): 64.679720 N, -136.9625 W
NTS Mapsheet(s): 116A10
Location Comments: .5 Kilometres
Hand Samples Available at YGS: No
Capsule
Work History
Copper mineralization was found in the area as early as 1917. The Hoffman, Copper, Rae and Chalco cl (80001) were staked in Jun/56 and optioned to Asbestos Corp, which explored by prospecting and hand trenching. Restaked as part of Zebra cl 1-14 (Y6287) in May/66 by Callison Enterprises. The claims were optioned in 1967 to Ventures ML and Anglo Western Mls L which explored by soil sampling in 1967 and vended the claims to Hart River ML in Dec/67. Hart River explored with grid soil sampling, trenching and 14.9 m of packsack drilling in 5 holes in 1971.
Capsule Geology
The claims cover Lower Proterozoic sedimentary rocks intruded by diorite sills which are Middle Proterozoic in age. Asbestos Corp located several showings of chalcopyrite in veins and lenses in the area.
Minfile occurrence 116A 011 was originally named the Rae showing but was renamed the Zebra showing by Callison Enterprises in 1966. Asbestos Corp described the occurrence as a massive lens of chalcopyrite 45 cm wide and 4.6 m long. The lens is situated within a shear zone and has been traced for a approximately 30 m. The best surface assay returned 7.3% Cu and 120.0 g/t Ag over 2.1 m.
Callison Enterprises cleaned out and expanded the original trench and collected chip samples. Abbott (1997) visited the showing and described it as a vertical, north-trending quartz-carbonate vein containing erratically distributed clots of chalcopyrite. The vein is parallel to, and about 40 m east of a narrow mafic dike. Both vein and dike cut the Quartet Group and emanate from a thick west-trending mafic sill which is located about 70 m north of the nearest vein exposure. The vein is almost 2 m wide at it's northern end and gradually narrows to the south where it is exposed in a series of hand trenches over a strike length of about 200 m. The Quartet Group is altered and silicified for about 1 m on either side of the vein. A chip sample collected by Callison Enterprises across the north end of the vein is reported to have returned assays of 0.14 g/t Au, 249 g/t Ag and 6.85% Cu across 1.2 m.
Two packsack holes drilled by Hart River assayed 0.45% Cu and 3.4 g/t Ag over 4.6 m and 3.29% Cu and 6.9 g/t Ag over 2.0 m.
Copper mineralization was found in the area as early as 1917. The Hoffman, Copper, Rae and Chalco cl (80001) were staked in Jun/56 and optioned to Asbestos Corp, which explored by prospecting and hand trenching. Restaked as part of Zebra cl 1-14 (Y6287) in May/66 by Callison Enterprises. The claims were optioned in 1967 to Ventures ML and Anglo Western Mls L which explored by soil sampling in 1967 and vended the claims to Hart River ML in Dec/67. Hart River explored with grid soil sampling, trenching and 14.9 m of packsack drilling in 5 holes in 1971.
Capsule Geology
The claims cover Lower Proterozoic sedimentary rocks intruded by diorite sills which are Middle Proterozoic in age. Asbestos Corp located several showings of chalcopyrite in veins and lenses in the area.
Minfile occurrence 116A 011 was originally named the Rae showing but was renamed the Zebra showing by Callison Enterprises in 1966. Asbestos Corp described the occurrence as a massive lens of chalcopyrite 45 cm wide and 4.6 m long. The lens is situated within a shear zone and has been traced for a approximately 30 m. The best surface assay returned 7.3% Cu and 120.0 g/t Ag over 2.1 m.
Callison Enterprises cleaned out and expanded the original trench and collected chip samples. Abbott (1997) visited the showing and described it as a vertical, north-trending quartz-carbonate vein containing erratically distributed clots of chalcopyrite. The vein is parallel to, and about 40 m east of a narrow mafic dike. Both vein and dike cut the Quartet Group and emanate from a thick west-trending mafic sill which is located about 70 m north of the nearest vein exposure. The vein is almost 2 m wide at it's northern end and gradually narrows to the south where it is exposed in a series of hand trenches over a strike length of about 200 m. The Quartet Group is altered and silicified for about 1 m on either side of the vein. A chip sample collected by Callison Enterprises across the north end of the vein is reported to have returned assays of 0.14 g/t Au, 249 g/t Ag and 6.85% Cu across 1.2 m.
Two packsack holes drilled by Hart River assayed 0.45% Cu and 3.4 g/t Ag over 4.6 m and 3.29% Cu and 6.9 g/t Ag over 2.0 m.
Location Map
Last Updated: Apr 10, 2017
Work History
| Year | Work Type | Comment |
|---|---|---|
| 1971 | Drilling: Portable | 5 holes, 14.94 m |
| 1971 | Geochemistry: Soil | |
| 1971 | Trenching | |
| 1967 | Geochemistry: Soil | |
| 1956 | Other | |
| 1956 | Trenching: Hand |
Regional Geology - Terrane
Group: Ancestral North America
Affinity: W Laurentia
Name: North America - platformal strata
Realm: Laurentia
Regional Geology - Bedrock
Supergroup:
Group/Suite:
Formation: Hart River
Member:
Terrane: Laurentia
Period Max: Ectasian
Age Max: 1385 MA
Period Min: Ectasian
Age Min: 1375 MA
Rock Major: diorite/gabbro/sills/dykes
Rock Minor:
Reference: Abbott (1997) - YGS GM 1997-2
Geological Unit (1M): mPH
Geological Unit (250K): mPH2
Assessment Reports that overlap occurrence
| Report Number | Year | Title | Worktypes | Holes Drilled | Meters Drilled |
|---|---|---|---|---|---|
| 019105 | 1968 | Report on a Geochemical Survey on the Zebra 1-89 Claims | Soil - Geochemistry | ||
| 019103 | 1966 | Geological and Engineering Evaluation Report on the Zebra 1 to 14 Mineral Claims of H. A. Briden | Rock - Geochemistry, Detailed Bedrock Mapping - Geology, Hand - Trenching | ||
| 091766 | 1956 | Geological Report on the Rae, Hoffman, Copper, and Chalco Groups | Rock - Geochemistry, Bedrock Mapping - Geology, Prospecting - Other, Hand - Trenching |
Related References
| Number | Title | Page(s) | Document Type |
|---|---|---|---|
| ARMC012666 | Geology - Mark and Zebra areas - Drawing no. 701-43 | Geoscience Map (Geological - Bedrock) | |
| ARMC012680 | Field sheet 116A-10 - Hart River showing Zebra, Linda B, Trade & Mark claims and hand drawn markings | Geoscience Map (General) | |
| 1993-7(G) | Surficial Geological Map of Stewart River Valley, parts of 115O/8, 115P/5 and 115P/12 | Open File (Geological - Bedrock) | |
| YEG1992-pg13 | Revised stratigraphy and new exploration targets in the Hart River region (NTS116A/10, 116A/11), southeastern Ogilvie Mountains | Annual Report Paper |
| Citations |
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