General Information
Secondary Commodities: gold, silver
Deposit Type(s): Vein Au-Quartz
Location(s): 62.592220 N, -131.841940 W
NTS Mapsheet(s): 105J12
Location Comments: .5 Kilometres
Hand Samples Available at YGS: No
Capsule
Work History
Discovered during regional exploration by Teck Corporation and staked as Kiwi cl 1-40 (YB97891) and Kiwi cl 41-82 (YC07901) in Jul/97. Teck carried out geological mapping, geochemical sampling and trenching in 1997 and geological mapping, geochemical sampling and prospecting in 1998.
In Apr/98, Western Prospector Group Ltd staked Aussi cl 1-20 (YC08561) contiguously to the east of the Kiwi claims and the Bali cl 1-24 (YC08581), Fuji cl 1-32 (YC08605) and Maori cl 1-28 (YC08637) contiguously to the northwest.
Capsule Geology
Located during regional exploration in the area by Teck, visible gold was discovered during investigation of a 135 m long gossanous zone located on the western bank of Kiwi Creek. A selected grab sample from this zone (Discovery) of the VG showing, which is hosted by quartz stringers in silicified black shale, returned 115.6 g/t Au with 32.7 g/t Ag.
Limited outcrop, in this extensively till covered area, suggests that it is probably underlain by Ordovician to Silurian Road River Group clastic sedimentary rock consisting of graphitic shales with minor grit. The sediments are apparently overlain by volcanic rock of the mid-Cretaceous South Fork Volcanic Complex and consist of lithic tuffs and minor debris flows. Both the sedimentary and volcanic rocks have been intruded by quartz-feldspar porphyritic monzonite dykes and sills of uncertain affinity, which are probably Cretaceous aged.
Quartz stringers, stockworking and silicification are common in the Discovery zone where trenching has revealed two areas of veining near the VG showing, both of which are at or proximal to monzonite/shale contacts. One of the areas of veining returned 0.4 g/t Au with 0.2% As from a sample across 1.6 m that included hanging wall rock. The other area, found only in float, returned 115 ppb Au from from grab sampling. About 50% of the rock samples collected from the Discovery zone in 1997 contained >100 ppb Au and 40% of the samples contained >1 000 ppm As.
Followup of several low order Au, Ag and As anomalies identified through soil sampling revealed two other zones of alteration and mineralization. The North zone, 800 m north of the Discovery zone, is at the contact between a pyritized quartz-feldspar porphyry dyke and black shale exposed along a fault zone. While the New zone, 700 m west of the Discovery zone, contains drusy quartz stringers, minor silicification, pervasive clay to propyllitic alteration and pyritization +/- pyrrhotite. Samples from the North zone were not anomalous in Au but a sample of dyke material returned 730 ppm As. Maximum values from the New zone were 50 ppb Au with 2 320 ppm As from clay altered intrusive with a limonitic box work.
Prospecting also uncovered mineralization hosted by the shales which included pyritic quartz, quartz breccia with shale fragments, stringer stockworks and high level quartz vein material all of which returned generally low values, except for one value of 5.8 g/t Ag from the high level quartz vein material.
References
TECK CORPORATION, May/98. Assessment Report #093836 by J. Pautler.
TECK CORPORATION, Mar/99. Assessment Report #093949 by J. Pautler.
YUKON EXPLORATION AND GEOLOGY 1997, p. 36; 1998, p. 12, 28.
Discovered during regional exploration by Teck Corporation and staked as Kiwi cl 1-40 (YB97891) and Kiwi cl 41-82 (YC07901) in Jul/97. Teck carried out geological mapping, geochemical sampling and trenching in 1997 and geological mapping, geochemical sampling and prospecting in 1998.
In Apr/98, Western Prospector Group Ltd staked Aussi cl 1-20 (YC08561) contiguously to the east of the Kiwi claims and the Bali cl 1-24 (YC08581), Fuji cl 1-32 (YC08605) and Maori cl 1-28 (YC08637) contiguously to the northwest.
Capsule Geology
Located during regional exploration in the area by Teck, visible gold was discovered during investigation of a 135 m long gossanous zone located on the western bank of Kiwi Creek. A selected grab sample from this zone (Discovery) of the VG showing, which is hosted by quartz stringers in silicified black shale, returned 115.6 g/t Au with 32.7 g/t Ag.
Limited outcrop, in this extensively till covered area, suggests that it is probably underlain by Ordovician to Silurian Road River Group clastic sedimentary rock consisting of graphitic shales with minor grit. The sediments are apparently overlain by volcanic rock of the mid-Cretaceous South Fork Volcanic Complex and consist of lithic tuffs and minor debris flows. Both the sedimentary and volcanic rocks have been intruded by quartz-feldspar porphyritic monzonite dykes and sills of uncertain affinity, which are probably Cretaceous aged.
Quartz stringers, stockworking and silicification are common in the Discovery zone where trenching has revealed two areas of veining near the VG showing, both of which are at or proximal to monzonite/shale contacts. One of the areas of veining returned 0.4 g/t Au with 0.2% As from a sample across 1.6 m that included hanging wall rock. The other area, found only in float, returned 115 ppb Au from from grab sampling. About 50% of the rock samples collected from the Discovery zone in 1997 contained >100 ppb Au and 40% of the samples contained >1 000 ppm As.
Followup of several low order Au, Ag and As anomalies identified through soil sampling revealed two other zones of alteration and mineralization. The North zone, 800 m north of the Discovery zone, is at the contact between a pyritized quartz-feldspar porphyry dyke and black shale exposed along a fault zone. While the New zone, 700 m west of the Discovery zone, contains drusy quartz stringers, minor silicification, pervasive clay to propyllitic alteration and pyritization +/- pyrrhotite. Samples from the North zone were not anomalous in Au but a sample of dyke material returned 730 ppm As. Maximum values from the New zone were 50 ppb Au with 2 320 ppm As from clay altered intrusive with a limonitic box work.
Prospecting also uncovered mineralization hosted by the shales which included pyritic quartz, quartz breccia with shale fragments, stringer stockworks and high level quartz vein material all of which returned generally low values, except for one value of 5.8 g/t Ag from the high level quartz vein material.
References
TECK CORPORATION, May/98. Assessment Report #093836 by J. Pautler.
TECK CORPORATION, Mar/99. Assessment Report #093949 by J. Pautler.
YUKON EXPLORATION AND GEOLOGY 1997, p. 36; 1998, p. 12, 28.
Location Map
Last Updated: Sep 15, 2011
Work History
| Year | Work Type | Comment |
|---|---|---|
| 1998 | Other | |
| 1997 | Geology: Bedrock Mapping | |
| 1997 | Other | |
| 1997 | Trenching |
Regional Geology - Terrane
Group: Ancestral North America
Affinity: W Laurentia
Name: North America - basinal strata
Realm: Laurentia
Regional Geology - Bedrock
Supergroup:
Group/Suite: Road River
Formation:
Member:
Terrane: Laurentia
Period Max: Ordovician
Age Max: 488 MA
Period Min: Devonian
Age Min: 398 MA
Rock Major: shale/chert/siltstone/limestone/conglomerate
Rock Minor:
Reference: Gordey (1995) - GSC Map 19-1987, sheet 2
Geological Unit (1M): ODR
Geological Unit (250K): ODR
Assessment Reports that overlap occurrence
| Report Number | Year | Title | Worktypes | Holes Drilled | Meters Drilled |
|---|---|---|---|---|---|
| 096153 | 2012 | 2012 Assessment Report for the Kiwi Project | Rock - Geochemistry, Silt - Geochemistry, Bedrock Mapping - Geology, Prospecting - Other | ||
| 095466 | 2011 | 2011 Assessment Report on the Kiwi Project | Diamond - Drilling, Rock - Geochemistry | 5 | 350.52 |
| 095335 | 2010 | 2010 Assessment Report on the Kiwi Project | Electromagnetic - Airborne Geophysics, Magnetic - Airborne Geophysics, Rock - Geochemistry, Soil - Geochemistry, Hand - Trenching | ||
| 093949 | 1998 | 1998 Geological and Geochemical Assessment Report on the Kiwi Property | Rock - Geochemistry, Silt - Geochemistry, Soil - Geochemistry, Detailed Bedrock Mapping - Geology | ||
| 093836 | 1997 | 1997 Geological, Geochemical and Trenching Report on the Kiwi Property | Rock - Geochemistry, Soil - Geochemistry, Detailed Bedrock Mapping - Geology, Hand - Trenching | ||
| 018941 | 1968 | Hess Project Report 1968 Laforce Lake - Mount Selous Area | Rock - Geochemistry, Silt - Geochemistry, Soil - Geochemistry, Regional Bedrock Mapping - Geology, Prospecting - Other |
Related References
| Number | Title | Page(s) | Document Type |
|---|---|---|---|
| ARMC016323 | Geochemical results and claim group map of sheet 105J/12 - Revised - Ross River | Geochemical Map | |
| ARMC016691 | Geochemical results and claim group map of sheet 105J/12 0 Revised | Geoscience Map (General) | |
| ARMC016690 | Geochem samples locations map - 105J/12 - With notes on Selwyn project | Geochemical Map | |
| ARMC016689 | Geochem samples map - 105J/12 - With notes on Selwyn project | Geochemical Map |
| Citations |
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