General Information
Primary Commodities: silver
Secondary Commodities: copper, zinc, tin, barite
Deposit Type(s): Vein and Greisens Sn
Location(s): 63.989720 N, -137.291940 W
NTS Mapsheet(s): 115P14
Location Comments: 1 Kilometres
Hand Samples Available at YGS: Yes
Capsule
Work History
Staked as Zeta cl (YA79015) in Jun/83 by Noranda Exploration Company Ltd, which explored with trenching, mapping, mag, VLF EM and geochem surveys and drilling of 10 holes (883 m) in 1984. Noranda optioned the property in Apr/88 to Danra Resources Ltd, which drilled 4 holes (138 m) later that year.
Restaked as Hope cl (1-4) (YB48348) by R. Berdahl in April/94. Berdahl also staked Hope cl (11) (YB48358) 1 km to the west and Hope cl (5-7) (YB48352) 2 km to the southeast.
In Apr/97 International Kodiak Resources Inc staked Bald cl 1-16 (YC 04287) 6.5 km to the west. Between Jun and Nov/97 G. Nickolson staked Screamer cl 1-4 (YC03395), 19-24 (YC03537) and 62-70 (YC04398) 4 km to the southwest.
Capsule Geology
The claims were staked on argentiferous galena veins at the contact between shale, sandstone and conglomerate of the Devonian-Mississippian Earn Group and the Syenite Range Stock, a zoned mid-Cretaceous felsic intrusion. The core of the intrusion consists of tourmaline orbicular granite, and is surrounded by concentric zones of quartz monzonite and syenite. Sedimentary rocks are hornfelsed and pyritic up to 100 m away from the intrusive contact.
The main zone, which strikes 065° and dips steeply south, cuts across the intrusive hornfels contact. It consists of three parallel tourmaline-muscovite quartz greisen veins, up to 3 m wide, enclosed by 10 to 30 m wide alteration envelopes of kaolinite, hematite, limonite and talc. This zone has been traced 500 m into the pluton and is mineralized with varying amounts of pyrite, arsenopyrite, cassiterite, sphalerite, jamesonite, covellite, chalcocite and stannite.
The 1984 drilling tested the main zone for 150 m along strike and 100 m downdip. The best assays were 751.5 g/t Ag over 4.3 m and 528.3 g/t Ag over 3.2 m. Grades appear to improve beneath a 30 to 40 m thick zone of surface leaching. Geological reserves in this zone are estimated at 98,248 tonnes grading 557.8 g/t Ag (Yukon Exploration 1988). Noranda estimated an average tin content of 0.1% with local concentrations up to 0.6%.
A second zone nearby lies completely within the hornfels. It strikes 090° and has been traced for at least 400 m. Mineralization in this zone is much more erratic. Other veins have been located about 2 km to the west. Two outcrops of white interlaminated barite and chert were located on the north side of the property. The barite coincides with a strong linear Cu, Zn and Ag soil anomaly that is 500 m long.
Berdahl concentrated his efforts towards extending the strike length of the known mineralization. Prospecting outlined several areas of interest which require follow up work. Panning carried out on creeks draining the Syenite Range failed to return significant gold values.
Staked as Zeta cl (YA79015) in Jun/83 by Noranda Exploration Company Ltd, which explored with trenching, mapping, mag, VLF EM and geochem surveys and drilling of 10 holes (883 m) in 1984. Noranda optioned the property in Apr/88 to Danra Resources Ltd, which drilled 4 holes (138 m) later that year.
Restaked as Hope cl (1-4) (YB48348) by R. Berdahl in April/94. Berdahl also staked Hope cl (11) (YB48358) 1 km to the west and Hope cl (5-7) (YB48352) 2 km to the southeast.
In Apr/97 International Kodiak Resources Inc staked Bald cl 1-16 (YC 04287) 6.5 km to the west. Between Jun and Nov/97 G. Nickolson staked Screamer cl 1-4 (YC03395), 19-24 (YC03537) and 62-70 (YC04398) 4 km to the southwest.
Capsule Geology
The claims were staked on argentiferous galena veins at the contact between shale, sandstone and conglomerate of the Devonian-Mississippian Earn Group and the Syenite Range Stock, a zoned mid-Cretaceous felsic intrusion. The core of the intrusion consists of tourmaline orbicular granite, and is surrounded by concentric zones of quartz monzonite and syenite. Sedimentary rocks are hornfelsed and pyritic up to 100 m away from the intrusive contact.
The main zone, which strikes 065° and dips steeply south, cuts across the intrusive hornfels contact. It consists of three parallel tourmaline-muscovite quartz greisen veins, up to 3 m wide, enclosed by 10 to 30 m wide alteration envelopes of kaolinite, hematite, limonite and talc. This zone has been traced 500 m into the pluton and is mineralized with varying amounts of pyrite, arsenopyrite, cassiterite, sphalerite, jamesonite, covellite, chalcocite and stannite.
The 1984 drilling tested the main zone for 150 m along strike and 100 m downdip. The best assays were 751.5 g/t Ag over 4.3 m and 528.3 g/t Ag over 3.2 m. Grades appear to improve beneath a 30 to 40 m thick zone of surface leaching. Geological reserves in this zone are estimated at 98,248 tonnes grading 557.8 g/t Ag (Yukon Exploration 1988). Noranda estimated an average tin content of 0.1% with local concentrations up to 0.6%.
A second zone nearby lies completely within the hornfels. It strikes 090° and has been traced for at least 400 m. Mineralization in this zone is much more erratic. Other veins have been located about 2 km to the west. Two outcrops of white interlaminated barite and chert were located on the north side of the property. The barite coincides with a strong linear Cu, Zn and Ag soil anomaly that is 500 m long.
Berdahl concentrated his efforts towards extending the strike length of the known mineralization. Prospecting outlined several areas of interest which require follow up work. Panning carried out on creeks draining the Syenite Range failed to return significant gold values.
Location Map
Last Updated: Sep 5, 2018
Work History
| Year | Work Type | Comment |
|---|---|---|
| 1988 | Drilling: Diamond | Four holes, 608.7 m. |
| 1984 | Drilling: Diamond | Ten holes, 883 m. |
| 1984 | Geochemistry: Silt | |
| 1984 | Geology: Bedrock Mapping | |
| 1984 | Ground Geophysics: Magnetics | Also VLF-EM survey. |
| 1984 | Trenching: Mechanical | |
| 1983 | Geochemistry: Soil |
Regional Geology - Terrane
Group: Ancestral North America
Affinity: W Laurentia
Name: North America - basinal strata
Realm: Laurentia
Regional Geology - Bedrock
Supergroup:
Group/Suite: Tombstone
Formation:
Member:
Terrane:
Period Max: Cretaceous
Age Max: 94 MA
Period Min: Cretaceous
Age Min: 90 MA
Rock Major: syenite/quartz syenite/granite/monzogranite/clinopyroxenite/tinguiate
Rock Minor:
Reference: Murphy et al. (1996) - YGS GM 1996-1
Geological Unit (1M): mKT
Geological Unit (250K): mKyT
Assessment Reports that overlap occurrence
| Report Number | Year | Title | Worktypes | Holes Drilled | Meters Drilled |
|---|---|---|---|---|---|
| 095128 | 2008 | Assessment Report Describing Diamond Drilling at the Hopeful Property | Diamond - Drilling | 6 | 865.03 |
| 094853 | 2007 | Assessment Report Describing Geochemical Sampling and Prospecting at the Hopeful Property | Magnetic - Airborne Geophysics, VTEM - Airborne Geophysics, Rock - Geochemistry, Soil - Geochemistry, Prospecting - Other | ||
| 093471 | 1994 | Prospecting and Geochemical Report, Hope 1-11 | Rock - Geochemistry, Prospecting - Other | ||
| 092675 | 1988 | Report on Diamond Drilling Program Dawson Silver Prospect | Diamond - Drilling | 4 | 608.70 |
| 062287 | 1986 | Report on Dawson Silver Prospect, Dawson Mining District, Yukon Dana Resources Limited | Cursory Property Visit - Other, Research/Summarize - Pre-existing Data | ||
| 091782 | 1985 | Geology of the Zeta 1-84 Claims | Historical Drill Core - Geochemistry, Rock - Geochemistry, Detailed Bedrock Mapping - Geology, Geotechnical - Studies | ||
| 091590 | 1984 | Zeta 1-40 Claims: Geology, Geochemistry, Geophysics and Diamond Drilling, 1984 | Diamond - Drilling, Rock - Geochemistry, Silt - Geochemistry, Soil - Geochemistry, Water - Geochemistry, Detailed Bedrock Mapping - Geology, Regional Bedrock Mapping - Geology, EM - Ground Geophysics, Line Cutting - Other, Mechanical - Trenching | 10 | 883.06 |
Related References
| Number | Title | Page(s) | Document Type |
|---|---|---|---|
| 1992GeolVol3_11 | Petrology and geochemistry of tin and tungsten mineralized plutons, McQuesten River Region, Central Yukon | 167-195 | Annual Report Paper |
| 1992GeolVol3_09 | Geology, mineralogy and geochemistry of tin and tungsten veins, breccias and skarns, Mcquesten River Region (115 P (north) and 105 M/13), Yukon | 133-159 | Annual Report Paper |
| YEG1992_pg61 | Geological overview of Clear Creek map area (NTS 115P/14), western Selwyn Basin | 61-69 | Annual Report Paper |
| GM1996-1 | Geological map of Clear Creek area, western Selwyn Basin, Yukon | Geoscience Map (Geological - Bedrock) | |
| 1993-1(G) | Geological Map of Clear Creek Map Area, Western Selwyn Basin, Yukon (115P/14) | Open File (Geological - Bedrock) | |
| 6 | Geology of the McQuesten River Region, Northern McQuesten and Mayo Map Areas, Yukon Territory (115P/14, 15, 16; 105M/13, 14) | Bulletin | |
| YEG1988_89 | Yukon Exploration 1988 | 220 | Annual Report |
| Citations |
|---|
| Abercrombie, S.M., 1990. Petrology, geochronometry, and economic geology: The Zeta tin-silver prospect, Arsenic Ridge, west-central Yukon (115P/14 and 116A/3). MSc thesis, University of British Columbia, Vancouver, BC. |
Drill Core at YGS Core Library
| Number | Property | Year Drilled | Core Size | Photos | Data |
|---|---|---|---|---|---|
| Z-84-1 | Zeta | 1984 | NQ | 0 | 2 |
| Z-84-10 | Zeta | 1984 | NQ | 0 | 2 |
| Z-84-2 | Zeta | 1984 | NQ | 0 | 2 |
| Z-84-3 | Zeta | 1984 | NQ | 0 | 2 |
| Z-84-4 | Zeta | 1984 | NQ | 0 | 2 |
| Z-84-6 | Zeta | 1984 | NQ | 0 | 2 |
| Z-84-7 | Zeta | 1984 | NQ | 0 | 2 |
| Z-84-8 | Zeta | 1984 | NQ | 0 | 2 |
