General Information
Primary Commodities: silver
Secondary Commodities: barite, copper, tin, zinc
Deposit Type(s): Vein and Greisens Sn
Location(s): 63°59'23" N - -137°17'31" W
NTS Mapsheet(s): 115P14
Location Comments: 1 Kilometres
Hand Samples Available: Yes
Last Reviewed:
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.
Work History
Date | Work Type | Comment |
---|---|---|
12/31/1988 | Drilling | Four holes, 608.7 m. |
12/31/1984 | Drilling | Ten holes, 883 m. |
12/31/1984 | Geology | |
12/31/1984 | Geochemistry | |
12/31/1984 | Ground Geophysics | Also VLF-EM survey. |
12/31/1984 | Trenching | |
12/31/1983 | Geochemistry |
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) | Reference Type | Document Type |
---|---|---|---|---|
1992GeolVol3_11 | Petrology and geochemistry of tin and tungsten mineralized plutons, McQuesten River Region, Central Yukon | 167-195 | Indian & Northern Affairs Canada/Department of Indian & Northern Development: Exploration & Geological Services Division | 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 | Indian & Northern Affairs Canada/Department of Indian & Northern Development: Exploration & Geological Services Division | Annual Report Paper |
YEG1992_pg61 | Geological overview of Clear Creek map area (NTS 115P/14), western Selwyn Basin | 61-69 | Indian & Northern Affairs Canada/Department of Indian & Northern Development: Exploration & Geological Services Division | Annual Report Paper |
GM1996-1 | Geological map of Clear Creek area, western Selwyn Basin, Yukon | Indian & Northern Affairs Canada/Department of Indian & Northern Development: Exploration & Geological Services Division | Geoscience Map (Geological - Bedrock) | |
1993-1(G) | Geological Map of Clear Creek Map Area, Western Selwyn Basin, Yukon (115P/14) | Indian & Northern Affairs Canada/Department of Indian & Northern Development: Exploration & Geological Services Division | 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) | Indian & Northern Affairs Canada/Department of Indian & Northern Development: Exploration & Geological Services Division | Bulletin | |
YEG1988_89 | Yukon Exploration 1988 | 220 | Indian & Northern Affairs Canada/Department of Indian & Northern Development: Exploration & Geological Services Division | Annual Report |
Resource/Reserve
Year | Zone | Type | Commodity | Grade | Tonnage | Amount | Reported Amount | 43-101 Compliant | Cut-off |
---|---|---|---|---|---|---|---|---|---|
1988 | ZETA (OPEN PIT) | Historical Estimate | silver | 557.8 g/t | 98,248 | No | No | Unknown | |
Estimate based on 14 drill holes and reported in YEG 1988, p. 220. Called drill indicated reserves. Not NI 43-101 compliant. |