General Information
Primary Commodities: barite
Secondary Commodities: zinc, silver
Deposit Type(s): Sediment hosted Stratiform Barite
Location(s): 63.985830 N, -137.18 W
NTS Mapsheet(s): 115P14
Location Comments: 1 Kilometres
Hand Samples Available at YGS: No
Capsule
Work History
Staked as Omega cl (YA65102) in Jul/82 by Mattagami Lake Mines Ltd and transferred to Noranda Exploration Company Ltd, which carried out geological mapping, geochemical sampling and VLF EM surveying in 1983. In 1985, Technifluids Ltd added more claims and carried out gravity surveying and geochemical sampling, bulldozer trenching, drilled 7 holes (333 m) and studied the feasibility of barite production in a joint venture.
Restaked as Hope (9-10) (YB48357) in April/94 by R Berdahl, who carried out a prospecting program later in the year.
Capsule Geology
Two bedded barite occurrences have been located in a sequence of quartzite, slate, sandstone, shale and conglomerate of the Devonoian-Mississippian Earn Group. Small Cretaceous syenite plutons outcrop 1.5 km to the southwest and 2 to 4 km to the northeast.
The main occurrence was tested with 6 drill holes and consists of a finely laminated barite bed containing minor argillite interbeds. It is overlain by black graphitic argillite and underlain by a thin bedded mixture of barite, limestone and witherite. The bed ranges in true thickness from 4.9 to 38 m and is faulted off along strike and at depth. Drilling in 1985 outlined reserves of 30,000 tonnes with an average grade of 88.38% barite, however the presence of argillite interbeds can lower the average grade. Thus the ore may require some upgrading before it can be shipped.
The second occurrence lies 3 km downstream and was tested by one drill hole. The barite bed is marked by a 200 m long barite-silver-zinc soil anomaly and is 10.4 m wide where penetrated by the drill hole. Unfortunately, the upper 6.7 m of the barite layer is contaminated with carbonate.
Berdahl sampled numerous sulphurous smelling barite/shale/chert showings near the main showing. None of the samples returned anomalous values for gold or sulphides.
Staked as Omega cl (YA65102) in Jul/82 by Mattagami Lake Mines Ltd and transferred to Noranda Exploration Company Ltd, which carried out geological mapping, geochemical sampling and VLF EM surveying in 1983. In 1985, Technifluids Ltd added more claims and carried out gravity surveying and geochemical sampling, bulldozer trenching, drilled 7 holes (333 m) and studied the feasibility of barite production in a joint venture.
Restaked as Hope (9-10) (YB48357) in April/94 by R Berdahl, who carried out a prospecting program later in the year.
Capsule Geology
Two bedded barite occurrences have been located in a sequence of quartzite, slate, sandstone, shale and conglomerate of the Devonoian-Mississippian Earn Group. Small Cretaceous syenite plutons outcrop 1.5 km to the southwest and 2 to 4 km to the northeast.
The main occurrence was tested with 6 drill holes and consists of a finely laminated barite bed containing minor argillite interbeds. It is overlain by black graphitic argillite and underlain by a thin bedded mixture of barite, limestone and witherite. The bed ranges in true thickness from 4.9 to 38 m and is faulted off along strike and at depth. Drilling in 1985 outlined reserves of 30,000 tonnes with an average grade of 88.38% barite, however the presence of argillite interbeds can lower the average grade. Thus the ore may require some upgrading before it can be shipped.
The second occurrence lies 3 km downstream and was tested by one drill hole. The barite bed is marked by a 200 m long barite-silver-zinc soil anomaly and is 10.4 m wide where penetrated by the drill hole. Unfortunately, the upper 6.7 m of the barite layer is contaminated with carbonate.
Berdahl sampled numerous sulphurous smelling barite/shale/chert showings near the main showing. None of the samples returned anomalous values for gold or sulphides.
Location Map
Last Updated: Jul 11, 2018
Work History
| Year | Work Type | Comment |
|---|---|---|
| 1994 | Other: Prospecting | |
| 1985 | Drilling: Diamond | Seven holes, 333 m. |
| 1985 | Geochemistry: Soil | |
| 1985 | Ground Geophysics: Gravity Survey | |
| 1985 | Other: Prospecting | |
| 1985 | Trenching: Mechanical | |
| 1983 | Geochemistry: Soil | |
| 1983 | Geology: Bedrock Mapping | |
| 1983 | Ground Geophysics: EM | Also VLF survey. |
| 1982 | Geochemistry: Rock | |
| 1982 | Geology: Bedrock Mapping |
Regional Geology - Terrane
Group: Ancestral North America
Affinity: W Laurentia
Name: North America - basinal strata
Realm: Laurentia
Regional Geology - Bedrock
Supergroup:
Group/Suite: Earn
Formation: Portrait Lake/Prevost
Member:
Terrane: Laurentia
Period Max: Devonian
Age Max: 385 MA
Period Min: Carboniferous
Age Min: 345 MA
Rock Major: siltstone/sandstone/conglo
Rock Minor: barite/limestone
Reference: Murphy et al. (1996) - YGS GM 1996-1
Geological Unit (1M): DME
Geological Unit (250K): DME1
Assessment Reports that overlap occurrence
| Report Number | Year | Title | Worktypes | Holes Drilled | Meters Drilled |
|---|---|---|---|---|---|
| 093967 | 1998 | Geological, Geochemical and Geophysical Report on the Oki-Doki Project Claims | Silt - Geochemistry, Soil - Geochemistry, IP - Ground Geophysics, Magnetics - Ground Geophysics | ||
| 091630 | 1985 | Omega 1-32 Claims: Trenching, 1984-85 | Mechanical - Trenching | ||
| 091795 | 1985 | Assessment Report, 1985 (Geophysical, Geochemical and Diamond Drilling) Omega 1-56 Claims | Diamond - Drilling, Rock - Geochemistry, Silt - Geochemistry, Soil - Geochemistry, Gravity Survey - Ground Geophysics, Hydraulic - Trenching | 6 | 333 |
| 091507 | 1983 | Omega 1-32 Claims: Exploration Report No. 1: Geology, Geochemistry, and Geophysics, 1983 | Silt - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology, EM - Ground Geophysics, Line Cutting - Other |
Related References
| Number | Title | Page(s) | Document Type |
|---|---|---|---|
| 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) | |
| YEG1985_86 | Yukon Exploration 1985-86 | 380-381 | Annual Report |
| 6 | Geology of the McQuesten River Region, Northern McQuesten and Mayo Map Areas, Yukon Territory (115P/14, 15, 16; 105M/13, 14) | Bulletin |
| Citations |
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