General Information
Secondary Commodities: asbestos
Aliases: Brownie, Rainbow
Deposit Type(s): Ultramafic-hosted asbestos
Location(s): 64.2950 N, -140.245560 W
NTS Mapsheet(s): 116C08
Location Comments: .5 Kilometres
Hand Samples Available at YGS: No
Capsule
Work History
The first claims in this area were Rainbow and Brownie cl (58066) staked in Jul/55 by prospectors grub staked by Fred Caley. Work on that occurrence was probably conducted concurrently with exploration of the Caley deposit, located 3 km southeast, including trenching by Canadian Johns-Manville about 1963-65 and road construction by C. Gillespie in 1978.
Restaked as Tiza cl (YA55347) in May/81 by Teslin JV (Brinco Mg L, Cominco L & Exploram Mls L), which explored with mapping, sampling and 130 excavator pits later in the year.
Restaked within Dome cl 1-38 (YB53100) by Archer, Cathro and Associates (1981) in Apr/95.
Capsule Geology
Two poorly exposed ultramafic bodies have been located. They are irregular shaped and consist mainly of highly sheared serpentinite with soapstone and quartz-carbonate along the margins. Pods of dark coloured, massive serpentinite about 1 to 3 m across contain minor quantities of fibre and occur sporadically throughout. One excavator pit near the top of the ridge contains appreciable amounts of fibre and grades about 4% Group 5 fibre.
The other ultramafic body, situated about one km to the north, contains only a few widely spaced fibre veins up to 5 mm long. Surrounding rocks are mainly graphitic schist and chlorite schist of the Yukon Tanana Terrane.
The first claims in this area were Rainbow and Brownie cl (58066) staked in Jul/55 by prospectors grub staked by Fred Caley. Work on that occurrence was probably conducted concurrently with exploration of the Caley deposit, located 3 km southeast, including trenching by Canadian Johns-Manville about 1963-65 and road construction by C. Gillespie in 1978.
Restaked as Tiza cl (YA55347) in May/81 by Teslin JV (Brinco Mg L, Cominco L & Exploram Mls L), which explored with mapping, sampling and 130 excavator pits later in the year.
Restaked within Dome cl 1-38 (YB53100) by Archer, Cathro and Associates (1981) in Apr/95.
Capsule Geology
Two poorly exposed ultramafic bodies have been located. They are irregular shaped and consist mainly of highly sheared serpentinite with soapstone and quartz-carbonate along the margins. Pods of dark coloured, massive serpentinite about 1 to 3 m across contain minor quantities of fibre and occur sporadically throughout. One excavator pit near the top of the ridge contains appreciable amounts of fibre and grades about 4% Group 5 fibre.
The other ultramafic body, situated about one km to the north, contains only a few widely spaced fibre veins up to 5 mm long. Surrounding rocks are mainly graphitic schist and chlorite schist of the Yukon Tanana Terrane.
Location Map
Last Updated: Mar 31, 2017
Work History
| Year | Work Type | Comment |
|---|---|---|
| 1981 | Geochemistry: Silt | |
| 1981 | Geochemistry: Soil | |
| 1981 | Geology: Bedrock Mapping | |
| 1981 | Trenching: Mechanical | |
| 1978 | Development, Surface: All Weather Road | |
| 1963 | Trenching |
Regional Geology - Terrane
Group: Intermontane
Affinity: W Laurentia
Name: Yukon-Tanana
Realm: peri-Laurentian
Regional Geology - Bedrock
Supergroup:
Group/Suite: Slide Mountain
Formation:
Member:
Terrane: Slide Mountain
Period Max: Carboniferous
Age Max: 359 MA
Period Min: Permian
Age Min: 260 MA
Rock Major: dunite/peridotite/harzburgite/diabase/serpentinite
Rock Minor:
Reference: Mortensen - unpublished compilation
Geological Unit (1M): CPSM
Geological Unit (250K): CPSM4
Assessment Reports that overlap occurrence
| Report Number | Year | Title | Worktypes | Holes Drilled | Meters Drilled |
|---|---|---|---|---|---|
| 091402 | 1981 | Report on Excavator Pitting Program Tiza 1-4 Claims | All Weather Road - Development, Surface, Rock - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology, Line Cutting - Other, Mechanical - Trenching | ||
| 019108 | 1967 | Geophysical Report Airborne Magnetometer Surveys on the MON, TON, BIG, EAST, GIBB, CLIN. CHIN , W.C, and CALEY Groups | Magnetic - Airborne Geophysics | ||
| 017945 | 1967 | Geological Report [on the ABW Claims] | Rock - Geochemistry, Soil - Geochemistry, Prospecting - Other | ||
| 017456 | 1964 | Caley Property, Dawson Mining Division, Yukon Territory | All Weather Road - Development, Surface, Diamond - Drilling, Rock - Geochemistry, Detailed Bedrock Mapping - Geology, Regional Bedrock Mapping - Geology, Magnetics - Ground Geophysics, Petrographic - Lab Work/Physical Studies, Line Cutting - Other, Data Compilation - Pre-existing Data | 4 | 653.50 |
Related References
| Number | Title | Page(s) | Document Type |
|---|---|---|---|
| ARMC004682 | Correspondences Re: Conwest's asbestos property south of Dawson, Y.T. | Miscellaneous Company Documents |
| Citations |
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