General Information
Secondary Commodities: asbestos
Deposit Type(s): Ultramafic-hosted asbestos
Location(s): 64.345280 N, -140.031940 W
NTS Mapsheet(s): 116C08
Location Comments: 1 Kilometres
Hand Samples Available at YGS: No
Capsule
Work History
Discovered in 1964 by W. DeWolfe and examined by Cassiar Asbestos Corp L later in the year. Staked as Tjop cl (YA32682) in Jun/79 by Teslin JV (Cassiar Res L, Cominco & Exploram Mls L), which explored with mapping and sampling later in 1979-1981 and 116 excavator pits in 1981. Cassiar changed its name to Brinco Mg L in 1981.
Capsule Geology
Chrysotile fibre occurs in widely scattered float and small outcrops in an area of extensive overburden. The mineralization occurs in a large serpentinite body that has been intruded by irregular bodies and dikes of diorite. Host rocks are schist and quartzite of the Nasina series.
The excavator pitting exposed only small lenses of blocky serpentinite within sheared, barren serpentinite. The largest lens exposed is about 20 m across and contains about 3 to 4% cement grade chrysotile. Most lenses average only about 2 to 3 m across.
Discovered in 1964 by W. DeWolfe and examined by Cassiar Asbestos Corp L later in the year. Staked as Tjop cl (YA32682) in Jun/79 by Teslin JV (Cassiar Res L, Cominco & Exploram Mls L), which explored with mapping and sampling later in 1979-1981 and 116 excavator pits in 1981. Cassiar changed its name to Brinco Mg L in 1981.
Capsule Geology
Chrysotile fibre occurs in widely scattered float and small outcrops in an area of extensive overburden. The mineralization occurs in a large serpentinite body that has been intruded by irregular bodies and dikes of diorite. Host rocks are schist and quartzite of the Nasina series.
The excavator pitting exposed only small lenses of blocky serpentinite within sheared, barren serpentinite. The largest lens exposed is about 20 m across and contains about 3 to 4% cement grade chrysotile. Most lenses average only about 2 to 3 m across.
Location Map
Last Updated: Aug 1, 2018
Work History
| Year | Work Type | Comment |
|---|---|---|
| 1981 | Geochemistry: Soil | |
| 1981 | Geology: Bedrock Mapping | |
| 1981 | Trenching: Hand | |
| 1980 | Geochemistry: Soil | |
| 1980 | Geology: Bedrock Mapping | |
| 1980 | Ground Geophysics: Magnetics | |
| 1980 | Other: Prospecting |
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 |
|---|---|---|---|---|---|
| 096396 | 2012 | Geochemical Report on the Tjop Project | Rock - Geochemistry, Rock - Geochemistry, Silt - Geochemistry, Silt - Geochemistry, Soil - Geochemistry, Soil - Geochemistry, Prospecting - Other, Prospecting - Other | ||
| 090788 | 1980 | Report on Geology and Fibre Dispersion Survey TJOP 1-44, 45-46, 47-130, 131-196 Claims | Silt - Geochemistry, Soil - Geochemistry, Detailed Bedrock Mapping - Geology, Magnetics - Ground Geophysics, Line Cutting - Other, Prospecting - Other | ||
| 090521 | 1979 | Report on Geological Mapping and Soil Testing Survey on the TJOP Property | Rock - Geochemistry, Soil - Geochemistry, Detailed Bedrock Mapping - Geology, Prospecting - Other, Process/Interpret - Pre-existing Data |
