General Information
Secondary Commodities: lead, zinc, silver
Aliases: Mom, Tom
Deposit Type(s): Sediment hosted Mississippi Valley-Type Pb-Zn (MVT)
Location(s): 64.142720 N, -131.929790 W
NTS Mapsheet(s): 106B04
Location Comments: Coordinates supplied by ATAC 2019
Hand Samples Available at YGS: No
Capsule
Work History
Staked as 176 Tom & Mum cl (Y96561) in Aug-Sep/74 by McIntyre ML, which explored with mapping and prospecting in 1974 and mapping, geochem sampling, hand trenching and 10 BQ holes (900.7 m) and 22 Winkie holes (325.8 m) in 1975. McIntyre entered a joint venture in 1978 with Can Superior EL.
Minor soil and silt sampling has been completed near the occurrence but work has been limited since 1976.
Capsule Geology
The occurrence is underlain by Late Proterozoic-Early Cambrian Hyland Group rocks. From bottom to top the sequence consists of of shale, sandstone, micrite, sandstone, shale and orange weathering dolomite. The micrite includes various carbonate rocks, variously bedded and brecciated, and in part dolomitic, cherty and/or oolitic. Zebra-textured dolomite is common in the are and is associated with deposition of red to dark green sphalerite. Galena is not generally common and pyrite is absent. Numerous small showings are present but the best (J35) was reportedly up to 121.9 m long, 15 m wide and assayed up to 25% combined lead-zinc. The best intersection (Hole 75-31) assayed 4.4% Zn, 0.5% Pb and 2.7 g/t Ag across 1.8 m.
Soil assays from 2012 returned up to 25 ppb gold and up to 2000 ppm arsenic.
Staked as 176 Tom & Mum cl (Y96561) in Aug-Sep/74 by McIntyre ML, which explored with mapping and prospecting in 1974 and mapping, geochem sampling, hand trenching and 10 BQ holes (900.7 m) and 22 Winkie holes (325.8 m) in 1975. McIntyre entered a joint venture in 1978 with Can Superior EL.
Minor soil and silt sampling has been completed near the occurrence but work has been limited since 1976.
Capsule Geology
The occurrence is underlain by Late Proterozoic-Early Cambrian Hyland Group rocks. From bottom to top the sequence consists of of shale, sandstone, micrite, sandstone, shale and orange weathering dolomite. The micrite includes various carbonate rocks, variously bedded and brecciated, and in part dolomitic, cherty and/or oolitic. Zebra-textured dolomite is common in the are and is associated with deposition of red to dark green sphalerite. Galena is not generally common and pyrite is absent. Numerous small showings are present but the best (J35) was reportedly up to 121.9 m long, 15 m wide and assayed up to 25% combined lead-zinc. The best intersection (Hole 75-31) assayed 4.4% Zn, 0.5% Pb and 2.7 g/t Ag across 1.8 m.
Soil assays from 2012 returned up to 25 ppb gold and up to 2000 ppm arsenic.
Location Map
Last Updated: Dec 3, 2019
Work History
| Year | Work Type | Comment |
|---|---|---|
| 2012 | Geochemistry: Soil | |
| 2011 | Geochemistry: Silt | |
| 1975 | Drilling: Portable | Twenty-two holes, 325.8 m. |
| 1975 | Geochemistry: Soil | Also some rock sampling. |
| 1975 | Geology: Bedrock Mapping | 1:1 000 scale. |
| 1975 | Trenching: Hand | |
| 1974 | Geology: Detailed Bedrock Mapping | |
| 1974 | Other: Prospecting |
Regional Geology - Terrane
Group: Ancestral North America
Affinity: W Laurentia
Name: North America - basinal strata
Realm: Laurentia
Regional Geology - Bedrock
Supergroup: Windermere
Group/Suite: Hyland
Formation: Narchilla
Member: Arrowhead
Terrane: Laurentia
Period Max: Ediacaran
Age Max: 635 MA
Period Min: Cambrian
Age Min: 518 MA
Rock Major: mudstone, siltstone, sandstone, conglomerate
Rock Minor: limestone
Reference: Moynihan (2014) - YGS OF 2014-1
Geological Unit (1M): PCH
Geological Unit (250K): PCH8
Assessment Reports that overlap occurrence
| Report Number | Year | Title | Worktypes | Holes Drilled | Meters Drilled |
|---|---|---|---|---|---|
| 096607 | 2012 | Assessment Report Describing Metallurgical Testing, Wildlife Monitoring, Heritage Evaluation, and Water Quality and Climate Monitoring Surveys | Water - Geochemistry, Metallurgical Tests - Lab Work/Physical Studies, Environmental Assessment/Impact - Studies, Heritage/Archeological - Studies | ||
| 096597 | 2012 | Assessment Report Describing Geochemical Sampling, Auger Sampling, Geological Mapping, Diamond Drilling, and Geophysical Surveys | Air Strip - Development, Surface, Auger - Drilling, Diamond - Drilling, Rock - Geochemistry, Silt - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology, EM - Ground Geophysics, Gravity Survey - Ground Geophysics, Magnetics - Ground Geophysics, Prospecting - Other, Hand - Trenching | 172 | 37340.37 |
| 095938 | 2011 | Assessment Report Describing Geochemical Sampling, Geological Mapping and Remote Sensing Surveys at the Rackla Gold Property | Rock - Geochemistry, Silt - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology, LIDAR - Remote Sensing, Heritage/Archeological - Studies | ||
| 090080 | 1975 | Geological and Geochemical Report on Tom and Mon Claims | Diamond - Drilling, Soil - Geochemistry, Detailed Bedrock Mapping - Geology, Mechanical - Trenching | 5 | 678 |
Related References
| Number | Title | Page(s) | Document Type |
|---|
| Citations |
|---|
| MINERAL INDUSTRY REPORT 1975, p. 32. |
Drill Core at YGS Core Library
| Number | Property | Year Drilled | Core Size | Photos | Data |
|---|---|---|---|---|---|
| DDH-75-15 | Birkeland | 1975 | BQ | 0 | 0 |
