General Information
Primary Commodities: iron
Deposit Type(s): Iron Formation
Location(s): 66°31'25" N - -140°16'47" W
NTS Mapsheet(s): 116K09
Location Comments: .5 Kilometres
Hand Samples Available: Yes
Last Reviewed:
Capsule
Work History
Discovered before 1973 by a joint venture between Inexco Mg C (Int. Nuclear OCL), Amoco Can. Pet. CL, Arrow Inter-America and Husky OL. First staked as Rio iron cl (YA2823) and Alto cl (YA2914) in Oct/75 by Rio Alto EL, which added Yeti cl (YA2962) in Feb/76, performed mapping and sampling later in the year, added the Moose cl (YA10820) and prepared a topographic map in 1977. Rio Alto performed road building, trenching and mapping in 1983.
Restaked as Tr0g cl 1-432 (YB88193) by Eagle Plains Resources Ltd in Jul/96.
Capsule Geology
Oolitic magnetite occurs in a 46 m thick bed that is exposed for a length of 366 m at the contact between clastic rocks of the Permian Jungle Creek Formation and recessive black shale of the Jurassic and Lower Cretaceous Kingak Formation. The magnetite is dark grey to black, massive and dense and weathers into rusty, angular fragments. The oolites are closely packed, commonly flattened with their long dimensions as much as 1 mm, and are locally replaced by goethite and hematite. The company estimatedt reserves of at 27,200,000 tonnes grading 55% Fe.
Discovered before 1973 by a joint venture between Inexco Mg C (Int. Nuclear OCL), Amoco Can. Pet. CL, Arrow Inter-America and Husky OL. First staked as Rio iron cl (YA2823) and Alto cl (YA2914) in Oct/75 by Rio Alto EL, which added Yeti cl (YA2962) in Feb/76, performed mapping and sampling later in the year, added the Moose cl (YA10820) and prepared a topographic map in 1977. Rio Alto performed road building, trenching and mapping in 1983.
Restaked as Tr0g cl 1-432 (YB88193) by Eagle Plains Resources Ltd in Jul/96.
Capsule Geology
Oolitic magnetite occurs in a 46 m thick bed that is exposed for a length of 366 m at the contact between clastic rocks of the Permian Jungle Creek Formation and recessive black shale of the Jurassic and Lower Cretaceous Kingak Formation. The magnetite is dark grey to black, massive and dense and weathers into rusty, angular fragments. The oolites are closely packed, commonly flattened with their long dimensions as much as 1 mm, and are locally replaced by goethite and hematite. The company estimatedt reserves of at 27,200,000 tonnes grading 55% Fe.
Work History
| Date | Work Type | Comment |
|---|---|---|
| 12/31/1983 | Geology | |
| 12/31/1983 | Development, Surface | |
| 12/31/1983 | Trenching | |
| 12/31/1977 | Geology | |
| 12/31/1976 | Geology | |
| 12/31/1976 | Geochemistry |
Assessment Reports that overlap occurrence
| Report Number | Year | Title | Worktypes | Holes Drilled | Meters Drilled |
|---|---|---|---|---|---|
| 094242 | 2001 | Geological Report on the Rusty Springs Property | Rock - Geochemistry | ||
| 090158 | 1976 | Geology of the Rusty Springs Mineral Prospect, Porcupine Ranges, Yukon Territory | Rock - Geochemistry, Soil - Geochemistry, Detailed Bedrock Mapping - Geology, Handblast - Trenching |
Resource/Reserve
| Year | Zone | Type | Commodity | Grade | Tonnage | Amount | Reported Amount | 43-101 Compliant | Cut-off |
|---|---|---|---|---|---|---|---|---|---|
| 1976 | ALTO (OPEN PIT) | Historical Estimate | iron | 55 % | 27,200,000 | No | No | Unknown | |
| Calculation is a 'conservative estimate' based on observed data from one continuous section that was measured and sampled (4 samples) at 1.5 m intervals across the deposit. | |||||||||