Database name: |
Canadian Iron Formation |
Custodial agency: |
Geological Survey of Canada |
Compilers: |
G. A. Gross and E. M. Hillary |
Release date: |
2014-10-01 |
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Deposit name(s): |
Fraser Bay 1 (occurrence); Borealis - 1 (occurrence); West Melville Iron Deposits (occurrence) |
Political location(s): |
Canada; Province or state: Nunavut; Subprovince or locality: Melville Peninsula |
NTS map data: |
047B02 (Folster Lake) |
Deposit clan (type): |
iron formation |
Deposit (sub) types: |
Algoma type; Reference: Underhill, D. H., 1970: Report on the 1970 Mineral Exploration Program, Melville Peninsula (060744); Mineral Assessment Report, Borealis Exploration Ltd; UnderhillDH (Norman H. Ursel Associates Ltd) (operator), Indian and Northern Affairs Canada, Publication code 060744 |
Deposit status: |
advanced project; Size category: significant; Status comments: Indicated resources based on surface areas determined by planimeter - 640 million metric tons + 47 million metric tons in the North Extension (Ref ID 2688). |
Geologic province: |
Canadian Shield |
Geologic subprovince: |
Rae craton |
Deposit object located: |
centre of mineralized zone |
Commodities: |
Fe |
Mineralization styles: |
stratiform (mineralization zone) |
Geological ages: |
Archean (host rocks) Archean (mineralization) |
Tectonic setting: |
greenstone belt (host rocks) |
Coincident features: |
fault(s) |
Host rocks: |
(1) sedimentary; iron formation; Depositional setting: shallow marine; Metamorphic grade: amphibolite - lower; Component: mineralization zoneExternal host rock forms: | tabular sedimentary body | Internal host rock structures: | massive | Individual lithologies: | iron formation - oxide | Host rock stratigraphy: | Prince Albert group |
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Metallogenic signatures: |
Fe |
Mineralogy: |
(mineralization / mineralization zone): magnetite |
Deposit shape: |
tabular; Component: mineralization zoneDeposit dimensions: | width: 305 metres length: 1,220 metres width: 91 metres length: 840 metres |
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Qualified comments: |
(Applies to: location ) The location of the deposit was taken from AR 060744 Figure 11 (Geologic map of the vicinity of Borealis 1,2 and 3 iron formation occurrences).
(Applies to: mineralization) Western Melville Peninsula hosts metamorphosed Algoma-type iron formation deposits within the Archean Prince Albert Group greenstone belt. The orebodies occur within a zone that extends for approx 15 miles in length. Five deposits, Numbers 1 to 5, (plus subdivisions) have been outlined.
Magnetite, with minor specularite and quartz, are the main minerals in the iron formation of Deposits 1, 2, 4, and 5.
Hematite is the principal iron oxide in Deposit 3 West Limb , while both magnetite and hematite occur in 3 East Limb.
The deposits contain an estimated combined tonnage of 3.3 billion long tons, based on surface sampling (not drilling).
The Borealis 1 deposit is a steeply dipping rectangular slab with an average width of 1,000 feet over a strike length of 4,000 feet.
(Applies to: reserve/resource descriptions) Borealis 1 has 2 sub-zones: 1) Borealis 1 has potential tonnage of 640 million tons, and 2) North Extension with estimated 47 million long tons but no grades were determined.
(Applies to: rock analysis and sample assays) Three channel sample across 855 m collected at different locations across the deposit. The average magnetic Fe content 31.0 %. A 5 ton bulk sample from a series of pits in the central part of the deposit averaged 38.5 % magnetic Fe. |
Links to other databases: |
NUMIN; Key value: 047BSE0001 NMI; Key value: 47 B 2 Fe 1 |
Geophysical-chemical signature: |
Signature type: Airborne Magnetometer; Response type: positive (strong) |
Samples data: |
(1) Sample type: bulk; Sample weight: 5 long ton; Sample description: from pits in central part of deposit, average magnetic Fe grade; Collector: AnonymousCommodities and grades in order of importance: | Fe (magnetic): 38.5 percent | Reference number: Anonymous, 1982: Preliminary Feasibility Study, Borealis Roche Bay Magnetite Project (062133); Mineral Assessment Report, Borealis Exploration Ltd; Scott-Ortech Mining Ltd (operator), Indian and Northern Affairs Canada, Publication code 062133 (2) Sample type: channel; Sample description: 3 channel samples across 855 m - average magnetic Fe content; Collector: AnonymousCommodities and grades in order of importance: | Fe (magnetic): 31 percent | Reference number: Anonymous, 1982: Preliminary Feasibility Study, Borealis Roche Bay Magnetite Project (062133); Mineral Assessment Report, Borealis Exploration Ltd; Scott-Ortech Mining Ltd (operator), Indian and Northern Affairs Canada, Publication code 062133 (3) Sample type: channel; Sample description: Soluble and magnetic Fe fractions of samples; Collector: ScruggsCommodities and grades in order of importance: | Fe (magnetic): 32 percent Fe (soluble): 36.4 percent | Reference number: Scruggs, G. G., 1977: Geology and Research of all Borealis Claims, Melville Peninsula (080645); Mineral Assessment Report, Borealis Exploration Ltd, Indian and Northern Affairs Canada, Publication code 080645 |
References: |
Anonymous, 1982 |
Preliminary Feasibility Study, Borealis Roche Bay Magnetite Project (062133) |
Mineral Assessment Report, Borealis Exploration Ltd; Scott-Ortech Mining Ltd (operator), Indian and Northern Affairs Canada, Publication code 062133 |
Dufresne, M. B.; Turner, A. J., 2011 |
Technical report for the Fraser Bay Iron Property, Melville Peninsula, Nunavut, Canada |
NI 43-101 Technical Report, Apex Geoscience Ltd., West Melville Metals Inc., Publication code 2011-12-14, 64 p. |
Scruggs, G. G., 1977 |
Geology and Research of all Borealis Claims, Melville Peninsula (080645) |
Mineral Assessment Report, Borealis Exploration Ltd, Indian and Northern Affairs Canada, Publication code 080645 |
Underhill, D. H., 1970 |
Report on the 1970 Mineral Exploration Program, Melville Peninsula (060744) |
Mineral Assessment Report, Borealis Exploration Ltd; UnderhillDH (Norman H. Ursel Associates Ltd) (operator), Indian and Northern Affairs Canada, Publication code 060744 |
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Resource data: |
Disclaimer - Reserves/Resource Data
Her Majesty the Queen in Right of Canada, represented by the Minister of Natural Resources (NRCan) does not warrant or guarantee the accuracy, completeness or fitness for any purpose of Reserve and Resource information (Data) contained in this database, including whether the Data is compliant with any securities regulations or standards, and NRCan does not assume any liability with respect to any damage or loss incurred as a result of the use made of the Data.
Resource and reserve figures are historical in nature. The Data source provided with each set of figures should be cited if the Data are re-reported. |
Estimate date: 1977; Component: mineralization zone; 640 million long tons ore; Combined with production?: no; Provisional entry?: yes; Resource category: geological resource Reference: Scruggs, G. G., 1977: Geology and Research of all Borealis Claims, Melville Peninsula (080645); Mineral Assessment Report, Borealis Exploration Ltd, Indian and Northern Affairs Canada, Publication code 080645 Percent weights allocated to deposit: 100.0% |
Associated group(s): |
West Melville Iron Deposits (31) |