Database name: |
Canadian Iron Formation |
Custodial agency: |
Geological Survey of Canada |
Compilers: |
G. A. Gross and E. M. Hillary |
Release date: |
2014-08-21 |
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Deposit name(s): |
Roche Bay - Zone D (project); East Melville Iron Deposits (occurrence) |
Longitude / Latitude: |
-82.97744 / 68.36985 |
Political location(s): |
Canada; Province or state: Nunavut; Subprovince or locality: Melville Peninsula; Nearest community: Hall Beach |
NTS map data: |
047A06 (Roche Bay) |
Deposit clan (type): |
iron formation |
Deposit (sub) types: |
Algoma type; Reference: Anonymous: (123014) |
Deposit status: |
advanced project; Size category: significant; Status comments: Preliminary resource estimates based on geological considerations and aero-mag surveys indicated 160 million long tons of 24.9% magnetic Fe and 27% soluble Fe (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) |
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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Related igneous rocks: |
(1) intrusive; granite suite; Component: mineralization zoneIndividual lithologies: | granite |
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Metallogenic signatures: |
Fe |
Mineralogy: |
(mineralization): quartz (mineralization - massive / mineralization zone): magnetite |
Deposit shape: |
tabular; Component: mineralization zoneDeposit dimensions: | length: 1,525 metres width: 125 metres |
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Qualified comments: |
(Applies to: location ) The location for Area D was taken from AR 019503 Figure 5 (also see detailed insert).
(Applies to: mineralization) - Eastern Melville Peninsula hosts metamorphosed banded magnetite-quartz Algoma-type iron formations within the Archean Prince Albert Group greenstone belt. The orebodies occur within a zone that extends for over 30 miles in length and up to 4 miles in width. Five deposits have been outlined (A to E), and occur as vertically dipping rectangular slabs.
The iron formations form low rounded ridges running approximately NE-SW.
- The deposits contain an estimated historical combined tonnage of 1.1 billion long tons, based on surface sampling (not drilling). - Deposit D is a vertically inclined slab 1,524 m long, with an average thickness of 122 m (historical estimate).
(Applies to: reserve/resource assays) Preliminary reserve estimates based on geological considerations and aero-mag surveys indicated 160 million long tons (Ref Id 2688). |
Links to other databases: |
NUMIN; Key value: 047ASW0009 NMI; Key value: 47 A 06 Fe 1 |
Geophysical-chemical signature: |
Signature type: Airborne Magnetometer; Response type: positive (strong) |
Samples data: |
(1) Sample type: channel; Collector: ScruggsCommodities and grades in order of importance: | Fe (magnetic): 24.9 percent Fe (soluble): 27 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 |
Dorval, A.; Palmer, P.; Macdonald, G. S.; Hoos, R. A. W., 2010 |
Ni 43-101 Preliminary Economic Assessment Report for the Roche Bay Project, Nunavut, Canada |
NI 43-101 Technical Report, Met-Chem Canada Inc., Advanced Explorations Inc., Publication code 29053-2, 161 p. |
Henderson, J. R., 1968 |
Mineral Exploration Program, Melville Peninsula; Prospecting and sampling (060638) |
Mineral Assessment Report, Borealis Exploration Ltd; NH Ursel Associates Ltd, HE Neal and Associates Ltd (operator), Indian and Northern Affairs Canada, Publication code 060638 |
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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