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 group name(s): |
East Melville Iron Deposits (occurrence group); Roche Bay (occurrence group) |
Political location(s): |
Canada; Province or state: Nunavut; Subprovince or locality: Melville Peninsula |
NTS map data: |
047A06 (Roche Bay) |
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 group status: |
developed prospect; Size category: significant; Status comments: Reserves were esrtimated by using surface areas determined by planimeter, 0.29 cubic m per long ton, and a depth to width ratio of 2:1 up to a maximum of 488 m (1600 ft). |
Geologic province: |
Canadian Shield |
Geologic subprovince: |
Rae craton |
Commodities: |
Fe |
Mineralization styles: |
stratiform (wall rock); layered/banded (mineralization zone); stratiform (mineralization zone) |
Geological ages: |
Archean (mineralization) Archean (host rocks) |
Host rocks: |
(1) sedimentary; iron formation; Depositional setting: shallow marine; Metamorphic grade: amphibolite - lowerExternal host rock forms: | tabular sedimentary body | Internal host rock structures: | massive |
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Country rocks: |
(1) banded iron formation; Metamorphic grade: amphiboliteCountry rock protoliths: | Iron Formation |
(2) granite; Metamorphic grade: unknownIndividual lithologies: | granitoid |
(3) quartzite; Metamorphic grade: amphiboliteCountry rock protoliths: | sandstone | Individual lithologies: | quartzite |
(4) metavolcanics; Metamorphic grade: amphibolite - lowerCountry rock protoliths: | mafic-ultramafic suite | Individual lithologies: | schist (quartz-biotite) schist (garnet-biotite) |
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Metallogenic signatures: |
Fe |
Mineralogy: |
(mineralization - massive / mineralization zone): magnetite, hematite, quartz |
Qualified comments: |
(Applies to: reserve/resource descriptions) Combined estimated historical tonnage of Eastern Melville Peninsula iron deposits is 1,139 million long tons.
(Applies to: reserve/resource assays) By old estimates, the eastern deposits grade 23 to 34 % soluble Fe and 20 to 33 % magnetic Fe. |
References: |
Anonymous Editor(s)), 1980 |
Non-hydrocarbon Mineral Resource Potential of Part of Northern Canada |
Open File, Geological Survey of Canada, Geological Survey of Canada, 716, 376 p., 2 maps. |
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. |
Palmer, P., 2007 |
Technical Report on Roche Bay Magnetite Project for Advanced Explorations Inc., February 14, 2007 |
SEDAR, February 14, 2007, Internet |
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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Associated deposit(s): |
Area 'E' (20039), Roche Bay - Zone A (20045), Roche Bay - Zone B (20046), Roche Bay - Zone C (20047), Roche Bay - Zone D (20048) |