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): |
Mary River - No. 2 (occurrence) |
Longitude / Latitude: |
-79.13273 / 71.32254 |
Political location(s): |
Canada; Province or state: Nunavut; Subprovince or locality: North Baffin Island |
NTS map data: |
037G05 |
Deposit clan (type): |
iron formation |
Deposit (sub) types: |
Algoma type; Reference: Watts Griffis and McOuat Ltd., 1983: A Summary Report on the Mary River Deposit of Baffinland Iron Mines Ltd. (062161); Mineral Assessment Report, Baffinland Iron Mines Ltd., Indian and Northern Affairs Canada, Publication code 062161 |
Deposit status: |
advanced project; Size category: significant; Status comments: Estimated 7 million tons to a depth of 350 ft based on geological data and 22 trench samples with 68.03 % total Fe. |
Geologic province: |
Canadian Shield |
Geologic subprovince: |
Rae craton |
Geologic district: |
Committee belt |
Deposit object located: |
centre of mineralized zone |
Commodities: |
Fe |
Geological ages: |
Archean (mineralization) Archean (host rocks) |
Host rocks: |
(1) sedimentary; iron formation; Metamorphic grade: amphibolite - lower; Component: mineralization zoneExternal host rock forms: | tabular sedimentary body | Internal host rock structures: | massive fine grained | Individual lithologies: | iron formation - oxide | Host rock stratigraphy: | Mary River group |
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Metallogenic signatures: |
Fe |
Mineralogy: |
(mineralization - massive / mineralization zone): hematite, specularite |
Deposit shape: |
tabular; Component: mineralization zoneDeposit dimensions: | length: 2,000 ft width: 130 ft |
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Qualified comments: |
(Applies to: location and access) Located 1.5 miles east of the No. 1 deposit at an elevation of 2,150 feet above sea level, Deposit 2 forms a 2,000 foot long ridge surrounded by glacial drift.
(Applies to: mineralization) The ore body forms a 2000 foot long ridge and the inferred width varies 20 to 230 feet, though the maximum continuous width is 130 feet. The orebody strikes E-W and dips steeply to the south. It consists exclusively of dense, fine granular to platy specular hematite.
(Applies to: reserve/resource descriptions) Estimated 7 million tons to a depth of 350 feet based on geological data and 22 trench samples with 68.03 % total Fe (1966). Both the outcrop and the magnetic anomaly data suggest a possible strike extension beyond the present high grade ore dimensions. |
Links to other databases: |
NUMIN; Key value: 037GSW0007 |
Geophysical-chemical signature: |
Signature type: Airborne Magnetometer; Response type: positive (very strong) Signature type: Ground Magnetometer; Response type: positive (very strong) |
References: |
Gross, G. A., 1966 |
The origin of high grade iron deposits on Baffin Island, N.W.T. |
Canadian Mining Journal, Volume 87, p. 111 - 114 |
Hahn, J., 1966 |
Feasibility Study and Cost Estimate, Baffinland Iron Mines Limited, Mary River Area, Franklin (062243) |
Mineral Assessment Report, Baffinland Iron Mines Limited, Indian and Northern Affairs Canada, Publication code 062243 |
Neczkar, E.; Westervelt, R. D., 1963 |
Engineering Field Report No 1 on Mary River Iron Deposits (017056) |
Mineral Assessment Report, Baffinland Iron Mines Ltd, Indian and Northern Affairs Canada, Publication code 017056 |
Sangster, D. F., 1998 |
Mineral deposits compilation and metallogenic domains, northern Baffin Island and northern Melville Peninsula, Northwest Territories |
Geological Survey of Canada, Open File 3635, Scale 1:1000000 |
Watts Griffis and McOuat Ltd., 1983 |
A Summary Report on the Mary River Deposit of Baffinland Iron Mines Ltd. (062161) |
Mineral Assessment Report, Baffinland Iron Mines Ltd., Indian and Northern Affairs Canada, Publication code 062161 |
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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: 2011-01-13; Component: Deposits 2 & 3; 26 million metric tons ore; Combined with production?: no; Provisional entry?: no; Resource category: indicated resourceGrade-commodity information: | Fe: 65 percent | Cutoff grade-commodity: | Fe: 60.5 percent | Reference: Saul, B.; Notopol, C.; Foster, D.; Watters, G.; Zhang, G.; Ghaffari, H.; Kondratas, H.; Stoyko, H. W.; Stratton, J.; Tamburini, J. R.; Jansons, K.; Bodi, L.; Palmer, P.; Guedez, P.; Broad, P.; Bridson, P.; Tinnevely, R.; Dejan, V.; Habibova, Z., 2012: Feasibility study on the Roche Bay Iron Ore Project; NI 43-101 Technical Report, Terra Tech Wardrop, Advanced Explorations Inc., Publication code 2012-08-10, 509 p. Percent weights allocated to deposit: 50.0%
Estimate date: 2011-01-13; 336 million metric tons ore; Combined with production?: no; Provisional entry?: no; Resource category: inferred resourceGrade-commodity information: | Fe: 65.9 percent | Cutoff grade-commodity: | Fe: 60.5 percent | Reference: Saul, B.; Notopol, C.; Foster, D.; Watters, G.; Zhang, G.; Ghaffari, H.; Kondratas, H.; Stoyko, H. W.; Stratton, J.; Tamburini, J. R.; Jansons, K.; Bodi, L.; Palmer, P.; Guedez, P.; Broad, P.; Bridson, P.; Tinnevely, R.; Dejan, V.; Habibova, Z., 2012: Feasibility study on the Roche Bay Iron Ore Project; NI 43-101 Technical Report, Terra Tech Wardrop, Advanced Explorations Inc., Publication code 2012-08-10, 509 p. Percent weights allocated to deposit: 50.0% |