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. 3 (occurrence) |
Longitude / Latitude: |
-79.12866 / 71.31684 |
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: This deposit contains a potential open pittable reserve of 5 million tons to an assumed depth of 350 ft on the basis of 9 trench samples. The average Fe contaent is 68.13 % 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 (host metamorphism) |
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 foliated | Individual lithologies: | iron formation - oxide | Host rock stratigraphy: | Mary River group |
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Metallogenic signatures: |
Fe |
Mineralogy: |
(mineralization / mineralization zone): specularite, hematite |
Deposit shape: |
tabular; Component: mineralization zoneDeposit dimensions: | long axis: 350 ft short axis: 300 ft |
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Qualified comments: |
(Applies to: location and access) Located 1,700 ft above sea level and 2,200 feet south of Deposit 2 on the northern slope of the Mary River valley.
(Applies to: mineralization) The deposit outcrops in an triangular area of 300 x 350 feet on about 30 degrees slope and consists of big blocks of high grade talus of finely granular and slightly friable specular hematite, which grades locally into foliated and micaceous coarse specularite. The magnetite content of this deposit is negligible. The orebody strikes E-W and dips steeply to the north. This deposit lies on the western extremity of a major structure of iron formation extending to and beyond deposit 3a.
(Applies to: reserve/resource descriptions) On the basis of 10 trench samples an open pittable tonnage to a depth of 350 feet was estimated to be 3 million tons of 68.70 % Fe (1966). The coincident magnetic anomaly extends for more than 1000 feet to the east, which increases the possibility of finding additional ore reserves. |
Links to other databases: |
NUMIN; Key value: 037GSW0008 |
Geophysical-chemical signature: |
Signature type: Airborne Magnetometer; Response type: positive (very strong) Signature type: Ground Magnetometer; Response type: positive (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% |