CANADIAN AND WORLD MINERAL DEPOSIT DATABASES
Geological Survey of Canada


 
Database name: Canadian Iron Formation
Custodial agency: Geological Survey of Canada
Compilers: G. A. Gross and E. M. Hillary
Release date: 2014-08-21
   
Deposit name(s): Mary River - No. 3a (occurrence)
Longitude / Latitude: -79.08107 / 71.31883
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: On the basis of 10 trench samples, an open pittable tonnage to a depth of 350 ft was estimated to be 3 million tons of 68.70 % 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 rocks)
Host rocks: (1) sedimentary; iron formation; Metamorphic grade: amphibolite - lower; Component: mineralization zone
External host rock forms:tabular sedimentary body
Internal host rock structures:massive
granular
Host rock stratigraphy:Mary River group
Mineralogy: (mineralization - massive / mineralization zone): magnetite, specularite
Qualified comments: (Applies to: location and access) Located 1 mile E-NE of No. 3 deposit at an elevation of 1800 feet above sea level.

(Applies to: mineralization) The deposit outcrops in an area 600 x 75 feet as a part of 2 mile magnetic belt westward to Deposit No. 3 and extending for at least 1 mile further east, whereby increasing the possibility of additional reserves to be tested by drilling. The mineralization consists of granular magnetite and hematite.

(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.
Links to other databases: NUMIN; Key value: 037GSW0009
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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