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): Roche Bay - Zone A (occurrence); East Melville Iron Deposits (occurrence)
Longitude / Latitude: -82.71885 / 68.47155
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: 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
Deposit status: advanced project; Size category: significant; Status comments: Preliminary resources estimated to be 158 million long tons of 26.5% magnetic Fe (Ref ID 2674), based on geological considerations and aero-mag surveys.
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 zone
External host rock forms:tabular sedimentary body
Internal host rock structures:massive
Individual lithologies:iron formation - oxide
Host rock stratigraphy:Prince Albert group
Metallogenic signatures: Fe
Mineralogy: (mineralization): quartz, pyrrhotite, pyrite
(mineralization - massive / mineralization zone): magnetite
Deposit shape: tabular; Component: mineralization zone
Deposit dimensions:length: 1,311 metres
width: 122 metres
Qualified comments: (Applies to: location and access) The location for Area A was taken from the map by Ford,1982 (Figure 7-3) in the Technical Report of the Roche Bay Magnetite Project (Advanced Explorations, 2007). Normin showing 047ASW0004, 1460 m to the west, may be the same occurrence? May be the Normin showing 047ASW0001, which plots 4835 m northeast is this one??

(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). - The "A" or Adler Deposit is a roughly rectangular slab 1,341 m long, with an average thickness of 133 m (historical estimate) or 2,300m by 160m (2006 estimate based on aeromagnetic survey). - A drill program in 1982 tested the A and B Zones. In 2008, two holes were drilled on the A and B Zones. - Sulphide mineralization (percentages unknown) has been reported in some areas of the BIF (core and outcrops) and is dominated by py-po with traces of cpy-asp. Additionally, the presence of trace amounts of gold and silver have also been identified. Testing of samples in 1984 identified detectable gold values in layers which were poor in magnetite and rich in sulphides and iron-bearing silicates. Gold values ranged from trace to 0.17 oz/ton for 36 of the 84 samples, and nil for the rest (most of the assays are at the lower end of this range). Silver returned trace values. (See gold showings coded for Hole 82-3 and Hole 82-13).

(Applies to: reserve/resource assays) Preliminary reserve estimates based on geological considerations and aero-mag surveys indicated 158 million long tons of 26.5% magnetic Fe (Ref Id 2674).

(Applies to: rock analysis and sample assays) Samples from test pits and 69 m long channel samples assayed 27.4 % magnetic Fe, 29.3 % soluble Fe. Underhill (1969) collected 2 ton bulk sample which gave an average assay 30.5 % magnetic Fe (Ref ID # 2674).
Links to other databases: NUMIN; Key value: 047ASW0001
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; Sample description: test pit + 69 m channel sample average; Collector: Anonymous
Commodities and grades in order of importance:Fe (magnetic): 27.4 percent
Fe (soluble): 30 percent
Reference number: 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
(2) Sample type: bulk; Sample weight: 2 million long tons; Collector: Underhill
Commodities and grades in order of importance:Fe (magnetic): 30.5 percent
Reference number: 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
References:
Anonymous
Advanced Explorations Inc. website
Internet

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

Ashley, R.; Nikhanj, J.; Melnbardis, J., 1985
Beneficiation Testing on Iron Concentrate, Borealis Explorations Ltd, Roche Bay Area (062194)
Mineral Assessment Report, Borealis Exploration Ltd; Ashley R, Nikhanj J, Melnbardis J (Ont. Research Foundation) (operator), Indian and Northern Affairs Canada, Publication code 062194

Ashley, R.; Nikhanj, J., 1985
Report on Diamond Drilling, Borealis Explorations Ltd, Roche Bay Area (062193)
Mineral Assessment Report, Borealis Exploration Ltd, Indian and Northern Affairs Canada, Publication code 062193

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.

Greenough, G.; Palmer, P., 2012
Roche Bay Iron Project A/B Zone and C-Zone, Nunavut, Canada
NI 43-101 Technical Report, Golder Associates Ltd., Advanced Explorations Inc., Publication code 2012-03-02, 165 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

Palmer, P., 2007
Technical Report on Roche Bay Magnetite Project for Advanced Explorations Inc., February 14, 2007
SEDAR, February 14, 2007, Internet

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.

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., 1969
Report for Borealis Exploration Limited on Mineral Exploration on Permits 47B2 and 47A5 and 6, Melville Peninsula A (019503)
Mineral Assessment Report, Borealis Exploration Ltd, Indian and Northern Affairs Canada, Publication code 019503

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

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: 2012-03-02; Component: A/B Zones; 92.219 million metric tons ore; Combined with production?: no; Provisional entry?: no; Resource category: inferred resource
Grade-commodity information:Fe: 24.64 percent
Cutoff grade-commodity:Fe: 20 percent
Reference: Greenough, G.; Palmer, P., 2012: Roche Bay Iron Project A/B Zone and C-Zone, Nunavut, Canada; NI 43-101 Technical Report, Golder Associates Ltd., Advanced Explorations Inc., Publication code 2012-03-02, 165 p.
Percent weights allocated to deposit: 50.0%

Generated 2014-09-03 13:02:15 with GQuery -- 3.7 ADO (3.19..3.22 -- 2008-12-16)
GlobalDB System, Geological Survey of Canada, Natural Resources Canada