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 D (project); East Melville Iron Deposits (occurrence)
Longitude / Latitude: -82.97744 / 68.36985
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: Anonymous: (123014)
Deposit status: advanced project; Size category: significant; Status comments: Preliminary resource estimates based on geological considerations and aero-mag surveys indicated 160 million long tons of 24.9% magnetic Fe and 27% soluble Fe (Ref Id 2688).
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
Related igneous rocks: (1) intrusive; granite suite; Component: mineralization zone
Individual lithologies:granite
Metallogenic signatures: Fe
Mineralogy: (mineralization): quartz
(mineralization - massive / mineralization zone): magnetite
Deposit shape: tabular; Component: mineralization zone
Deposit dimensions:length: 1,525 metres
width: 125 metres
Qualified comments: (Applies to: location ) The location for Area D was taken from AR 019503 Figure 5 (also see detailed insert).

(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). - Deposit D is a vertically inclined slab 1,524 m long, with an average thickness of 122 m (historical estimate).

(Applies to: reserve/resource assays) Preliminary reserve estimates based on geological considerations and aero-mag surveys indicated 160 million long tons (Ref Id 2688).
Links to other databases: NUMIN; Key value: 047ASW0009
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; Collector: Scruggs
Commodities and grades in order of importance:Fe (magnetic): 24.9 percent
Fe (soluble): 27 percent
Reference number: 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
References:
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.

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

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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